Datasheet

 2011 Microchip Technology Inc. DS41606B-page 35
AR1100 RESISTIVE USB AND RS-232 TOUCH SCREEN CONTROLLER
8.4 Command: INIT
Initialize the boot load process – executed as the first
step after Reset.
COMMAND PACKET:
RESPONSE PACKET:
8.5 Command: WRITE
The WRITE command facilitates programming Flash or
EEPROM. The Most Significant Byte of the 24-bit
address in the WRITE command dictates the destina-
tion. The AR1100 maps Flash to 0x000000 and
EEPROM, to 0xF00000.
COMMAND PACKET:
RESPONSE PACKET:
8.6 Command: READ
Read from device Flash or EEPROM.
REMINDER: Flash data will be encrypted while
EEPROM data will not be encrypted.
COMMAND PACKET:
RESPONSE PACKET:
TABLE 8-6: COMMAND: INIT
BYTE# VALUE DESCRIPTION
1 0x55 SYNC
20x01SIZE
3 0xF1 COMMAND
TABLE 8-7: RESPONSE: INIT
BYTE# VALUE DESCRIPTION
1 0x55 SYNC
22SIZE
3 STATUS STATUS
4 0xF1 COMMAND
TABLE 8-8: COMMAND: WRITE
BYTE# VALUE DESCRIPTION
1 0x55 SYNC
2 N+4 SIZE (N = # of data bytes
to write)
30xF2COMMAND
4 ADDR 07:00 ADDRESS
5 ADDR 15:08
6 ADDR 23:16
7 [DATA 1] DATA (to be written)
... ...
N+6 [DATA N]
TABLE 8-9: RESPONSE: WRITE
BYTE# VALUE DESCRIPTION
1 0x55 SYNC
22SIZE
3 STATUS STATUS
4 0xF2 COMMAND (WRITE)
TABLE 8-10: COMMAND: READ
BYTE# VALUE DESCRIPTION
1 0x55 SYNC
20x05SIZE
3 0xF3 COMMAND
4 ADDR 07:00 ADDRESS
5 ADDR 15:08
6 ADDR 23:16
7 N # Bytes to Read
TABLE 8-11: RESPONSE: READ
BYTE# VALUE DESCRIPTION
1 0x55 SYNC
2 N+2 SIZE (N = # of data bytes
to read)
3 STATUS STATUS
4 0xF3 COMMAND
5[DATA 1]
6...
7 [DATA N]