cy28551-3 Cypress Semiconductor Corporation., cy28551-3 Datasheet - Page 2

• Manufacturer Part Number: cy28551-3
• Description: Universal Clock Generator For Intel, Via And Sis
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 001-05677 Rev. *D
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
Pin No.
*SEL0/PCI5
VDD48
**SEL24_48#/24_4
8M
**SEL1/48MHz
VSS48
VDDDOT
LINK0/DOT96T/SA
TAT
LINK1/DOT96C/SA
TAC
VSSDOT
VDDSATA
PCIEXT0/SATAT
PCIEXC0/SATAC/
VSSSATA
VSS
PCIEXT2
PCIEXC2
VDDPCIE
PCIEXT3
PCIEXC3
VSSPCIE
PCIEXT4
PCIEXC4
VDDPCIE
PCIEXC5
PCIEXT5
PCIEXC6/PCI_ST
OP#
PCIEXT6/CPU_ST
OP#
VSSPCIE
VDDA
Name
I/O, DIF 3.3V-tolerant input for stopping PCI and SRC outputs/Complement 100-MHz Differ-
I/O, DIF 3.3V-tolerant input for stopping CPU outputs/True 100-MHz Differential serial
I/O, PU 3.3V-tolerant input for output selection/33-MHz clock output. Refer to Figure 1 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/48-MHz clock output. Refer to Figure 1 for
SE/DiF
SE/DiF
O, DIF True differential SRC clock output/True differential SATA SRC clock output. Intel
O, DIF Complement differential SRC clock output/Complement differential SATA SRC clock
O, DIF True 100-MHz Differential Serial reference clock. Intel type SR output buffer
O, DIF Complement 100-MHz Differential Serial reference clock. Intel type SR output buffer
O, DIF True 100-MHz Differential Serial reference clock. Intel type SR output buffer
O, DIF Complement 100-MHz Differential Serial reference clock. Intel type SR output buffer
O, DIF True 100-MHz Differential Serial reference clock. Intel type SR output buffer
O, DIF Complement 100-MHz Differential Serial reference clock. Intel type SR output buffer
O, DIF Complement 100-MHz Differential Serial reference clock. Intel type SR output buffer
O, DIF True100-MHz Differential Serial reference clock. 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 PLL.
GND
GND
GND
GND
GND
GND
Type
O,
O,
selection options.
Internal 150k pull-up
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 True clock and 100-MHz differential
True clock. The output was selected by SEL[0:1]
Link output for VIA and SIS, Differential 96-MHz Complement clock output and
100-MHz differential Complement clock. The output was selected by SEL[0:1]
Ground for outputs
type SR output buffer
output. Intel type SR output buffer
Ground for outputs
Ground for outputs
Ground for outputs.
ential serial reference clocks.
The two multifunction pins are selected by MODE. Default PCIEX6. Intel type SR
output buffer
reference clocks.
The two multifunction pins are selected by MODE. Default PCIEX6. Intel type SR
output buffer
Ground for outputs.
Description
CY28551-3
Page 2 of 29
[+] Feedback