快播大屏幕A310 TTL定义

这些日子都在研究快播大屏幕，但最终还是毁在自己手上了，然后开始研究Raspberry Pi了，昨天正好PL2303 USB TTL串口编程器到了，然后看见快播大屏幕上有3个奇怪的金属点，凭自己经验来看，这3个金属点一定内有蹊跷，通过万用表测量得出电压为3.3V，得出结论果然为TTL接口，下面附上接口定义图。

由于笔者不是专业维修人员，在单片机领域也算是一个打酱油的，昨天试图连接这几个触点也费了老大的力，最终在基友的帮忙下 用锋线针连接上。

既然TTL找到了，各位Geek们可以继续升入研究。。

以下是我昨天抓取到的信息

þ0x000000c4

00=0x00000000

01=0x00000000

02=0x00000320

03=0x0000017f

04=0x0000031c

05=0x00000000

06=0x00000000

07=0x000000c8

08=0x00000000

09=0x00000000

0a=0x00000000

0b=0x00000000

0c=0x00000000

0d=0x00000000

0e=0x00000000

0f=0x00000000

10=0x00000000

11=0x00000000

12=0x00000000

13=0x00000000

14=0x00000018

15=0x00000000

16=0x00000000

17=0x00000000

18=0x00000000

19=0x00000000

1a=0x00000000

1b=0x00000000

1c=0x00000000

1d=0x00000000

1e=0x00000180

1f=0x00000320

20=0x00000000

21=0x00000000

22=0x00000000

23=0x00000000

24=0x00000000

25=0x00000000

26=0x00000000

27=0x00000000

28=0x00000000

29=0x00000000

2a=0x001x0002a60b

 

wait pll03target is0210 now it is0x0000020f

wait pll1etarget is0210 now it is0x00000210

 

ddr3 : 00000210 MHz

Aug  3 201218:54:02

lane00 Success06

lane01 Success06

lane02 Success06

lane03 Success06

Stage 00 Result 00000000

Stage 01 Result 00000000

Stage 02 Result 00000000

Stage 03 Result 000000000×00000000

0x000000c8

Systemp Started

Boot From SPIucl decompress

0x8f800000

decompress t

 

 

U-Boot 2010.06-svn709(m3_oplay@trunk) (Aug 03 2012 – 18:52:44)

 

DRAM:  512 MiB

unknow ddr type

NAND:  Amlogic nand flash uboot driver for M3, Version 1.1 (c) 2010 Amlogic Inc.

No NAND device found!!!

NAND device id: e8 d1 90 78 50 41

No NAND device found!!!

nandboot initialized error

nand init faile: -6

No NAND device found!!!

NAND device id: e8 d1 90 78 50 41

No NAND device found!!!

nandmulti initialized error

nand init faile: -6

read enviroment failed

*** Warning – bad CRC or NAND, using default environment

 

In:    serial

Out:   serial

Err:   serial

Dcache status 1

Icache status 1

hold_time: 50000

i =2

outputmode = 720p

not set screen size yet

reboot_mode: 565756552

(Re)start USB…

USB:   dwc_usb driver version: 2011-OCT-11

usb id mode: SW_HOST

usb clk_sel: XTAL input divided by 2

dwc_otg: usb_lowlevel_init: base addr: 0xc9040000

dwc_otg: No USB device found !

Error, couldn't init Lowlevel part

 

** Invalid boot device **

 

** Invalid boot device **

Normal Start…

Hit any key to stop autoboot:  0

Unknown command 'echog' – try 'help'

Wrong Image Format for bootm command

ERROR: can't get kernel image!

Unknown command 'echo' – try 'help'

Wrong Image Format for bootm command

ERROR: can't get kernel image!

8726M3_MBX #