IDTCV115FPVG IDT, Integrated Device Technology Inc, IDTCV115FPVG Datasheet - Page 4

• Manufacturer Part Number: IDTCV115FPVG
• Description: IC FLEXPC CLK PROGR P4 56-SSOP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: FlexPC™r
• Type: PC Clockr

Specifications of IDTCV115FPVG

• Input: Crystal
• Output: Clock
• Frequency - Max: 400MHz
• Voltage - Supply: 3.135 V ~ 3.465 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 56-SSOP
• Frequency-max: 400MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: CV115FPVG

PIN DESCRIPTION (CONT.)
SM PROTOCOL
INDEX BLOCK WRITE PROTOCOL
INDEX BYTE WRITE
Setting bit[11:18] = starting address, bit[20:27] = 01h.
IDTCV115F
PROGRAMMABLE FLEXPC™ CLOCK FOR P4 PROCESSOR
Pin Number
11-18
20-27
29-36
38-45
Bit
2-9
10
19
28
37
46
1
47
48
49
50
51
52
53
54
55
56
# of bits
1
8
1
8
1
8
1
8
1
8
1
V
XTAL_OUT
Master
Master
Master
Master
Master
Master
Master
Master
DD
From
Slave
Slave
Slave
Slave
Slave
V
Slave
XTAL_IN
V
DD
SS
_Suspend
Name
REF0
FS_A
PCI0
PCI1
SCL
_REF
_REF
Start
D2h
Ack (Acknowledge)
Register offset byte (starting byte)
Ack (Acknowledge)
Byte count, N (0 is not valid)
Ack (Acknowledge)
first data byte (Offset data byte)
Ack (Acknowledge)
2nd data byte
Ack (Acknowledge)
:
Nth data byte
Acknowledge
Stop
Type
PWR
GND
PWR
OUT
OUT
OUT
OUT
I N
I N
IN
Description
SMBus CLK
3.3V
Xtal output
Xtal input
GND
14.318 MHz reference clock output
In the power down mode, supply 3.3V to SM control registers, <1mA. In the normal operation, regular
V
CPU frequency selection
PCI clock
PCI clock
DD
.
4
INDEX BYTE READ
Setting bit[11:18] = starting address. After reading back the first data byte,
master issues Stop bit.
INDEX BLOCK READ PROTOCOL
Master can stop reading any time by issuing the stop bit without waiting
until Nth byte (byte count bit30-37).
11-18
21-28
30-37
39-46
48-55
Bit
2-9
10
19
20
29
38
47
1
# of bits
1
8
1
8
1
1
8
1
8
1
8
1
8
Master
Master
Master
Master
Master
Master
Master
Master
Master
Slave
Slave
Slave
Slave
Slave
Slave
Slave
From
Description
COMMERCIAL TEMPERATURE RANGE
Start
D2h
Ack (Acknowledge)
Register offset byte (starting byte)
Ack (Acknowledge)
Repeated Start
D3h
Ack (Acknowledge)
Byte count, N (block read back of N
Ack (Acknowledge)
first data byte (Offset data byte)
Ack (Acknowledge)
2nd data byte
Ack (Acknowledge)
Ack (Acknowledge)
Nth data byte
Not acknowledge
Stop
bytes), Byte 8
:
Description