CY28325PVC-2 Cypress Semiconductor Corp., CY28325PVC-2 Datasheet - Page 5

• Manufacturer Part Number: CY28325PVC-2
• Description: Frequency Timing Generators For PC And Server Motherboards
• Manufacturer: Cypress Semiconductor Corp.

Table 2. Block Read and Block Write Protocol
Table 3. Byte Read and Byte Write Protocol
Document #: 38-07119 Rev. *A
11:18
20:27
29:36
38:45
11:18
20:27
2:8
2:8
Bit
Bit
10
19
28
37
46
10
19
28
29
...
...
...
...
1
9
1
9
“1xxxxxxx” stands for byte operation; bit[6:0] of the
command code represents the offset of the byte to
“00000000” stands for block operation
Block Write Protocol
Data byte N/Slave acknowledge...
Byte Write Protocol
Acknowledge from slave
Command Code – 8 bits
Acknowledge from slave
Acknowledge from slave
Acknowledge from slave
Acknowledge from slave
Acknowledge from slave
Acknowledge from slave
Command Code – 8 bits
Acknowledge from slave
Acknowledge from slave
Slave address – 7 bits
Slave address – 7 bits
Data Byte N – 8 bits
Data byte 0 – 8 bits
Data byte 1 – 8 bits
Byte Count – 8 bits
Data byte – 8 bits
be accessed
Description
Description
Write
Write
Start
Stop
Start
Stop
PRELIMINARY
11:18
21:27
30:37
39:46
48:55
11:18
21:27
30:37
Bit
2:8
Bit
2:8
10
19
20
28
29
38
47
56
10
19
20
28
29
38
39
...
...
...
...
1
9
1
9
“1xxxxxxx” stands for byte operation; bit[6:0] of the
command code represents the offset of the byte to
“00000000” stands for block operation
Data bytes from slave/acknowledge
Block Read Protocol
Byte Read Protocol
Data byte N from slave – 8 bits
Byte count from slave – 8 bits
Data byte from slave – 8 bits
Data byte from slave – 8 bits
Data byte from slave – 8 bits
Acknowledge from slave
Command Code – 8 bits
Acknowledge from slave
Acknowledge from slave
Acknowledge from slave
Command Code – 8 bits
Acknowledge from slave
Acknowledge from slave
Slave address – 7 bits
Slave address – 7 bits
Slave address – 7 bits
Slave address – 7 bits
Not acknowledge
Not acknowledge
Acknowledge
Acknowledge
Acknowledge
be accessed
Description
Description
Repeat start
Repeat start
Read
Read
Write
Write
Start
Stop
Start
Stop
CY28325-2
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