CY28354-400
Document #: 38-07615 Rev. *B
Page 3 of 9
Serial Configuration Map
• The Serial bits will be read by the clock driver in the following
order.
Byte 0 – Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte 1 – Bits 7, 6, 5, 4, 3, 2, 1, 0
Byte N – Bits 7, 6, 5, 4, 3, 2, 1, 0
• Reserved and unused bits should be programmed to “0”
• SMBus Address for the CY28354 is as follows.
Table 2. Block Read and Block Write Protocol
Block Write Protocol
Block Read Protocol
Bit
Description
Bit
Description
1
Start
1
Start
2:8
Slave address – 7 bits
2:8
Slave address – 7 bits
9Write = 0
9
Write = 0
10
Acknowledge from slave
10
Acknowledge from slave
11:18
Command Code – 8 bits
'00000000' stands for block operation
11:18
Command Code – 8 bits
'00000000' stands for block operation
19
Acknowledge from slave
19
Acknowledge from slave
20:27
Byte Count from master – 8 bits
20
Repeat start
28
Acknowledge from slave
21:27
Slave address – 7 bits
29:36
Data byte 0 from master – 8 bits
28
Read = 1
37
Acknowledge from slave
29
Acknowledge from slave
38:45
Data byte 1 from master – 8 bits
30:37
Byte count from slave – 8 bits
46
Acknowledge from slave
38
Acknowledge
....
Data bytes from master/Acknowledge
39:46
Data byte 0 from slave – 8 bits
....
Data Byte N – 8 bits
47
Acknowledge
....
Acknowledge from slave
48:55
Data byte 1 from slave – 8 bits
....
Stop
56
Acknowledge
....
Data bytes from slave/Acknowledge
....
Data byte N from slave – 8 bits
....
Not Acknowledge
....
Stop
A6 A5 A4 A3 A2 A1 A0 R/W
SEL ADDR = 1
1101001
—
SEL ADDR = 0
1101110
—
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