1 hardware resources
Chuanglong Technology SOM-TLIMX8 is a high-end industrial-grade core board based on NXP i.MX 8M Mini quad-core ARM Cortex-A53 + single-core ARM Cortex-M4 heterogeneous multi-core processor design, ARM Cortex-A53 (64- bit) The main processing unit has a main frequency of up to 1.6GHz, and the ARM Cortex-M4 real-time processing unit has a main frequency of up to 400MHz. The processor adopts the latest 14nm technology, supports 1080P60 H.264 video hardware codec, 1080P60 H.265 video hardware decoding, and GPU graphics accelerator. The core board leads to interfaces such as MIPI-CSI, MIPI-DSI, Audio, PCIe, FlexSPI, USB, UART, Gigabit Ethernet port through stamp hole connection, and can communicate with FPGA at high speed through PCIe, FlexSPI, MIPI-CSI interface. The core board has been verified by professional PCB layout and high and low temperature tests. It is stable and reliable, and can meet various industrial application environments.
Figure 1 Core board hardware block diagram
figure 2
image 3
1.1 CPU
The CPU model of the core board is MIMX8MM6CVTKZAA, packaged in LFBGA, the working temperature is -40°C~105°C, the number of pins is 486, the size is 14mm*14mm, and the manufacturing process is 14nm.
NXP i.MX 8M Mini processor architecture is as follows:
Table 1
| NXP i.MX 8M Mini Quad |
4x ARM Cortex-A53(64-bit), main frequency 1.6GHz, support floating point operation function |
| ARM Cortex-M4, dedicated real-time processing unit, main frequency 400MHz |
|
| 1080P60 H.264 Encoder |
|
| 1080P60 H.264 Decoder |
|
| 1080P60 H.265 Decoder |
|
| GPU: GC320 2D, GCNanoUltra 3D graphics accelerator, support OpenGL ES 1.1/2.0, OpenVG 1.1 |
Figure 4 Functional block diagram of NXP i.MX 8M Mini processor
1.2 ROM
The core board is connected to the eMMC through the MMC1 bus, using an 8bit data line. The eMMC model is compatible with Micron’s MTFC8GAKAJCN-4M IT (8GByte), SAMSUNG’s KLM8G1GEUF-B04% (8GByte), and SkyHigh Memory’s S40FC004 (4GByte).
1.3 RAM
The core board is connected to 2 pieces of DDR4 through a dedicated DRAM bus, each using a 16-bit data line, a total of 32 bits. The DDR4 model is compatible with Micron’s MT40A512M16LY-062E IT (1GByte), SK Hynix Inc’s H5AN8G6NCJR-VKI (1GByte) and H5AN4G6NBJR-VKI (512MByte), and UniIC’s SCB12Q4G160AF-07QI (512MByte), support DDR4-2400 working mode (1200MHz).
1.4 crystal oscillator
The core board uses two industrial-grade crystal oscillators Y1 and Y2, of which the clock frequency of Y1 is 24MHz and the accuracy is ±20ppm, which provides the system clock source for the CPU; the clock frequency of Y2 is 32.768KHz, and the accuracy is ±20ppm, which provides the clock source for the internal RTC of the CPU .
1.5 power supply
The core board adopts a dedicated industrial-grade PMIC power management chip, which meets the power supply requirements of the system and the timing requirements of CPU power-on and power-off, and uses 5V DC power supply for power supply.
1.6 LED
There are three LEDs on the core board. Among them, LED0 is the power indicator light, which will be on by default after the system is powered on. LED1 and LED2 are user-programmable indicator lights, which correspond to GPIO1[0] and GPIO1[1] pins respectively, and light up at high level.
Figure 5
Figure 6
1.7 Peripheral resources
The main peripheral resources and performance parameters derived from the core board are shown in the table below.
Table 2
| Peripheral resources |
quantity |
performance parameters |
| Camera |
1 |
MIPI-CSI(Camera Serial Interface)，4-lane； Each lane supports a maximum transmission rate of 1.5Gbps; |
| Display |
1 |
MIPI-DSI(Display Serial Interface)，4-lane； Each lane supports a maximum transmission rate of 1.5Gbps; |
| UART |
4 |
The highest supported baud rate is 4Mbps; Support hardware or software flow control; |
| SAI |
5 |
Supports full-duplex serial interfaces with frame synchronization, such as I2S, AC97, TDM; |
| ECSPI |
3 |
Full-duplex enhanced synchronous serial interface; Supports up to 52Mb/s data rate; |
| FlexSPI |
1 |
Support single pad/dual pad/quad pad operation mode; Support DMA; |
| 2C |
4 |
Supports up to 400Kb/s communication rate; |
| Ethernet |
1 |
Adopt RGMII interface; Support 10/100/1000M network port configuration; Support network self-adaptation; |
| PCIe |
1 |
Support single-lane Gen2 standard port; Support RC or EP mode; The highest communication rate is 5Gbps; |
| USB 2.0 |
2 |
Support OTG mode; Support High-Speed/Full-Speed/Low-Speed mode; |
| MMC/SD/SDIO |
2 |
MMC1, MMC3 support SD3.0/SDIO3.0/MMC5.1 specification, support 1, 4, 8-bit MMC mode; MMC2 supports SD3.0/SDIO3.0, supports 1, 4 bit MMC mode; Support up to 200MHz clock; Remarks: The eMMC device on the core board has used MMC1, and it has not been led to the stamp hole; |
| PDM |
1 |
Maximum support for 4 lines and 8 channels; |
| PWM |
4 |
With 16-bit time base counter; Support up to 66MHz working frequency; |
| Watchdog |
3 |
watchdog timer; The support time setting range is 0.5 ~ 128s; The time resolution is 0.5s; |
| S/PDIF |
1 |
Digital audio transmission interface; Support sending and receiving function, standard audio file transmission format; |
| JTAG |
1 |
Support boundary scan; Support IEEE 1149.1 and IEEE 1149.6; |
| Temperature Sensor |
1 |
Support the sensing temperature range of 10 ~ 105 degrees Celsius; Sensing resolution is 1 degree Celsius; |
Some peripheral resources have pin multiplexing. During the actual development process, you can use the Config Tools for i.MX tool in the "4-Software Documentation\Tools\Windows\" directory of the product documentation to reasonably allocate peripheral resources. Official reference link of Config Tools for i.MX tools: www.nxp.com/design/designs/config-tools-for-i-mx-applications-processors:CONFIG-TOOLS-IMX .
