CY28419
Table 4. Block Read and Block Write Protocol
(continued)
Block Write Protocol
19
20:27
28
29:36
37
38:45
46
....
....
....
....
....
....
Acknowledge from slave
Byte Count – 8 bits
Acknowledge from slave
Data byte 1 – 8 bits
Acknowledge from slave
Data byte 2 – 8 bits
Acknowledge from slave
......................
Data Byte (N–1) –8 bits
Acknowledge from slave
Data Byte N –8 bits
Acknowledge from slave
Stop
19
20
21:27
28
29
30:37
38
39:46
47
48:55
56
....
....
....
Table 5. Byte Read and Byte Write Protocol
Byte Write Protocol
Bit
1
2:8
9
10
11:18
Start
Slave address – 7 bits
Write = 0
Acknowledge from slave
Command Code – 8 bits
'100xxxxx' stands for byte operation, bits[6:0] 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
Description
Bit
1
2:8
9
10
11:18
Start
Slave address – 7 bits
Write = 0
Acknowledge from slave
Command Code – 8 bits
'100xxxxx' stands for byte operation, bits[6:0] 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
Block Read Protocol
Acknowledge from slave
Repeat start
Slave address – 7 bits
Read = 1
Acknowledge from slave
Byte count from slave – 8 bits
Acknowledge from master
Data byte from slave – 8 bits
Acknowledge from master
Data byte from slave – 8 bits
Acknowledge from master
Data byte N from slave – 8 bits
Acknowledge from master
Stop
19
20:27
28
29
19
20
21:27
28
29
30:37
38
39
Rev 1.0, November 22, 2006
Page 4 of 15
SPECTRALINEAR [ SPECTRALINEAR INC ]
