CY28551LFXC Silicon Laboratories Inc, CY28551LFXC Datasheet - Page 2

• Manufacturer Part Number: CY28551LFXC
• Description: Clock Generators & Support Products Universal System Clk Intel AMD SiS Via
• Manufacturer: Silicon Laboratories Inc

Specifications of CY28551LFXC

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev 1.1, Faburary 1, 2008
Pin Description
1
2
3
4
5
6
7,8
9
10
11,12
13
14,15
16
17,18
19
20,21
22
23,24
25
26,27,28,29
30
31,32
33
34,35
36
37
38
39
40,41
42
43, 44
Pin No.
PCI6_F
VDD48
**SEL24_48#/24_4
8M
**SEL1/48MHz
VSS48
VDDDOT
LINK0/DOT96T/SA
TAT
LINK1/DOT96C/SA
TAC
VSSDOT
VDDSATA
PCIEX0[T/C]/SATA
[T/C]
VSSSATA
PCIEX[T/C]1
VSSPCIE
PCIEX[T/C]2
VDDPCIE
PCIEX[T/C]3
VSSPCIE
PCIEX[T/C]4
VDDPCIE
PCIEX[T/C][5:6]
VSSPCIE
PCIEX[T/C]7
VDDPCIE
PCIEXT8/CPU_ST
OP#
PCIEXC8/PCI_ST
OP#
VDDA
VSSA
**DOC2
VSSCPU
CPU[T/C]1
VDDCPU
CPU[T/C]0
Name
I/O, DIF 3.3V-tolerant input for stopping PCI and SRC outputs/3.3V-tolerant input for
I/O, PD 3.3V tolerant input for 24 MHz, 48 MHz selection/24_48MHz clock output. Internal
I/O, PD 3.3V tolerant input for output selection/48MHz clock output. Refer to Table 1 for
SE/DiF
O, DIF Differential SRC clock output/Differential SATA SRC clock output
O, DIF 100 MHz Differential serial reference clock. Intel Type-SR output buffer
O, DIF 100 MHz Differential serial reference clock. Intel Type-SR output buffer
O, DIF 100 MHz Differential serial reference clock. Intel Type-SR output buffer
O, DIF 100 MHz Differential serial reference clock. Intel Type-SR output buffer
O, DIF 100 MHz Differential Serial reference clock. Intel Type-SR output buffer
O, DIF 100 MHz Differential Serial reference clock. Intel Type-SR output buffer
O, DIF Differential CPU clock output. Intel Type-SR output buffer.
O, DIF Differential CPU clock output. Intel Type-SR output buffer.
PWR 3.3V power supply for outputs.
PWR 3.3V Power supply for outputs
PWR 3.3V Power supply for outputs
PWR 3.3V power supply for outputs.
PWR 3.3V power supply for outputs
PWR 3.3V power supply for outputs
PWR 3.3V Power supply for PLL.
PWR 3.3V Power supply for outputs+
GND
GND
GND
GND
GND
GND
GND
I, PD
GND
Type
O,
O
Free running 33 MHz clock output.
Intel Type-3A output buffer
150k pull down
1 = 24 MHz, 0 = 48 MHz
Intel Type-3A output buffer
selection options
Internal 150k pull down
Ground for outputs
Link output for VIA and SIS, differential 96 MHz clock output and 100 MHz differential
clock. The output is selected by SEL[1:0]
Ground for outputs
Intel Type-SR output buffer
Ground for outputs
Ground for outputs
Ground for outputs
Ground for outputs
stopping CPU outputs/100-MHz Differential serial reference clocks.
The two multifunction pins are selected by MODE. Default PCIEX8
Intel Type-SR output buffer
Ground for PLL.
Dynamic Over Clocking pin
0 = normal, 1 = Frequency will be changed depend on DOC register. Internal 150k
pull-down.
Ground for outputs.
Description
CY28551
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