2 引脚说明
2.1 引脚排列
核心板邮票孔引脚采用2x 40pin + 2x 60pin，共200pin规格，引脚排列如下图所示。
图 7 核心板引脚排列示意图
2.2 引脚定义
核心板引脚定义如下表。
其中“邮票孔引脚号”为核心板邮票孔引脚序列号，“芯片引脚号”为CPU引脚序列号，“引脚信号名称”为CPU引脚信号名称，“引脚功能”为核心板引脚推荐功能描述。
引脚信号名称中，如包含“PU”、“PD”和“Z”，则分别指该引脚在核心板内部已进行上拉、已进行下拉、已串联电阻。请勿改变“PU”、“PD”引脚的上下拉状态，否则将可能导致核心板部分功能异常。
2.2.1 CON1A
表 3
| 邮票孔引脚号 |
芯片引脚号 |
引脚信号名称 |
引脚功能 |
参考电平 |
| 1 |
AD10 |
AD10/GPIO1_10/USB1_OTG_ID |
GPIO |
1.8V |
| 2 |
AD13 |
AD13/SAI5_RX_DATA2/SAI1_TX_DATA4/SAI1_TX_SYNC/SAI5_TX_BCLK/PDM_BIT_STREAM2/GPIO3_23 |
PDM |
3.3V |
| 3 |
AC13 |
AC13/SAI5_RX_DATA3/SAI1_TX_DATA5/SAI1_TX_SYNC/SAI5_TX_DATA0/PDM_BIT_STREAM3/GPIO3_24 |
PDM |
3.3V |
| 4 |
AC14 |
AC14/SAI5_RX_DATA1/SAI1_TX_DATA3/SAI1_TX_SYNC/SAI5_TX_SYNC/PDM_BIT_STREAM1/GPIO3_22 |
PDM |
3.3V |
| 5 |
AB15 |
AB15/SAI5_RX_SYNC/SAI1_TX_DATA0/GPIO3_19 |
GPIO |
3.3V |
| 6 |
AC15 |
AC15/SAI5_RX_BCLK/SAI1_TX_DATA1/PDM_CLK/GPIO3_20 |
PDM |
3.3V |
| 7 |
AD15 |
AD15/SAI5_MCLK/SAI1_TX_BCLK/GPIO3_25 |
GPIO |
3.3V |
| 8 |
AD18 |
AD18/SAI5_RX_DATA0/SAI1_TX_DATA2/PDM_BIT_STREAM0/GPIO3_21 |
PDM |
3.3V |
| 9 |
AF8 |
AF8/SPDIF1_EXT_CLK/PWM1_OUT/GPIO5_5 |
PWM |
3.3V |
| 10 |
AG9 |
AG9/SPDIF1_IN/PWM2_OUT/GPIO5_4 |
GPIO |
3.3V |
| 11 |
AF9 |
AF9/SPDIF1_OUT/PWM3_OUT/GPIO5_3 |
GPIO |
3.3V |
| 12 |
- |
GND |
GND |
GND |
| 13 |
AF16 |
AF16/SAI1_RX_BCLK/SAI5_RX_BCLK/CORESIGHT_TRACE_CTL/GPIO4_1 |
GPIO |
3.3V |
| 14 |
AG16 |
AG16/SAI1_RX_SYNC/SAI5_RX_SYNC/CORESIGHT_TRACE_CLK/GPIO4_0 |
GPIO |
3.3V |
| 15 |
AG15 |
AG15/SAI1_RX_DATA0/SAI5_RX_DATA0/SAI1_TX_DATA1/PDM_BIT_STREAM0/CORESIGHT_TRACE0/GPIO4_2/BOOT_CFG0 |
BOOT_CFG /GPIO |
3.3V |
| 16 |
AF15 |
AF15/SAI1_RX_DATA1/SAI5_RX_DATA1/PDM_BIT_STREAM1/CORESIGHT_TRACE1/GPIO4_3/BOOT_CFG1 |
BOOT_CFG /GPIO |
3.3V |
| 17 |
AG17 |
AG17/SAI1_RX_DATA2/SAI5_RX_DATA2/PDM_BIT_STREAM2/CORESIGHT_TRACE2/GPIO4_4/BOOT_CFG2 |
BOOT_CFG /GPIO |
3.3V |
| 18 |
AF17 |
AF17/SAI1_RX_DATA3/SAI5_RX_DATA3/PDM_BIT_STREAM3/CORESIGHT_TRACE3/GPIO4_5/BOOT_CFG3 |
BOOT_CFG /GPIO |
3.3V |
| 19 |
AG18 |
AG18/SAI1_RX_DATA4/SAI6_TX_BCLK/SAI6_RX_BCLK/CORESIGHT_TRACE4/GPIO4_6/BOOT_CFG4 |
BOOT_CFG /GPIO |
3.3V |
| 20 |
AF18 |
AF18/SAI1_RX_DATA5/SAI6_TX_DATA0/SAI6_RX_DATA0/SAI1_RX_SYNC/CORESIGHT_TRACE5/GPIO4_7/BOOT_CFG5 |
BOOT_CFG /GPIO |
3.3V |
| 21 |
AG19 |
AG19/SAI1_RX_DATA6/SAI6_TX_SYNC/SAI6_RX_SYNC/CORESIGHT_TRACE6/GPIO4_8/BOOT_CFG6 |
BOOT_CFG /GPIO |
3.3V |
| 22 |
AF19 |
AF19/SAI1_RX_DATA7/SAI6_MCLK/SAI1_TX_SYNC/SAI1_TX_DATA4/CORESIGHT_TRACE7/GPIO4_9/BOOT_CFG7 |
BOOT_CFG /GPIO |
3.3V |
| 23 |
AB18 |
AB18/SAI1_MCLK/SAI5_MCLK/SAI1_TX_BCLK/PDM_CLK/GPIO4_20 |
GPIO |
3.3V |
| 24 |
AC18 |
AC18/SAI1_TX_BCLK/SAI5_TX_BCLK/CORESIGHT_EVENTI/GPIO4_11 |
GPIO |
3.3V |
| 25 |
AB19 |
AB19/SAI1_TX_SYNC/SAI5_TX_SYNC/CORESIGHT_EVENTO/GPIO4_10 |
GPIO |
3.3V |
| 26 |
AG20 |
AG20/SAI1_TX_DATA0/SAI5_TX_DATA0/CORESIGHT_TRACE8/GPIO4_12/BOOT_CFG8 |
BOOT_CFG /GPIO |
3.3V |
| 27 |
AF20 |
AF20/SAI1_TX_DATA1/SAI5_TX_DATA1/CORESIGHT_TRACE9/GPIO4_13/BOOT_CFG9 |
BOOT_CFG /GPIO |
3.3V |
| 28 |
AG21 |
AG21/SAI1_TX_DATA2/SAI5_TX_DATA2/CORESIGHT_TRACE10/GPIO4_14/BOOT_CFG10 |
BOOT_CFG /GPIO |
3.3V |
| 29 |
AF21 |
AF21/SAI1_TX_DATA3/SAI5_TX_DATA3/CORESIGHT_TRACE11/GPIO4_15/BOOT_CFG11 |
BOOT_CFG /GPIO |
3.3V |
| 30 |
AG22 |
AG22/SAI1_TX_DATA4/SAI6_RX_BCLK/SAI6_TX_BCLK/CORESIGHT_TRACE12/GPIO4_16/BOOT_CFG12 |
BOOT_CFG /GPIO |
3.3V |
| 31 |
AF22 |
AF22/SAI1_TX_DATA5/SAI6_RX_DATA0/SAI6_TX_DATA/0CORESIGHT_TRACE13/GPIO4_17/BOOT_CFG13 |
BOOT_CFG /GPIO |
3.3V |
| 32 |
AG23 |
AG23/SAI1_TX_DATA6/SAI6_RX_SYNC/SAI6_TX_SYNC/CORESIGHT_TRACE14/GPIO4_18/BOOT_CFG14 |
BOOT_CFG /GPIO |
3.3V |
| 33 |
AF23 |
