參數(shù)資料
型號(hào): SL28647BLCT
廠商: Silicon Laboratories Inc
文件頁數(shù): 12/27頁
文件大?。?/td> 0K
描述: IC CLOCK CK505 DIFF PAIR 72QFN
標(biāo)準(zhǔn)包裝: 2,000
類型: 時(shí)鐘/頻率發(fā)生器,多路復(fù)用器
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: 1:22
差分 - 輸入:輸出: 無/是
頻率 - 最大: 400MHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: 0°C ~ 85°C
安裝類型: *
封裝/外殼: *
供應(yīng)商設(shè)備封裝: *
包裝: *
SL28647
.......................Document #: 001-05103 Rev *B Page 2 of 27
Pin Description
Pin No.
Name
Type
Description
1, 49, 54, 65 VDD_SRC
PWR
3.3V power supply for outputs.
2, 3, 52, 53,
55, 56, 58,
59, 60, 61,
63, 64, 66,
67, 69, 70
SRCT/C[2:9]
O, DIF 100-MHz Differential serial reference clocks.
4, 68
VSS_SRC
GND
Ground for outputs.
5, 6
CPUT2_ITP/SRCT10,
CPUC2_ITP/SRCC10
O, DIF Selectable differential CPU or SRC clock output.
ITP_SEL = 0 @ pin 39 assertion = SRC10
ITP_SEL = 1 @ pin 39 assertion = CPU2
7
VDDA
PWR
3.3V power supply for PLL.
8
VSSA
GND
Ground for PLL.
9
NC
No Connect Pin
10, 11
CPUC1_MCH,
CPUT1_MCH
O, DIF Differential CPU clock output to MCH
12
VDD_CPU
PWR
3.3V power supply for outputs.
13, 14
CPU[T/C]0
O, DIF Differential CPU clock output
15
VSS_CPU
GND
Ground for outputs.
16
SCLK
I
SMBus-compatible SCLOCK.
17
SDATA
I/O, OD SMBus-compatible SDATA.
18
VDD_REF
PWR
3.3V power supply for outputs.
19
XOUT
O, SE 14.318-MHz crystal output.
20
XIN
I
14.318-MHz crystal input.
21
VSS_REF
GND
Ground for outputs.
22
REF1
O
Fixed 14.318-MHz clock output.
23
REF0/FSC_TESTSEL
I/O
Fixed 14.318 clock output/3.3V-tolerant input for CPU frequency
selection/Selects test mode if pulled to VIMFS_C when pin 39 is asserted LOW.
Refer to DC Electrical Specifications table for VILFS_C,VIMFS_C,VIHFS_C specifi-
cations.
24
CPU_STP#
I
3.3V LVTTL input for CPU_STP# active LOW
During direct clock off to M1 mode transition, a serial load of BSEL data is driven
on this pin and sampled on the rising edge of PCI_STP#. See Figure 14.for more
information.
25
PCI_STP#
I
3.3V LVTTL input for PCI_STP# active LOW
During direct clock off to M1 mode transition, a serial load of BSEL data is driven
on CPU_STP# and sampled on the rising edge of this pin. See Figure 14. for more
information.
26, 28, 29,
38, 46, 57,
62, 71, 72
CLKREQ[1:9]#
I
3.3V LVTTL input for enabling assigned SRC clock (active LOW).
27
PCI1
I/O, SE 33MHz clock output
30, 36
VDD_PCI
PWR
3.3V power supply for outputs.
31, 35
VSS_PCI
GND
Ground for outputs.
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