SI52144 Datasheet, PDF (12/20 Pages) Silicon Laboratories – PCI-EXPRESS GEN 1, GEN 2, & GEN 3 CLOCK QUAD OUTPUT GENERATOR

Si52144
Table 6. Byte Read and Byte Write Protocol
Byte Write Protocol
Bit
Description
1
Start
8:2 Slave address–7 bits
9
Write
10 Acknowledge from slave
18:11 Command Code–8 bits
19 Acknowledge from slave
27:20 Data byte–8 bits
28 Acknowledge from slave
29 Stop
Bit
1
8:2
9
10
18:11
19
20
27:21
28
29
37:30
38
39
Byte Read Protocol
Description
Start
Slave address–7 bits
Write
Acknowledge from slave
Command Code–8 bits
Acknowledge from slave
Repeated start
Slave address–7 bits
Read
Acknowledge from slave
Data from slave–8 bits
NOT Acknowledge
Stop
12
Preliminary Rev. 0.1