AF23/SAI1_TX_DATA7/SAI6_MCLK/PDM_CLK/CORESIGHT_TRACE15/GPIO4_19/BOOT_CFG15 |
BOOT_CFG /GPIO |
3.3V |
| 34 |
G26 |
G26/BOOT_MODE0 |
BOOT_MODE |
1.8V |
| 35 |
G27 |
G27/BOOT_MODE1 |
BOOT_MODE |
1.8V |
| 36 |
D26 |
D26/TEST_MODE/PD/Z |
BOOT_MODE |
1.8V |
| 37 |
C27 |
C27/JTAG_TRST_B |
BOOT_MODE |
1.8V |
| 38 |
- |
GND |
GND |
GND |
| 39 |
AD19 |
AD19/SAI2_MCLK/SAI5_MCLK/GPIO4_27 |
GPIO |
3.3V |
| 40 |
AD22 |
AD22/SAI2_TX_BCLK/SAI5_TX_DATA2/GPIO4_25 |
GPIO |
3.3V |
| 41 |
AC22 |
AC22/SAI2_TX_DATA0/SAI5_TX_DATA3/GPIO4_26 |
GPIO |
3.3V |
| 42 |
AD23 |
AD23/SAI2_TX_SYNC/SAI5_TX_DATA1/SAI2_TX_DATA1/UART1_CTS_B/GPIO4_24 |
GPIO |
3.3V |
| 43 |
AC24 |
AC24/SAI2_RX_DATA0/SAI5_TX_DATA0/UART1_RTS_B/GPIO4_23 |
GPIO |
3.3V |
| 44 |
AC19 |
AC19/SAI2_RX_SYNC/SAI5_TX_SYNC/SAI5_TX_DATA1/SAI2_RX_DATA1/UART1_TX/GPIO4_21 |
GPIO |
3.3V |
| 45 |
AB22 |
AB22/SAI2_RX_BCLK/SAI5_TX_BCLK/UART1_RX/GPIO4_22 |
GPIO |
3.3V |
| 46 |
- |
GND |
GND |
GND |
| 47 |
AF24 |
AF24/ENET1_RGMII_TX_CTL/GPIO1_22 |
RGMII |
1.8/2.5V |
| 48 |
AG24 |
AG24/ENET1_RGMII_TXC/ENET1_TX_ER/GPIO1_23 |
RGMII |
1.8/2.5V |
| 49 |
AG26 |
AG26/ENET1_RGMII_TD0/GPIO1_21 |
RGMII |
1.8/2.5V |
| 50 |
AF26 |
AF26/ENET1_RGMII_TD1/GPIO1_20 |
RGMII |
1.8/2.5V |
| 51 |
AG25 |
AG25/ENET1_RGMII_TD2/ENET1_TX_CLK/ENET_REF_CLK_ROOT/GPIO1_19 |
RGMII |
1.8/2.5V |
| 52 |
AF25 |
AF25/ENET1_RGMII_TD3/GPIO1_18 |
RGMII |
1.8/2.5V |
| 53 |
AF27 |
AF27/ENET1_RGMII_RX_CTL/GPIO1_24 |
RGMII |
1.8/2.5V |
| 54 |
AE26 |
AE26/ENET1_RGMII_RXC/ENET1_RX_ER/GPIO1_25 |
RGMII |
1.8/2.5V |
| 55 |
AE27 |
AE27/ENET1_RGMII_RD0/GPIO1_26 |
RGMII |
1.8/2.5V |
| 56 |
AD27 |
AD27/ENET1_RGMII_RD1/GPIO1_27 |
RGMII |
1.8/2.5V |
| 57 |
AD26 |
AD26/ENET1_RGMII_RD2/GPIO1_28 |
RGMII |
1.8/2.5V |
| 58 |
AC26 |
AC26/ENET1_RGMII_RD3/GPIO1_29 |
RGMII |
1.8/2.5V |
| 59 |
AC27 |
AC27/ENET1_MDC/GPIO1_16 |
MDIO |
1.8/2.5V |
| 60 |
AB27 |
AB27/ENET1_MDIO/GPIO1_17 |
MDIO |
1.8/2.5V |
2.2.2 CON1B
表 4
| 邮票孔引脚号 |
芯片引脚号 |
引脚信号名称 |
引脚功能 |
参考电平 |
| 61 |
- |
GND |
GND |
GND |
| 62 |
- |
VDD_5V_SOM |
5V Power Input |
5V |
| 63 |
- |
VDD_5V_SOM |
5V Power Input |
5V |
| 64 |
- |
VDD_5V_SOM |
5V Power Input |
5V |
| 65 |
- |
VDD_5V_SOM |
5V Power Input |
5V |
| 66 |
- |
GND |
GND |
GND |
| 67 |
- |
GND |
GND |
GND |
| 68 |
- |
VDD_ENET_ADJ |
2.5V/1.8V Power Input |
1.8V/2.5V |
| 69 |
- |
VDD_3V3_SWOUT |
3.3V Power Output |
3.3V |
| 70 |
- |
VDD_3V3_SOM |
3.3V Power Output |
3.3V |
| 71 |
- |
VDD_1V8_SOM |
1.8V Power Output |
1.8V |
| 72 |
- |
GND |
GND |
GND |
| 73 |
A25 |
A25/ONOFF/PU |
ON/OFF |
1.8V |
| 74 |
- |
PMIC_KEY_RSTn/PU |
Reset Input |
1.8V |
| 75 |
B24 |
B24/POR_B/PU |
Reset Output |
1.8V |
| 76 |
- |
GND |
GND |
GND |
| 77 |
- |
GND |
GND |
GND |
| 78 |
AA27 |
AA27/USDHC2_WP/GPIO2_20 |
GPIO |
1.8V/3.3V |
| 79 |
AA26 |
AA26/USDHC2_CD_B/GPIO2_12 |
MMC2 |
1.8V/3.3V |
| 80 |
AB24 |
AB24/USDHC2_DATA1/GPIO2_16 |
MMC2 |
1.8V/3.3V |
| 81 |
AB23 |
AB23/USDHC2_DATA0/GPIO2_15 |
MMC2 |
1.8V/3.3V |
| 82 |
W23 |
W23/USDHC2_CLK/GPIO2_13 |
MMC2 |
1.8V/3.3V |
| 83 |
W24 |
W24/USDHC2_CMD/GPIO2_14 |
MMC2 |
1.8V/3.3V |
| 84 |
V23 |
V23/USDHC2_DATA3/GPIO2_18/EARLY_RESET |
MMC2 |
1.8V/3.3V |
| 85 |
V24 |
V24/USDHC2_DATA2/GPIO2_17 |
MMC2 |
1.8V/3.3V |
| 86 |
R23 |
R23/USDHC1_RESET_B/GPIO2_10 |
GPIO |
1.8V |
| 87 |
R24 |
R24/USDHC1_STROBE/GPIO2_11 |
GPIO |
1.8V |
| 88 |
J27 |
J27/CLKIN2 |
CLOCK |
1.8V |
| 89 |
J26 |
J26/CLKOUT2 |
CLOCK |
1.8V |
| 90 |
H27 |
H27/CLKIN1 |
CLOCK |
1.8V |
| 91 |
H26 |
H26/CLKOUT1 |
CLOCK |
1.8V |
| 92 |
- |
GND |
GND |
GND |
| 93 |
R22 |
R22/RAWNAND_DQS/QSPI_A_DQS/GPIO3_14 |
