參數(shù)資料
型號(hào): IDT74CV105BPV
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時(shí)鐘產(chǎn)生/分配
英文描述: 200 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO48
封裝: SSOP-48
文件頁數(shù): 4/21頁
文件大小: 94K
代理商: IDT74CV105BPV
COMMERCIALTEMPERATURERANGE
12
IDTCV105B
CLOCKGENERATORFORDESKTOPPCPLATFORMS
BYTE 29: AGP/PCI N PROGRAMMING
In AGP/PCI N programming mode, AGP/PCI frequency = APN[9:0] * 0.223721591. APN[9:0] range is 290 - 600. APN0 has to be written for the APN[9:0]
to be loaded into PLL N divider.
Bit
Output(s)Affected
Description/Function
0
1
Type
Power On
7
APN7
AGP/PCI PLL N7
RW
6
APN6
AGP/PCI PLL N6
RW
5
APN5
AGP/PCI PLL N5
RW
4
APN4
AGP/PCI PLL N4
RW
3
APN3
AGP/PCI PLL N3
RW
2
APN2
AGP/PCI PLL N2
RW
1
APN1
AGP/PCI PLL N1
RW
0
APN0
AGP/PCI PLL N0
RW
BYTE 30: AGP/PCI SRC CONTROL
Bit
Output(s)Affected
Description/Function
0
1
Type
Power On
7
AGP/PCI N Programming Mode Enable
AGP/PCI N Programming Enable
Disable
Enable
RW
0
6
AGP/PCI Frequency Source Select
0 = fixed 66/33MHz
66/33MHz
RW
0
1 = selected by AFS[2:0](1)
5
AGP SMC 2
AGP/PCI SSC magnitude control(2)
RW
0
4
AGP SMC 1
AGP/PCI SSC magnitude control(2)
RW
1
3
AGP SMC 0
AGP/PCI SSC magnitude control(2)
RW
0
2
3V66-PCI/F skew 2
Adjust 3V66 and PCI/F skew(3)
RW
0
1
3V66-PCI/F skew 1
Adjust 3V66 and PCI/F skew(3)
RW
0
3V66-PCI/F skew 0
Adjust 3V66 and PCI/F skew(3)
RW
0
NOTES:
1. See AGP/PCI FREQUENCY SELECTION table.
2. See SMC table.
3. See 3V66 AND PCI/F SKEW table.
BYTE 31: WATCHDOG TIMER
Bit
Output(s)Affected
Description/Function
0
1
Type
Power On
7
WD Hard Alarm timer 7
Specify WD Hard Alarm time out waiting time.
RW
0
6
WD Hard Alarm timer 6
Time Out time = WD Hard Alarm timer[7:0] * 290ms
RW
0
5
WD Hard Alarm timer 5
Default is 11*290 = 3.2s
RW
0
4
WD Hard Alarm timer 4
RW
0
3
WD Hard Alarm timer 3
RW
1
2
WD Hard Alarm timer 2
RW
0
1
WD Hard Alarm timer 1
RW
1
0
WD Hard Alarm timer 0
RW
1
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