AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 1237

• Manufacturer Part Number: AT32UC3C1512C Automotive
• Manufacturer: Atmel Corporation

39.6.7.7
39.6.7.8
39.6.7.9
9166C–AVR-08/11
DISABLE
MEMORY_WRITE
2_PIN_MODE
Disables the AW. The AW will respond with an ACK response and then disable itself.
Table 39-38. DISABLE Details
Enables the DATAOUT pin as an output pin. All responses sent from the aWire slave will be sent
on this pin, instead of the RESET_N pin, starting with the ACK for the 2_PIN_MODE command.
Table 39-39. DISABLE Details
This command enables programming of memory/writing to registers on the SAB. The
MEMORY_WRITE command allows words, halfwords, and bytes to be programmed to a contin-
uous sequence of addresses in one operation. Before transferring the data, the user must
supply:
The 4 MSB of the 36 bit SAB address are submitted together with the size field (2 bits). Then fol-
lows the 4 remaining address bytes and finally the data bytes. The size of the transfer is
specified using the values from the following table:
Table 39-40. Size Field Decoding
Below is an example write command:
Command
Command value
Additional data
Possible responses
Command
Command value
Additional data
Possible responses
Size field
00
01
10
11
1. The number of data bytes to write + 5 (size and starting address) in the length field.
2. The size of the transfer: words, halfwords, or bytes.
3. The starting address of the transfer.
1. 0x55 (sync)
2. 0x80 (command)
3. 0x00 (length MSB)
Details
0x07
N/A
0x40: ACK
0x41: NACK
Details
0x07
N/A
0x40: ACK
0x41: NACK
Description
Byte transfer
Halfword transfer
Word transfer
Reserved
(Section
(Section
(Section
(Section
39.6.8.1)
39.6.8.1)
39.6.8.2)
39.6.8.2)
AT32UC3C
1237