GPIO |
1.8V |
| 94 |
R27 |
R27/RAWNAND_WP_B/USDHC3_CMD/GPIO3_18 |
GPIO |
1.8V |
| 95 |
R26 |
R26/RAWNAND_WE_B/USDHC3_CLK/GPIO3_17 |
GPIO |
1.8V |
| 96 |
P26 |
P26/RAWNAND_READY_B/USDHC3_RESET_B/GPIO3_16 |
GPIO |
1.8V |
| 97 |
P27 |
P27/RAWNAND_CE1_B/QSPI_A_SS1_B/USDHC3_STROBE/GPIO3_2 |
GPIO |
1.8V |
| 98 |
N24 |
N24/RAWNAND_CE0_B/QSPI_A_SS0_B/GPIO3_1 |
GPIO |
1.8V |
| 99 |
M27 |
M27/RAWNAND_CE2_B/QSPI_B_SS0_B/USDHC3_DATA5/GPIO3_3 |
GPIO |
1.8V |
| 100 |
N27 |
N27/RAWNAND_RE_B/QSPI_B_DQS/USDHC3_DATA4/GPIO3_15 |
GPIO |
1.8V |
2.2.3 CON1C
表 5
| 邮票孔引脚号 |
芯片引脚号 |
引脚信号名称 |
引脚功能 |
参考电平 |
| 101 |
N22 |
N22/RAWNAND_ALE/QSPI_A_SCLK/GPIO3_0 |
GPIO |
1.8V |
| 102 |
K27 |
K27/RAWNAND_CLE/QSPI_B_SCLK/USDHC3_DATA7/GPIO3_5 |
GPIO |
1.8V |
| 103 |
L27 |
L27/RAWNAND_CE3_B/QSPI_B_SS1_B/USDHC3_DATA6/GPIO3_4 |
GPIO |
1.8V |
| 104 |
N26 |
N26/RAWNAND_DATA07/QSPI_B_DATA3/USDHC3_DATA3/GPIO3_13 |
GPIO |
1.8V |
| 105 |
K26 |
K26/RAWNAND_DATA06/QSPI_B_DATA2/USDHC3_DATA2/GPIO3_12 |
GPIO |
1.8V |
| 106 |
L26 |
L26/RAWNAND_DATA05/QSPI_B_DATA1/USDHC3_DATA1/GPIO3_11 |
GPIO |
1.8V |
| 107 |
M26 |
M26/RAWNAND_DATA04/QSPI_B_DATA0/USDHC3_DATA0/GPIO3_10 |
GPIO |
1.8V |
| 108 |
N23 |
N23/RAWNAND_DATA03/QSPI_A_DATA3/USDHC3_WP/GPIO3_9 |
GPIO |
1.8V |
| 109 |
K23 |
K23/RAWNAND_DATA02/QSPI_A_DATA2/USDHC3_CD_B/GPIO3_8 |
GPIO |
1.8V |
| 110 |
K24 |
K24/RAWNAND_DATA01/QSPI_A_DATA1/GPIO3_7 |
GPIO |
1.8V |
| 111 |
P23 |
P23/RAWNAND_DATA00/QSPI_A_DATA0/GPIO3_6 |
GPIO |
1.8V |
| 112 |
- |
GND |
GND |
GND |
| 113 |
F23 |
F23/USB2_VBUS/Z |
USB2 |
3.3V |
| 114 |
B23 |
B23/USB2_DP |
USB2 |
- |
| 115 |
A23 |
A23/USB2_DN |
USB2 |
- |
| 116 |
- |
GND |
GND |
GND |
| 117 |
D23 |
D23/USB2_ID |
USB2 |
1.8V |
| 118 |
F22 |
F22/USB1_VBUS/Z |
USB1 |
3.3V |
| 119 |
B22 |
B22/USB1_DP |
USB1 |
- |
| 120 |
A22 |
A22/USB1_DN |
USB1 |
- |
| 121 |
- |
GND |
GND |
GND |
| 122 |
D22 |
D22/USB1_ID |
USB1 |
1.8V |
| 123 |
- |
GND |
GND |
GND |
| 124 |
B21 |
B21/PCIE_REF_PAD_CLK_P |
PCIe |
- |
| 125 |
A21 |
A21/PCIE_REF_PAD_CLK_N |
PCIe |
- |
| 126 |
- |
GND |
GND |
GND |
| 127 |
B20 |
B20/PCIE_TXN_P |
PCIe |
- |
| 128 |
A20 |
A20/PCIE_TXN_N |
PCIe |
- |
| 129 |
- |
GND |
GND |
GND |
| 130 |
B19 |
B19/PCIE_RXN_P |
PCIe |
- |
| 131 |
A19 |
A19/PCIE_RXN_N |
PCIe |
- |
| 132 |
- |
GND |
GND |
GND |
| 133 |
B18 |
B18/MIPI_CSI_D3_P |
MIPI_CSI |
- |
| 134 |
A18 |
A18/MIPI_CSI_D3_N |
MIPI_CSI |
- |
| 135 |
B17 |
B17/MIPI_CSI_D2_P |
MIPI_CSI |
- |
| 136 |
A17 |
A17/MIPI_CSI_D2_N |
MIPI_CSI |
- |
| 137 |
B16 |
B16/MIPI_CSI_CLK_P |
MIPI_CSI |
- |
| 138 |
A16 |
A16/MIPI_CSI_CLK_N |
MIPI_CSI |
- |
| 139 |
B15 |
B15/MIPI_CSI_D1_P |
MIPI_CSI |
- |
| 140 |
A15 |
A15/MIPI_CSI_D1_N |
MIPI_CSI |
- |
| 141 |
B14 |
B14/MIPI_CSI_D0_P |
MIPI_CSI |
- |
| 142 |
A14 |
A14/MIPI_CSI_D0_N |
MIPI_CSI |
- |
| 143 |
- |
GND |
GND |
GND |
| 144 |
B13 |
B13/MIPI_DSI_D3_P |
MIPI_DSI |
- |
| 145 |
A13 |
A13/MIPI_DSI_D3_N |
MIPI_DSI |
- |
| 146 |
B12 |
B12/MIPI_DSI_D2_P |
MIPI_DSI |
- |
| 147 |
A12 |
A12/MIPI_DSI_D2_N |
MIPI_DSI |
- |
| 148 |
B11 |
B11/MIPI_DSI_CLK_P |
MIPI_DSI |
- |
| 149 |
A11 |
A11/MIPI_DSI_CLK_N |
MIPI_DSI |
- |
| 150 |
B10 |
B10/MIPI_DSI_D1_P |
MIPI_DSI |
- |
| 151 |
A10 |
A10/MIPI_DSI_D1_N |
MIPI_DSI |
- |
| 152 |
B9 |
B9/MIPI_DSI_D0_P |
MIPI_DSI |
- |
| 153 |
A9 |
A9/MIPI_DSI_D0_N |
MIPI_DSI |
- |
| 154 |
- |
GND |
GND |
GND |
| 155 |
F19 |
F19/UART4_RX/UART2_CTS_B/PCIE1_CLKREQ_B/GPIO5_28 |
UART4 |
1.8V |
| 156 |
F18 |
F18/UART4_TX/UART2_RTS_B/GPIO5_29 |
UART4 |
1.8V |
| 157 |
E18 |
E18/UART3_RX/UART1_CTS_B/USDHC3_RESET_B/GPIO5_26 |
