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參數(shù)資料
| 型號： | CY28551LFXCT |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 22/28頁 |
| 文件大小： | 0K |
| 描述： | IC CLOCK INTEL/AMD SIS VIA 64QFN |
| 標(biāo)準(zhǔn)包裝： | 2,000 |
| 類型： | 時鐘/頻率發(fā)生器 |
| PLL： | 是 |
| 主要目的： | Intel CPU，AMD CPU |
| 輸入： | 晶體 |
| 輸出： | HCSL，LVCMOS |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:23 |
| 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： | 表面貼裝 |
| 封裝/外殼： | 64-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 64-QFN（9x9） |
| 包裝： | 帶卷 (TR) |
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CY28551
......................Document #: 001-05675 Rev. *C Page 3 of 28
45
VTT_PWRGD#/PD
I
3.3V LVTTL input. This pin is a level-sensitive strobe used to latch the HW strapping
pin inputs. After asserting VTT_PWRGD# (active LOW), this pin becomes a
real-time input for asserting power-down (active HIGH).
46
SDATA
I/O
SMBus compatible SDATA
47
SCLK
I
SMBus compatible SCLOCK.
48
VDDREF
PWR
3.3V Power supply for outputs
49
XOUT
O
14.318 MHz Crystal Output
50
XIN
I
14.318 MHz Crystal Input
51
VSSREF
GND
Ground for outputs
52
REF2
O, SE 14.318 MHz REF clock output.
Intel Type-5 output buffer
53
**FSC/REF1
I/O,PD,
SE
3.3V tolerant input for CPU frequency selection/14.318 MHz REF clock output
Internal 150k pull down
Intel Type-5 output buffer
Refer to DC Electrical Specifications table for Vil_FS and Vih_FS specifications
54
**FSD/REF0
I/O,PD,
SE
3.3V tolerant input for CPU frequency selection/14.318 MHz REF clock output
Internal 150k pull down
Intel Type-5 output buffer
Refer to DC Electrical Specifications table for Vil_FS and Vih_FS specifications
55
RESET_I#/SRESE
T#
I/O, OD 3.3V tolerant input for reset all of registers to default setting
3.3V LVTTL output for watchdog reset signal
56
**DOC1
I, PD
Dynamic Over Clocking pin
0 = normal; 1 = Frequency will be changed depend on DOC register. Internal 150k
pull-down
57
PCI0/**CLKREQ#B I/O,SE,
PD
33 MHz clock output/Output enable control for PCIEX4; 5 via I2C register
Default is PCI0
0 = Selected PCIEXs are enabled, 1 = Selected PCIEXs are disabled. Internal 150k
pull down
Intel Type-3A output buffer
58
PCI1/**CLKREQ#A I/O,SE,
PD
33 MHz clock output/Output enable control for PCIEX6, 7via I2C register. Default is
PCI1
0 = Selected PCIEXs are enabled, 1 = Selected PCIEXs are disabled. Internal 150k
pull down
Intel Type-3A output buffer
59
VSSPCI
GND
Ground for outputs.
60
**FSA/PCI2
I/O, PD 3.3V tolerant input for CPU frequency selection/33 MHz clock output. Internal 150k
pull down
Intel Type-3A output buffer
Refer to DC Electrical Specifications table for Vil_FS and Vih_FS specifications
61
*FSB/PCI3
I/O, PU 3.3V tolerant input for CPU frequency selection/33 MHz clock output. Internal 150k
pull up
Intel Type-3A output buffer
Refer to DC Electrical Specifications table for Vil_FS and Vih_FS specifications
62
VDDPCI
PWR
3.3V power supply for outputs.
63
*SELP4_K8/PCI3
I/O, PU 3.3V tolerant input for CPU clock output buffer type selection/33 MHz clock output.
Internal 150k pull up
Intel Type-3A output buffer
Refer to DC Electrical Specifications table for Vil_FS and Vih_FS specifications
0 = K8 CPU buffer type, 1 = P4 CPU buffer type.
64
*SEL0/PCI5
I/O, PU 3.3V tolerant input for output selection/33 MHz clock output. Refer to Table 1 for
selection options.
Internal 150k pull up
Pin Description (continued)
Pin No.
Name
Type
Description
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CY2862-000 | 制造商:TE Connectivity 功能描述:82A0111-4-9-G110 |
| CY2863-000 | 制造商:TE Connectivity 功能描述:82A0111-8-9-G110 - Bulk |
| CY28800 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:100-MHz Differential Buffer for PCI Express and SATA |
| CY28800OXC | 功能描述:時鐘緩沖器 PCI Express & Sata Diff Buffer 100MHz RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲（最大值）: 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel |
| CY28800OXCT | 功能描述:時鐘緩沖器 PCI Express & Sata Diff Buffer 100MHz RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲（最大值）: 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel |
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