cy28325-3 Cypress Semiconductor Corporation., cy28325-3 Datasheet - Page 6

• Manufacturer Part Number: cy28325-3
• Description: Ftg For Via Pentium 4 Chipsets
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 38-07590 Rev. *.*
Table 4. Byte Read and Byte Write Protocol
11:18
20:27
2:8
Bit
10
19
28
29
1
9
Start
Slave address – 7 bits
Write = 0
Acknowledge from slave
Command Code – 8 bits
'100xxxxx' stands for byte operation, bits[4:0] of the
command code represents the offset of the byte to
be accessed
Acknowledge from slave
Data byte from master – 8 bits
Acknowledge from slave
Stop
Byte Write Protocol
Description
21:27
30:37
11:18
2:8
Bit
10
19
20
28
29
38
39
1
9
Start
Slave address – 7 bits
Write = 0
Acknowledge from slave
Command Code – 8 bits
'100xxxxx' stands for byte operation, bits[4:0] of
the command code represents the offset of the
byte to be accessed
Acknowledge from slave
Repeat start
Slave address – 7 bits
Read = 1
Acknowledge from slave
Data byte from slave – 8 bits
Acknowledge from master
Stop
Byte Read Protocol
Description
CY28325-3
Page 6 of 19
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