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IDTCV110L Datasheet(PDF) 4 Page - Integrated Device Technology

Part No. IDTCV110L
Description  PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR
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Maker  IDT [Integrated Device Technology]
Homepage  http://www.idt.com
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IDTCV110L Datasheet(HTML) 4 Page - Integrated Device Technology

 
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COMMERCIALTEMPERATURERANGE
4
IDTCV110L
PROGRAMMABLEFLEXPCCLOCKFORP4PROCESSOR
IDT CONFIDENTIAL
PIN DESCRIPTION (CONT.)
Pin Number
Name
Type
Description
43
CPU0#
OUT
Host0.7currentmodedifferentialclockoutput
44
CPU0
OUT
Host0.7currentmodedifferentialclockoutput
45
VSS_CPU
GND
GND
46
SCL
IN
SMBus clock
47
SDA
I/O
SMBus data
48
VDD_REF
PWR
3.3V
49
XTAL_OUT
OUT
XTALoutput
50
XTAL_IN
IN
XTALinput
51
VSS_REF
GND
GND
52
REF
OUT
14.318MHzreferenceclockoutput
53
FSC/TEST_SEL
IN
CPU frequencyselection. Selectstestmodeifpulledtoabove2VwhenVTT_PWRGD#isassertedLOW.
54
PCI0
OUT
PCI clock
55
PCI1
OUT
PCI clock
56
PCI2
OUT
PCI clock
INDEX BLOCK WRITE PROTOCOL
Bit
# of bits
From
Description
1
1
Master
Start
2-9
8
Master
D2h
10
1
Slave
Ack (Acknowledge)
11-18
8
Master
Registeroffsetbyte(startingbyte)
19
1
Slave
Ack (Acknowledge)
20-27
8
Master
Byte count, N (0 is not valid)
28
1
Slave
Ack (Acknowledge)
29-36
8
Master
first data byte (Offset data byte)
37
1
Slave
Ack (Acknowledge)
38-45
8
Master
2nd data byte
46
1
Slave
Ack (Acknowledge)
:
Master
Nth data byte
Slave
Acknowledge
Master
Stop
INDEX BLOCK READ PROTOCOL
Master can stop reading any time by issuing the stop bit without waiting
until Nth byte (byte count bit30-37).
Bit
# of bits
From
Description
1
1
Master
Start
2-9
8
Master
D2h
10
1
Slave
Ack (Acknowledge)
11-18
8
Master
Registeroffsetbyte(startingbyte)
19
1
Slave
Ack (Acknowledge)
20
1
Master
RepeatedStart
21-28
8
Master
D3h
29
1
Slave
Ack (Acknowledge)
30-37
8
Slave
Byte count, N (block read back of N
bytes), power on is 8
38
1
Master
Ack (Acknowledge)
39-46
8
Slave
first data byte (Offset data byte)
47
1
Master
Ack (Acknowledge)
48-55
8
Slave
2nd data byte
Ack (Acknowledge)
:
Master
Ack (Acknowledge)
Slave
Nth data byte
Notacknowledge
Master
Stop
INDEX BYTE WRITE
Setting bit[11:18] = starting address, bit[20:27] = 01h.
INDEX BYTE READ
Setting bit[11:18] = starting address. After reading back the first data byte,
masterissuesStopbit.


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