UART3 |
1.8V |
| 158 |
D18 |
D18/UART3_TX/UART1_RTS_B/USDHC3_VSELECT/GPIO5_27 |
UART3 |
1.8V |
| 159 |
F15 |
F15/UART2_RX/ECSPI3_MISO/GPIO5_24 |
UART2 |
1.8V |
| 160 |
E15 |
E15/UART2_TX/ECSPI3_SS0/GPIO5_25 |
UART2 |
1.8V |
2.2.4 CON1D
表 6
| 邮票孔引脚号 |
芯片引脚号 |
引脚信号名称 |
引脚功能 |
参考电平 |
| 161 |
E14 |
E14/UART1_RX/ECSPI3_SCLK/GPIO5_22 |
UART1 |
1.8V |
| 162 |
F13 |
F13/UART1_TX/ECSPI3_MOSI/GPIO5_23 |
UART1 |
1.8V |
| 163 |
E13 |
E13/I2C4_SDA/PWM1_OUT/GPIO5_21/PU |
I2C4 |
1.8V |
| 164 |
D13 |
D13/I2C4_SCL/PWM2_OUT/PCIE1_CLKREQ_B/GPIO5_20/PU |
I2C4 |
1.8V |
| 165 |
F10 |
F10/I2C3_SDA/PWM3_OUT/GPT3_CLK/GPIO5_19/PU |
I2C3 |
1.8V |
| 166 |
E10 |
E10/I2C3_SCL/PWM4_OUT/GPT2_CLK/GPIO5_18/PU |
I2C3 |
1.8V |
| 167 |
F9 |
F9/I2C1_SDA/ENET1_MDIO/GPIO5_15/PU |
I2C1 |
1.8V |
| 168 |
E9 |
E9/I2C1_SCL/ENET1_MDC/GPIO5_14/PU |
I2C1 |
1.8V |
| 169 |
D9 |
D9/I2C2_SDA/ENET1_EVENT1_OUT/USDHC3_WP/GPIO5_17/PU |
I2C2 |
1.8V |
| 170 |
D10 |
D10/I2C2_SCL/ENET1_EVENT1_IN/USDHC3_CD_B/GPIO5_16/PU |
I2C2 |
1.8V |
| 171 |
- |
GND |
GND |
GND |
| 172 |
D6 |
D6/ECSPI1_SCLK/UART3_RX/GPIO5_6 |
ECSPI1 |
3.3V |
| 173 |
A7 |
A7/ECSPI1_MISO/UART3_CTS_B/GPIO5_8 |
ECSPI1 |
3.3V |
| 174 |
B7 |
B7/ECSPI1_MOSI/UART3_TX/GPIO5_7 |
ECSPI1 |
3.3V |
| 175 |
B6 |
B6/ECSPI1_SS0/UART3_RTS_B/GPIO5_9 |
ECSPI1 |
3.3V |
| 176 |
E6 |
E6/ECSPI2_SCLK/UART4_RX/GPIO5_10 |
ECSPI2 |
3.3V |
| 177 |
A8 |
A8/ECSPI2_MISO/UART4_CTS_B/GPIO5_12 |
ECSPI2 |
3.3V |
| 178 |
B8 |
B8/ECSPI2_MOSI/UART4_TX/GPIO5_11 |
ECSPI2 |
3.3V |
| 179 |
A6 |
A6/ECSPI2_SS0/UART4_RTS_B/GPIO5_13 |
ECSPI2 |
3.3V |
| 180 |
AD6 |
AD6/SAI3_MCLK/PWM4_OUT/SAI5_MCLK/GPIO5_2 |
SAI3 |
3.3V |
| 181 |
AC6 |
AC6/SAI3_TX_SYNC/GPT1_CLK/SAI5_RX_DATA1/SAI3_TX_DATA1/UART2_RX/GPIO4_31 |
SAI3 |
3.3V |
| 182 |
AG6 |
AG6/SAI3_TX_BCLK/GPT1_COMPARE2/SAI5_RX_DATA2/UART2_TX/GPIO5_0 |
SAI3 |
3.3V |
| 183 |
AF6 |
AF6/SAI3_TX_DATA0/GPT1_COMPARE3/SAI5_RX_DATA3/GPIO5_1 |
SAI3 |
3.3V |
| 184 |
AG7 |
AG7/SAI3_RX_BCLK/GPT1_CAPTURE2/SAI5_RX_BCLK/UART2_CTS_B/GPIO4_29 |
GPIO |
3.3V |
| 185 |
AF7 |
AF7/SAI3_RX_DATA0/GPT1_COMPARE1/SAI5_RX_DATA0/UART2_RTS_B/GPIO4_30 |
SAI3 |
3.3V |
| 186 |
AG8 |
AG8/SAI3_RX_SYNC/GPT1_CAPTURE1/SAI5_RX_SYNC/SAI3_RX_DATA1/GPIO4_28 |
GPIO |
3.3V |
| 187 |
- |
GND |
GND |
GND |
| 188 |
AD9 |
AD9/GPIO1_13/USB1_OTG_OC/PWM2_OUT |
GPIO |
1.8V |
| 189 |
AC9 |
AC9/GPIO1_14/USB2_OTG_PWR/USDHC3_CD_B/PWM3_OUT/CLKO1 |
CLKO1 |
1.8V |
| 190 |
AB9 |
AB9/GPIO1_15/USB2_OTG_OC/USDHC3_WP/PWM4_OUT/CLKO2 |
GPIO |
1.8V |
| 191 |
AF11 |
AF11/GPIO1_7/ENET1_MDIOU/SDHC1_WP/EXT_CLK4 |
GPIO |
1.8V |
| 192 |
AG10 |
AG10/GPIO1_8/ENET1_EVENT0_IN/USDHC2_RESET_B |
GPIO |
1.8V |
| 193 |
AF10 |
AF10/GPIO1_9/ENET1_EVENT0_OUT/USDHC3_RESET_B/SDMA2_EXT_EVENT0 |
GPIO |
1.8V |
| 194 |
AG11 |
AG11/GPIO1_6/ENET1_MDCU/SDHC1_CD_B/EXT_CLK3 |
GPIO |
1.8V |
| 195 |
- |
GND |
GND |
GND |
| 196 |
AF12 |
AF12/GPIO1_5/M4_NMI/PMIC_READY |
GPIO |
1.8V |
| 197 |
- |
GND |
GND |
GND |
| 198 |
AF13 |
AF13/PMIC_nINT/GPIO1_3/1V8/PU/Z |
GPIO |
1.8V |
| 199 |
AB10 |
AB10/GPIO1_12/USB1_OTG_PWR/SDMA2_EXT_EVENT1 |
GPIO |
1.8V |
| 200 |
AC10 |
AC10/GPIO1_11/USB2_OTG_ID/USDHC3_VSELECT/PMIC_READY |
GPIO |
1.8V |
2.3 内部引脚使用说明
“邮票孔引脚号”为“-”表示核心板该内部引脚未引出至邮票孔，其他代表内部已使用且同时引出至核心板邮票孔。
表 7
| 邮票孔引脚号 |
芯片引脚号 |
引脚信号名称 |
引脚功能 |
参考电平 |
| - |
B27 |
B27/XTAL_24M |
OSC(Y1) |
1.8V |
| - |
C26 |
C26/XTALO_24M |
OSC(Y1) |
1.8V |
| - |
V26 |
V26/USDHC1_CLK/GPIO2_0 |
eMMC |
1.8V |
| - |
V27 |
V27/USDHC1_CMD/GPIO2_1 |
eMMC |
1.8V |
| - |
Y27 |
Y27/USDHC1_DATA0/GPIO2_2 |
eMMC |
1.8V |
| - |
Y26 |
Y26/USDHC1_DATA1/GPIO2_3 |
eMMC |
1.8V |
| - |
T27 |
