Send/Receive Byte Protocol With Pec; Write Byte/Word Protocol Without Pec; Write Byte/Word Protocol With Pec - Intel 6300ESB Datasheet

Table 117. Send/Receive Byte Protocol with PEC
Bit
1
2–8
9
10
11–18
19
20–27
28
29
Write Byte/Word
The first byte of a Write Byte/Word access is the command code. The next 1 or 2 bytes
are the data to be written. When programmed for a Write Byte/Word command, the
Transmit Slave Address, Device Command, and Data0 Registers are sent. In addition,
the Data1 Register is sent on a Write Word command. Software must force the I2C_EN
bit to 0 when running this command. The format of the protocol is shown in
and Table
Table 118. Write Byte/Word Protocol without PEC
Bit
1
2–8
9
10
11–18
19
20–27
28
29
Table 119. Write Byte/Word Protocol with PEC
Bit
1
2–8
9
®
Intel 6300ESB I/O Controller Hub
DS
240
Send Byte Protocol
Description
Start
Slave Address - 7 bits
Write
Acknowledge from slave
Command code - 8 bits
Acknowledge from slave
PEC
Acknowledge from slave
Stop
119.
Write Byte Protocol
Description
Start
Slave Address - 7 bits
Write
Acknowledge from slave
Command code - 8 bits
Acknowledge from slave
Data Byte - 8 bits
Acknowledge from Slave
Stop
Write Byte Protocol
Description
Start
Slave Address - 7 bits
Write
Intel
Receive Byte Protocol
Bit Description
1 Start
2–8 Slave Address - 7 bits
9 Read
10 Acknowledge from slave
11–18 Data byte from slave
19 Acknowledge
20–27 PEC from slave
28 Not Acknowledge
29 Stop
Write Word Protocol
Bit Description
1 Start
2–8 Slave Address - 7 bits
9 Write
10 Acknowledge from slave
11–18 Command code - 8 bits
19 Acknowledge from slave
20–27 Data Byte Low - 8 bits
28 Acknowledge from Slave
29–36 Data Byte High - 8 bits
37 Acknowledge from slave
38 Stop
Write Word Protocol
Bit Description
1 Start
2–8 Slave Address - 7 bits
9 Write
Order Number: 300641-004US
®
6300ESB ICH—5
Table 118
November 2007