ICS841S01 Datasheet, PDF (4/16 Pages) Integrated Device Technology – PCI EXPRESS™ CLOCK GENERATOR

ICS841S01
PCI EXPRESS™ CLOCK GENERATOR
TABLE 3C. BYTE READ AND BYTE WRITE PROTOCOL
BIT
1
2:8
9
10
11:18
19
20:27
28
29
Description = Byte Write
Start
Slave address - 7 bits
Write
Acknowledge from slave
Command Code - 8 bits
Acknowledge from slave
Data byte - 8 bits
Acknowledge from slave
Stop
BIT
1
2:8
9
10
11:18
19
20
21:27
28
29
30:37
38
39
Description = Byte Read
Start
Slave address - 7 bits
Write
Acknowledge from slave
Command Code - 8 bits
Acknowledge from slave
Repeat start
Slave address - 7 bits
Read
Acknowledge from slave
Data from slave - 8 bits
Not Acknowledge
Stop
CONTROL REGISTERS
TABLE 4A. BYTE 0:CONTROL REGISTER 0
BIT
@Pup
7
0
6
1
5
1
4
1
3
1
2
1
1
0
0
0
Name
Reserved
Reserved
Reserved
Reserved
Reserved
SRC[T/C]0
Reserved
Reserved
Description
Reserved
Reserved
Reserved
Reserved
Reserved
SRC[T/C]0 Output Enable
0 = Disable (Hi-Z)
1 = Enable
Reserved
Reserved
PRELIMINARY
IDT^™ / ICS^™ PCI EXPRESS CLOCK GENERATOR
4
ICS841S01BG REV. B MAY 23, 2007