T27/USDHC1_DATA2/GPIO2_4 |
eMMC |
1.8V |
| - |
T26 |
T26/USDHC1_DATA3/GPIO2_5 |
eMMC |
1.8V |
| - |
U27 |
U27/USDHC1_DATA4/GPIO2_6 |
eMMC |
1.8V |
| - |
U26 |
U26/USDHC1_DATA5/GPIO2_7 |
eMMC |
1.8V |
| - |
W27 |
W27/USDHC1_DATA6/GPIO2_8 |
eMMC |
1.8V |
| - |
W26 |
W26/USDHC1_DATA7/GPIO2_9 |
eMMC |
1.8V |
| - |
D27 |
D27/JTAG_MODE |
JTAG |
1.8V |
| - |
F26 |
F26/JTAG_TCK |
JTAG |
1.8V |
| - |
E27 |
E27/JTAG_TDI |
JTAG |
1.8V |
| - |
E26 |
E26/JTAG_TDO |
JTAG |
1.8V |
| - |
F27 |
F27/JTAG_TMS |
JTAG |
1.8V |
| - |
AG14 |
AG14/GPIO1_0/ENET_PHY_REF_CLK_ROOT/REF_CLK_32K/EXT_CLK1 |
LED1 |
1.8V |
| - |
AF14 |
AF14/GPIO1_1/PWM1_OUT/REF_CLK_24M/EXT_CLK2 |
LED2 |
1.8V |
| - |
A24 |
A24/PMIC_ON_REQ |
PMIC |
1.8V |
| - |
E24 |
E24/PMIC_STBY_REQ |
PMIC |
1.8V |
| - |
F24 |
F24/RTC_RESET_B |
PMIC |
1.8V |
| - |
A26 |
A26/RTC_XTALI |
PMIC |
1.8V |
| - |
AG13 |
AG13/GPIO1_2/WDOG1_WDOG_B/WDOG1_WDOG_ANY |
PMIC |
1.8V |
| - |
AB26 |
AB26/USDHC2_RESET_B/GPIO2_19/SYSTEM_RESET/PU |
PMIC |
1.8/3.3V |
| - |
AG12 |
AG12/GPIO1_4/USDHC2_VSELECT/SDMA1_EXT_EVENT1 |
PMIC |
1.8V |
| - |
B25 |
B25/RTC_XTAL0 |
通过0R接到VDD_SNVS_0V8 |
1.8V |
| - |
J24 |
J24/TSENSOR_RES_EXT |
通过100K下拉到GND |
1.8V |
| - |
J23 |
J23/TSENSOR_TEST_OUT |
接到测试点TP14 |
1.8V |
| - |
E19 |
E19/USB1_TXRTUNE |
通过200R电阻下拉至GND |
1.8V |
| - |
E22 |
E22/USB2_TXRTUNE |
通过200R电阻下拉至GND |
1.8V |
| 75 |
B24 |
B24/POR_B/PU |
POR_B |
1.8V |
| 167 |
F9 |
F9/I2C1_SDA/ENET1_MDIO/GPIO5_15/PU |
I2C(PMIC) |
1.8V |
| 168 |
E9 |
E9/I2C1_SCL/ENET1_MDC/GPIO5_14/PU |
I2C(PMIC) |
1.8V |
| 198 |
AF13 |
AF13/GPIO1_3/USDHC1_VSELECT/SDMA1_EXT_EVENT0 |
GPIO(PMIC) |
1.8V |
2.4 引脚上下拉、串联说明
下表为核心板内部已作上下拉配置或已串联电阻引脚的说明。表中未说明的引脚，核心板内部默认未作上下拉配置，直接引出至邮票孔。
表 8
| 邮票孔引脚号 |
芯片引脚号 |
引脚信号名称 |
上下拉配置 |
上下拉电阻值 |
| 36 |
D26 |
D26/TEST_MODE/PD |
下拉GND |
100K |
| 73 |
A25 |
A25/ONOFF/PU |
上拉1.8V |
100K |
| 75 |
B24 |
B24/POR_B/PU |
上拉1.8V |
100K |
| 166 |
E10 |
E10/I2C3_SCL/PWM4_OUT/GPT2_CLK/GPIO5_18/PU |
上拉1.8V |
4.7K |
| 165 |
F10 |
F10/I2C3_SDA/PWM3_OUT/GPT3_CLK/GPIO5_19/PU |
上拉1.8V |
4.7K |
| 170 |
D10 |
D10/I2C2_SCL/ENET1_EVENT1_IN/USDHC3_CD_B/GPIO5_16/PU |
上拉1.8V |
4.7K |
| 169 |
D9 |
D9/I2C2_SDA/ENET1_EVENT1_OUT/USDHC3_WP/GPIO5_17/PU |
上拉1.8V |
4.7K |
| 168 |
E9 |
E9/I2C1_SCL/ENET1_MDC/GPIO5_14/PU |
上拉1.8V |
4.7K |
| 167 |
F9 |
F9/I2C1_SDA/ENET1_MDIO/GPIO5_15/PU |
上拉1.8V |
4.7K |
| 164 |
D13 |
D13/I2C4_SCL/PWM2_OUT/PCIE1_CLKREQ_B/GPIO5_20/PU |
上拉1.8V |
4.7K |
| 163 |
E13 |
E13/I2C4_SDA/PWM1_OUT/GPIO5_21/PU |
上拉1.8V |
4.7K |
| 118 |
F22 |
F22/USB1_VBUS/Z |
- |
串接30K电阻 |
| 113 |
F23 |
F23/USB2_VBUS/Z |
- |
串接30K电阻 |
2.5 功能引脚信号走线长度与阻抗说明
下表为核心板MMC、NAND、RGMII、MIPI、USB、PCIe等功能引脚信号PCB走线长度与阻抗说明。
表 9
| 芯片引脚号 |
引脚信号名称 |
引脚功能 |
走线长度/mil |
阻抗说明 |
| W24 |
W24/USDHC2_CMD/GPIO2_14 |
MMC2 |
1487.663 |
单端50ohm |
| W23 |
W23/USDHC2_CLK/GPIO2_13 |
MMC2 |
1464.549 |
单端50ohm |
| V24 |
V24/USDHC2_DATA2/GPIO2_17 |
MMC2 |
1398.526 |
单端50ohm |
| V23 |
V23/USDHC2_DATA3/GPIO2_18/EARLY_RESET |
MMC2 |
1421.524 |
单端50ohm |
| AB26 |
AB26/USDHC2_RESET_B/GPIO2_19/SYSTEM_RESET |
MMC2 |
1067.168 |
单端50ohm |
| AB24 |
AB24/USDHC2_DATA1/GPIO2_16 |
MMC2 |
1405.585 |
单端50ohm |
| AB23 |
AB23/USDHC2_DATA0/GPIO2_15 |
MMC2 |
1476.677 |
单端50ohm |
| AA27 |
AA27/USDHC2_WP/GPIO2_20 |
MMC2 |
1180.179 |
单端50ohm |
| AA26 |
AA26/USDHC2_CD_B/GPIO2_12 |
MMC2 |
1225.512 |
单端50ohm |
| AG26 |
AG26/ENET1_RGMII_TD0/GPIO1_21 |
RGMII |
1064.397 |
单端50ohm |
| AG25 |
AG25/ENET1_RGMII_TD2/ENET1_TX_CLK/ENET_REF_CLK_ROOT/GPIO1_19 |
RGMII |
1076.698 |
单端50ohm |
| AG24 |
AG24/ENET1_RGMII_TXC/ENET1_TX_ER/GPIO1_23 |
RGMII |
1065.175 |
