资料介绍
L开机流程介绍L平台开机流程介绍
展讯通信 主讲人：Nick.Zhao
开机的条件
VBAT is high. PBINT is high CHINT is high ALARM INT
d a e r Sp
m u tr
n o C
l a i t n e d fi
2010-3-2
保密信息
.2
ROM Code软件流程
Start
Initialize the IRAM, Pin, UART and Keypad
USB Bootstrap Pin is Set? No
d a e r Sp
Yes Send the Version String and go to UartBoot Mode
Key(0,0) is Pressed? No
m u tr
No
n o C
Yes
Yes
l a i t n e d fi
Receive two 0x7e?
Remap and Jump to 0x0
Send the Version String and go to USB Boot Mode
2010-3-2
保密信息
.3
Before __main Code from tx_illdb.s Work flow
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