ICS932S422C Datasheet, PDF (1/21 Pages) Integrated Circuit Systems – PCIe Gen 2 main Clock for Intel-based Servers

Integrated
Circuit
Systems, Inc.
ICS932S422C
PCIe Gen 2 main Clock for Intel-based Servers
Recommended Application:
PCIe Gen 2 & FBD compliant CK410B/CK410B+ clock for
Intel-based servers
Output Features:
• 5 - 0.7V current-mode differential CPU pairs
• 4 - 0.7V current-mode differential SRC pair
• 4 - PCI (33MHz)
• 3 - PCICLK_F, (33MHz) free-running
• 1 - 48MHz
• 2 - REF, 14.318MHz
Key Specifications:
• CPU cycle-cycle jitter: < 50ps
• SRC cycle-cycle jitter: < 125ps
• PCI cycle-cycle jitter: < 500ps
• CPU output skew: < 100ps
• SRC output skew: < 250ps
• ± 300ppm frequency accuracy on all outputs except
48MHz
• ± 100ppm frequency accuracy on 48MHz
Features/Benefits:
• Supports spread spectrum modulation, 0 to -0.5%
down spread
• Uses external 14.318MHz crystal and external load
capacitors for low ppm synthesis error
• CPU clocks independent of SRC/PCI clocks
• D2/D3 SMBus address
• Compliant with PCIe Gen II phase noise specifications
Functionality
FSLC¹
0
0
0
0
1
1
1
1
FSLB¹
0
0
1
1
0
0
1
1
FSLA²
0
1
0
1
0
1
0
1
CPU
MHz
266.67
133.33
200.00
166.67
333.33
100.00
400.00
SRC
MHz
100.00
100.00
100.00
100.00
100.00
100.00
100.00
PCI
MHz
33.33
33.33
33.33
33.33
33.33
33.33
33.33
Reserved
REF
MHz
14.318
14.318
14.318
14.318
14.318
14.318
14.318
USB
MHz
48.000
48.000
48.000
48.000
48.000
48.000
48.000
1. FSLB and FSLC are three-level inputs. Please see VIL_FS and VIH_FS
specifications in the Input/Supply/Common Output Parameters Table for
correct values. Also refer to the Test Clarification Table.
2.FSLA is a low-threshold input. Please see the VIL_FS and VIH_FS
specifications in the Input/Supply/Common Output Parameters Table for correct values.
1412A—12/10/07
Pin Configuration
VDDPCI 1
GNDPCI 2
PCICLK0 3
PCICLK1 4
PCICLK2 5
PCICLK3 6
GNDPCI 7
VDDPCI 8
PCICLK_F0 9
PCICLK_F1 10
PCICLK_F2 11
VDD48 12
48MHz 13
GND48 14
VDDSRC 15
NC 16
Vtt_PwrGd#/PD 17
SRCCLKC1 18
SRCCLKT1 19
GNDSRC 20
SRCCLKT2 21
SRCCLKC2 22
SRCCLKC3 23
SRCCLKT3 24
VDDSRC 25
SRCCLKT4 26
SRCCLKC4 27
VDDSRC 28
56 FSLC/TEST_SEL
55 REF0
54 REF1
53 VDDREF
52 X1
51 X2
50 GNDREF
49 FSLB/TEST_MODE
48 FSLA
47 VDDCPU
46 CPUCLKT0
45 CPUCLKC0
44 VDDCPU
43 CPUCLKT1
42 CPUCLKC1
41 GNDCPU
40 CPUCLKT2
39 CPUCLKC2
38 VDDCPU
37 CPUCLKT3
36 CPUCLKC3
35 VDDA
34 GNDA
33 IREF
32 CPUCLKT4
31 CPUCLKC4
30 SDATA
29 SCLK
56-pin SSOP & TSSOP