单端50ohm |
| AF26 |
AF26/ENET1_RGMII_TD1/GPIO1_20 |
RGMII |
1051.122 |
单端50ohm |
| AF25 |
AF25/ENET1_RGMII_TD3/GPIO1_18 |
RGMII |
1080.379 |
单端50ohm |
| AF24 |
AF24/ENET1_RGMII_TX_CTL/GPIO1_22 |
RGMII |
1057.4 |
单端50ohm |
| AF27 |
AF27/ENET1_RGMII_RX_CTL/GPIO1_24 |
RGMII |
1338.664 |
单端50ohm |
| AE27 |
AE27/ENET1_RGMII_RD0/GPIO1_26 |
RGMII |
1343.089 |
单端50ohm |
| AE26 |
AE26/ENET1_RGMII_RXC/ENET1_RX_ER/GPIO1_25 |
RGMII |
1342.18 |
单端50ohm |
| AD27 |
AD27/ENET1_RGMII_RD1/GPIO1_27 |
RGMII |
1331.81 |
单端50ohm |
| AD26 |
AD26/ENET1_RGMII_RD2/GPIO1_28 |
RGMII |
1348.798 |
单端50ohm |
| AC26 |
AC26/ENET1_RGMII_RD3/GPIO1_29 |
RGMII |
1353.969 |
单端50ohm |
| R27 |
R27/RAWNAND_WP_B/USDHC3_CMD/GPIO3_18 |
NAND |
1539.728 |
单端50ohm |
| R26 |
R26/RAWNAND_WE_B/USDHC3_CLK/GPIO3_17 |
NAND |
1554.472 |
单端50ohm |
| R22 |
R22/RAWNAND_DQS/QSPI_A_DQS/GPIO3_14 |
QSPI/NAND |
1935.761 |
单端50ohm |
| P27 |
P27/RAWNAND_CE1_B/QSPI_A_SS1_B/USDHC3_STROBE/GPIO3_2 |
QSPI/NAND |
1595.235 |
单端50ohm |
| P26 |
P26/RAWNAND_READY_B/USDHC3_RESET_B/GPIO3_16 |
NAND |
1598.812 |
单端50ohm |
| P23 |
P23/RAWNAND_DATA00/QSPI_A_DATA0/GPIO3_6 |
QSPI/NAND |
1879.639 |
单端50ohm |
| N27 |
N27/RAWNAND_RE_B/QSPI_B_DQS/USDHC3_DATA4/GPIO3_15 |
QSPI/NAND |
1640.482 |
单端50ohm |
| N26 |
N26/RAWNAND_DATA07/QSPI_B_DATA3/USDHC3_DATA3/GPIO3_13 |
QSPI/NAND |
1849.041 |
单端50ohm |
| N24 |
N24/RAWNAND_CE0_B/QSPI_A_SS0_B/GPIO3_1 |
QSPI/NAND |
1606.446 |
单端50ohm |
| N23 |
N23/RAWNAND_DATA03/QSPI_A_DATA3/USDHC3_WP/GPIO3_9 |
QSPI/NAND |
1860.02 |
单端50ohm |
| N22 |
N22/RAWNAND_ALE/QSPI_A_SCLK/GPIO3_0 |
QSPI/NAND |
1751.368 |
单端50ohm |
| M27 |
M27/RAWNAND_CE2_B/QSPI_B_SS0_B/USDHC3_DATA5/GPIO3_3 |
QSPI/NAND |
1570.118 |
单端50ohm |
| M26 |
M26/RAWNAND_DATA04/QSPI_B_DATA0/USDHC3_DATA0/GPIO3_10 |
QSPI/NAND |
1848.208 |
单端50ohm |
| L27 |
L27/RAWNAND_CE3_B/QSPI_B_SS1_B/USDHC3_DATA6/GPIO3_4 |
QSPI/NAND |
1596.684 |
单端50ohm |
| L26 |
L26/RAWNAND_DATA05/QSPI_B_DATA1/USDHC3_DATA1/GPIO3_11 |
QSPI/NAND |
1854.892 |
单端50ohm |
| K27 |
K27/RAWNAND_CLE/QSPI_B_SCLK/USDHC3_DATA7/GPIO3_5 |
QSPI/NAND |
1597.726 |
单端50ohm |
| K26 |
K26/RAWNAND_DATA06/QSPI_B_DATA2/USDHC3_DATA2/GPIO3_12 |
QSPI/NAND |
1859.997 |
单端50ohm |
| K24 |
K24/RAWNAND_DATA01/QSPI_A_DATA1/GPIO3_7 |
QSPI/NAND |
1877.673 |
单端50ohm |
| K23 |
K23/RAWNAND_DATA02/QSPI_A_DATA2/USDHC3_CD_B/GPIO3_8 |
QSPI/NAND |
1854.715 |
单端50ohm |
| B13 |
B13/MIPI_DSI_D3_P |
MIPI_DSI |
1014.601 |
差分100ohm |
| B12 |
B12/MIPI_DSI_D2_P |
MIPI_DSI |
1010.264 |
差分100ohm |
| B11 |
B11/MIPI_DSI_CLK_P |
MIPI_DSI |
1055.171 |
差分100ohm |
| B10 |
B10/MIPI_DSI_D1_P |
MIPI_DSI |
1100.49 |
差分100ohm |
| B9 |
B9/MIPI_DSI_D0_P |
MIPI_DSI |
1148.426 |
差分100ohm |
| A13 |
A13/MIPI_DSI_D3_N |
MIPI_DSI |
1016.33 |
差分100ohm |
| A12 |
A12/MIPI_DSI_D2_N |
MIPI_DSI |
1011.988 |
差分100ohm |
| A11 |
A11/MIPI_DSI_CLK_N |
MIPI_DSI |
1052.285 |
差分100ohm |
| A10 |
A10/MIPI_DSI_D1_N |
MIPI_DSI |
1102.214 |
差分100ohm |
| A9 |
A9/MIPI_DSI_D0_N |
MIPI_DSI |
1144.352 |
差分100ohm |
| B18 |
B18/MIPI_CSI_D3_P |
MIPI_CSI |
743.727 |
差分100ohm |
| B17 |
B17/MIPI_CSI_D2_P |
MIPI_CSI |
768.188 |
差分100ohm |
| B16 |
B16/MIPI_CSI_CLK_P |
MIPI_CSI |
792.649 |
差分100ohm |
| B15 |
B15/MIPI_CSI_D1_P |
MIPI_CSI |
832.719 |
差分100ohm |
| B14 |
B14/MIPI_CSI_D0_P |
MIPI_CSI |
885.396 |
差分100ohm |
| A18 |
A18/MIPI_CSI_D3_N |
MIPI_CSI |
745.454 |
差分100ohm |
| A17 |
A17/MIPI_CSI_D2_N |
MIPI_CSI |
769.917 |
差分100ohm |
| A16 |
A16/MIPI_CSI_CLK_N |
MIPI_CSI |
794.376 |
差分100ohm |
| A15 |
A15/MIPI_CSI_D1_N |
MIPI_CSI |
834.446 |
差分100ohm |
| A14 |
A14/MIPI_CSI_D0_N |
