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参数资料
| 型号： | 94201DF |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 200 MHz, PROC SPECIFIC CLOCK GENERATOR, PDSO56 |
| 封装： | 0.300 INCH, ROHS COMPLIANT, SSOP-56 |
| 文件页数： | 2/21页 |
| 文件大小： | 222K |
| 代理商： | 94201DF |
10
ICS94201
0428B - 11/28/05
Byte 21: ICS Reserved Register
Byte 23: Group Skew Control Register
Byte 22: Group Skew Control Register
Note: Default 3V66 to PCI skew is 2.5ns bit [7:4]=1001.
Each increment or decrement of bit 4 to 7 will
introduce 100ps delay or advance on all PCI
clocks.
Byte 24: Output Rise/Fall Time Select Register
Note: This is an unused register. Writing to this register will
not affect device performance or functionality.
Byte 20: Output Dividers Control Register
Note: Changing bits in these registers results in
frequency divider ratio changes. Incorrect
configuration of group gear ratio can cause
system malfunction.
Notes:
1. PWD = Power on Default
2. The power on default for byte 16-20 depends on the hardware
(latch inputs FS[0:4]) or I
2C (Byte 0 bit [1:7]) setting. Be sure
to read back and re-write the values of these 5 registers when
VCO frequency change is desired for the first pass.
3. If Byte 8 bit 7 is driven to "1" meaning programming is
intended, Byte 21-24 will lose their default power up value.
Note: Default 3V66 to IOAPIC skew is 2.5ns bit [3:0]=0111.
Each increment or decrement of bit 4 to 7 will introduce
100ps delay or advance on all IOAPIC clocks.
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