IDTCV142PAG IDT, Integrated Device Technology Inc, IDTCV142PAG Datasheet - Page 5

• Manufacturer Part Number: IDTCV142PAG
• Description: IC FLEXPC CLK PROGR P4 56-TSSOP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: FlexPC™r
• Type: PC Clockr

Specifications of IDTCV142PAG

• 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-TSSOP
• Frequency-max: 400MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: CV142PAG

SSC MAGNITUDE CONTROL FOR CPU,
SRC, AND SMC
CONTROL REGISTERS
N PROGRAMMING PROCEDURE
BYTE 0
IDTCV142
PROGRAMMABLE FLEXPC CLOCK FOR P4 PROCESSOR
•
•
Bit
0
1
2
3
4
5
6
7
Use Index byte write.
For N programming, the user only needs to access Byte 12, Byte 13, and Byte 10.
1.
2.
3.
SMC[2:0]
000
001
010
011
100
101
110
111
Write Byte 12 for CPU PLL N, CPU f = N* Resolution (see resolution table).
Write Byte 13 for SRC PLL N, SRC f = N*0.666667, PCI = SRC f /3.
Enable N Programming bit, Byte 10 bit 1. Once this bit is enabled, any N value will be changed on the fly.
Output(s) Affected
CPU2, CPU2#/
SRC0, SRC0#
SRC1, SRC1#
SRC2, SRC2#
SRC3, SRC3#
SRC4, SRC4#
SRC5, SRC5#
SRC7, SRC7#
Reserved
Description/Function
±0.125
±0.375
±0.25
-0.25
-0.75
±0.5
-0.5
Output Enable
Output Enable
Output Enable
Output Enable
Output Enable
Output Enable
Output Enable
-1
5
RESOLUTION
S.E. CLOCK STRENGTH SELECTION
(PCI, REF, USB48)
Tristate
Tristate
Tristate
Tristate
Tristate
Tristate
Tristate
CPU (MHz)
0
100
133
166
200
266
333
400
Str[1:0]
00
01
10
11
Enable
Enable
Enable
Enable
Enable
Enable
Enable
1
COMMERCIAL TEMPERATURE RANGE
Resolution
0.666667
0.666667
1.333333
1.333333
1.333333
2.666667
2.666667
Type
RW
RW
RW
RW
RW
RW
RW
RW
Level
0.8
0.6
1.2
1
N =
150
200
125
150
200
125
150
Power On
1
1
1
1
1
1
1
1