MIPI_CSI |
881.328 |
差分100ohm |
| Y27 |
Y27/USDHC1_DATA0/GPIO2_2 |
MMC1 |
1541.139 |
单端50ohm |
| Y26 |
V26/USDHC1_CLK/GPIO2_0 |
MMC1 |
1544.584 |
单端50ohm |
| W27 |
W27/USDHC1_DATA6/GPIO2_8 |
MMC1 |
1195.99 |
单端50ohm |
| W26 |
W26/USDHC1_DATA7/GPIO2_9 |
MMC1 |
1189.217 |
单端50ohm |
| V27 |
V27/USDHC1_CMD/GPIO2_1 |
MMC1 |
1445.206 |
单端50ohm |
| U27 |
U27/USDHC1_DATA4/GPIO2_6 |
MMC1 |
1159.843 |
单端50ohm |
| U26 |
U26/USDHC1_DATA5/GPIO2_7 |
MMC1 |
1250.174 |
单端50ohm |
| T27 |
T27/USDHC1_DATA2/GPIO2_4 |
MMC1 |
1535.641 |
单端50ohm |
| T26 |
T26/USDHC1_DATA3/GPIO2_5 |
MMC1 |
1487.741 |
单端50ohm |
| B23 |
B23/USB2_DP |
USB2 |
889.125 |
差分90ohm |
| A23 |
A23/USB2_DN |
USB2 |
885.018 |
差分90ohm |
| B22 |
B22/USB1_DP |
USB1 |
770.891 |
差分90ohm |
| A22 |
A22/USB1_DN |
USB1 |
764.651 |
差分90ohm |
| B20 |
B20/PCIE_TXN_P |
PCIe |
689.912 |
差分85ohm |
| A20 |
A20/PCIE_TXN_N |
PCIe |
689.553 |
差分85ohm |
| B19 |
B19/PCIE_RXN_P |
PCIe |
714.374 |
差分85ohm |
| A19 |
A19/PCIE_RXN_N |
PCIe |
714.015 |
差分85ohm |
| B21 |
B21/PCIE_REF_PAD_CLK_P |
PCIe |
698.535 |
差分85ohm |
| A21 |
A21/PCIE_REF_PAD_CLK_N |
PCIe |
698.176 |
差分85ohm |
核心板PCIe相关信号按照官方手册要求的85ohm差分走线设计。但由于评估底板PCIe接口需外接PCIe硬盘等设备，因此按照PCIe规范要求的100ohm差分走线设计，相关设计未发现会影响PCIe功能。
图 8
3 电气特性
3.1 工作环境
表 10
| 环境参数 |
最小值 |
典型值 |
最大值 |
| 工作温度 |
-40°C |
/ |
85°C |
| 存储温度 |
-50°C |
/ |
90°C |
| 工作湿度 |
35%（无凝露） |
/ |
75%（无凝露） |
| 存储湿度 |
35%（无凝露） |
/ |
75%（无凝露） |
| 工作电压 |
/ |
5.0V |
/ |
3.2 功耗测试
表 11
| 工作状态 |
电压典型值 |
电流典型值 |
功耗典型值 |
| 空闲状态 |
5.0V |
0.22A |
1.10W |
| 满负荷状态 |
5.0V |
0.61A |
3.05W |
备注：功耗基于TLIMX8-EVM评估板开启散热风扇的情况下测得。功耗测试数据与具体应用场景有关，测试数据仅供参考。
空闲状态：系统启动，评估板不接入其他外接模块，不执行程序。
满负荷状态：系统启动，评估板不接入其他外接模块，运行DDR压力读写测试程序，4个ARM Cortex-A53核心使用率约为100%。
3.3 热成像图
核心板安装好带风扇的散热器，在常温环境、满负荷状态下稳定工作10min后，测试核心板热成像图如下所示。H为最高温度，S为平均温度。
备注：不同测试条件下结果会有所差异，数据仅供参考。
图 9 不开启散热风扇
图 10 开启散热风扇
请参考以上测试结果，并根据实际情况合理选择散热方式。
4 机械尺寸
核心板主要硬件相关参数如下所示，仅供参考。
表 12
| 重量 |
11.5g |
| PCB尺寸 |
45mm*65mm |
| PCB层数 |
8层 |
| 元器件最高高度 |
1.295mm |
| PCB板厚 |
1.2mm |
图 11
图 12
元器件最高高度：指核心板最高元器件水平面与PCB正面水平面的高度差。核心板最高元器件为LDO(U3)。
5 底板设计注意事项
5.1 最小系统设计
基于SOM-TLIMX8核心板进行底板设计时，请务必满足最小系统设计要求，具体如下。
5.1.1 电源设计说明
（1） VDD_5V_SOM
VDD_5V_SOM(VDD_5V_MIAN)为核心板的主供电输入，电源功率建议参考评估板按最大10W进行设计。
图 13
VDD_5V_SOM在核心板内部未预留总电源输入的储能大电容，底板设计时请参照评估底板原理图，在靠近邮票孔焊盘位置放置储能大电容。
图 14
（2） VDD_3V3_SOM & VDD_1V8_SOM
VDD_3V3_SOM、VDD_1V8_SOM为核心板输出的BOOT SET配置专用供电电源，最大电流均约为200mA，请勿用于其他负载供电。
图 15
（3） VDD_3V3_MAIN & VDD_1V8_MAIN
VDD_3V3_MAIN、VDD_1V8_MAIN为底板提供的外设电源。为使VDD_3V3_MAIN、VDD_1V8_MAIN满足处理器的上电、掉电时序要求，推荐使用VDD_3V3_SOM电源来控制VDD_3V3_MAIN的电源使能，使用VDD_1V8_SOM电源来控制VDD_1V8_MAIN的电源使能。
图 16
图 17
5.1.2 系统启动配置
由于BOOT SET引脚与SAI1、GPIO存在复用关系，若使用SAI1、GPIO外接设备，请保证CPU在上电初始化过程中BOOT SET引脚电平不受外接设备的影响，否则将会导致CPU无法正常启动。
核心板内部BOOT_MODE3已设计100K下拉电阻，BOOT_CFG[15:0]和BOOT_MODE[2:0]未设计上下拉电阻，需在底板设计启动配置电路。设计系统启动配置电路时，请参考评估底板BOOT SET部分电路进行相关设计。
图 18
图 19
5.1.3 系统复位信号
（1） PMIC_KEY_RSTn(PMIC_POR_B)
PMIC_KEY_RSTn为PMIC的上电复位输入引脚，可用于控制i.MX 8M Mini复位输入引脚，以及外设接口的复位。PMIC内部已有上拉电阻，默认情况请悬空处理。
（2） B24/POR_B
B24/POR_B为CPU的复位输入引脚，核心板内部已设计100K上拉电阻，与PMIC的复位输出引脚PMIC_POR_B相连。对于有严格上电复位顺序的外设，需结合外设的上电和复位时序来使用B24/POR_B。
（3） A25/ONOFF
A25/ONOFF为CPU的开关机控制引脚，核心板内部已设计100K上拉电阻，默认情况请悬空处理。
5.2 其他设计注意事项
5.2.1 保留Micro SD卡接口
评估底板通过MMC2总线引出Micro SD卡接口，主要用于调试过程中使用Linux系统启动卡来启动系统，或批量生产时可基于Micro SD卡快速固化系统，底板设计时建议保留此外设接口。
5.2.2 保留UART2接口
评估底板将UART2_RXD和UART2_TXD引脚通过CH340T芯片引至Micro USB接口，作为系统调试串口使用，底板设计时建议保留UART2作为系统调试串口。
5.2.3 散热设计说明
对核心板散热设计建议如下。
（1） 当环境温度不高于60℃、核心板功耗不高于3.57W时，可考虑不添加散热片。
（2） 当环境温度不超过85℃、核心板功耗不高于3.64W时，可考虑使用不带风扇的散热片，但要求使用相变硅脂导热垫片进行导热。
（3） 当环境温度超过85℃时，强烈建议使用带风扇的散热片，并结合实际应用做进一步验证测试。