參數(shù)資料
型號: CY28378OXCT
廠商: Silicon Laboratories Inc
文件頁數(shù): 5/21頁
文件大小: 0K
描述: IC CLOCK CK408/TITAN 845 48SSOP
標(biāo)準(zhǔn)包裝: 1,000
類型: 時鐘/頻率發(fā)生器
PLL:
主要目的: Intel CPU 服務(wù)器
輸入: 晶體
輸出: HCSL,LVCMOS
電路數(shù): 1
比率 - 輸入:輸出: 1:21
差分 - 輸入:輸出: 無/是
頻率 - 最大: 203MHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 48-BSSOP(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 48-SSOP
包裝: 帶卷 (TR)
CY28378
...................... Document #: 38-07519 Rev. ** Page 13 of 21
PD# – Deassertion
After the clock chip internal PLL is powered up and locked, all
outputs will be enabled within a few clock cycles of each other,
with the first to last active clock taking no more than two full
PCI clock cycles.
Tdrive_PWRDN#
<300
s, >200mV
REF, 14.131818
PWRDWN#
CPUC, 133MHz
CPUT, 133MHz
AGP, 66MHz
USB, 48MHz
PCI, 33MHz
Tstable
<1.8ms
Figure 3. Power-down Deassertion Timing Waveforms
Table 9. PWRDWN# Functionality
PWRDWN#
CPUT
CPUC
3V66
PCI_F/PCI
48MHz
1
Normal
66MHz
3V66/2
48M
0
Iref x2
Float
Low
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