本文介绍MTK原厂最新设计资料-MT6261_Design_Notice-V1.5，以下内容都是原资料内容，没做中文翻译，需要的可到一牛网论坛下载原资料参考
Outline
▪ MT6261 Features Overview
▪ Design Notice
– Baseband / Vibrator / Extend key
– The way of use short and open pad
– Audio / Speech
– SFI/EMI
– LCM
– RTC
– SD card
– Camera
– SIM
– USB
– PMU
– Pulse Charging / BC 1.1
– USB download without battery
– ATV
– FM
– Bluetooth
– GPRS RF
MT6261系列功能块介绍
MT6261芯片特性：
Processor :
▪ ARM7EJ-S 260 MHz
PMU :
▪ PMU/R-type TP/Backlight driver/ Vib driver
– PMU integrate 12 LDO
– R-type controller
– PMU support 1 channel current sink for serial LED of LCD backlight
– PMU support V Boost for audio AMP
– Support 2 SIM interface
– PMU support 1 channel for KEYPAD LED .
– Support RTC Less
Memory :
▪ 61A : ex SF ( please check QVL )
▪ 61D/M : SIP 32Mb/24Mb Serial Flash up to 133Mhz .
▪ Booting from Serial Flash
▪ Stack up 32Mb MTK PSRAM up to 133MHz
Multimedia :
▪ Supports dual LCDs
▪ Dedicate serial 1.8 LCM interface
▪ LCD resolution up to QVGA
▪ Support Serial camera
▪ Camera resolution VGA
Connectivity :
▪ USB 1.1 FS (12 Mbps)
▪ 5 x5 double keypad
▪ BT / FM embedded
▪ BT 3.0 Integrated + 2.1 EDR
Modem:
▪ 6261D : GSM/GPRS
Quad Band, TX/RX VAMOS
▪ 6261M : GSM Quad Band
▪ Integrated RF transceiver , single-end SAW less
Audio:
▪ Integrated max1.5W V Boost high power Class K speaker amplifier
Speech:
▪ Support FR/HR/EFR/AMR speech codec
Data storage:
▪ 4 bit memory card interface with dedicate LDO (Max:3.3)
▪ Support SD2.0 / SDIO1.1
Package:
▪ 8.1*7.6 mm^2
▪ 145balls , 0.5 mm pitch , 55 process
▪ TFBGA package
MT6261 BB设计说明（硬件引脚1/4）
MT6261 BB设计说明（硬件引脚2/4）
MT6261 BB设计说明（硬件引脚3/4）
MT6261 BB设计说明（硬件引脚4/4）
MT6261 BB设计说明(另一)
Used as 26MHz clock provided from 6261.
GPIO10 can be used as ATV_enable
MT6261 BB设计说明（JTAG1/2）
MT6261 BB设计说明（JTAG2/2）
请在键盘/摄像机接口上保留测试点，详细信息请参见引脚MUX表
MT6261 BB设计说明(RTP)
▪ Recommend to reserve 0ohm and varistors in the first version.
▪ For RF desense issue, replace 0ohm with adequate beads.
▪ For ESD issue, mount adequate varistors. The capacitance of varistors should be less than 100pF.
▪ Otherwise, these components can be removed in later versions to save BOM cost.
MT6261 BB设计说明（AGPIO）
AGPIO on RF pin ,which will be used for EINT and GPIOs
– 2 among of the 4 pins serve as only input (EINT/SRCLKENAI)
– Voltage 2.8V power domain
– GPIO_10=AGPIO54≠GPIO10
– GPIO_11=AGPIO55≠GPIO11
AGPIO on RF pin ,there are some limit when use it as GPIO function
– GPIO_10and GPIO_11 have a uncontrollable status when Battery insert ，So you’d better not use AGPIO to control sensitive
device
MT6261扩展关键设计说明（硬件）
MT6261扩展关键设计说明(工具)
