参数资料
型号: ICS94201DFLF
厂商: IDT, Integrated Device Technology Inc
文件页数: 2/19页
文件大小: 0K
描述: IC FREQ GENERATOR PROGR 56-SSOP
标准包装: 26
类型: 时钟/频率发生器,多路复用器
PLL:
主要目的: Intel CPU 服务器
输入: 晶体
输出: 时钟
电路数: 1
比率 - 输入:输出: 2:29
差分 - 输入:输出: 无/无
频率 - 最大: 500.03MHz
电源电压: 3.135 V ~ 3.465 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 56-BSSOP(0.295",7.50mm 宽)
供应商设备封装: 56-SSOP
包装: 管件
其它名称: 94201DFLF
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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