PI6C410B Datasheet, PDF (1/15 Pages) Pericom Semiconductor Corporation – Clock Generator for Intel PCI-Express Server Chipset

PI6C410B
Clock Generator for Intel
PCI-Express Server Chipset
Features
• 14.318 MHz Crystal Input
• Selectable of 100, 133, 166, 200, 266, 333, and 400 MHz
CPU Output Frequencies
• SMBus: Power Management Control
• Spread Spectrum support (-0.5% down spread)
• Packaging (Pb-free & Green):
—56-Pin SSOP (V)
—56-Pin TSSOP (A)
Output Features
• Four Pairs of Differential CPU Clocks
• Five Pairs of SRC Clocks
• Seven PCI Clocks
• One 48 MHz USB clock
• Two REF clocks
Description
PI6C410B is a high-speed, low-noise clock generator designed to
work with Intel Server PCI-Express Chipset. The Spread Spectrum
PLL based clock generator reduces EMI emission and supports a
wide range of frequencies.
Jitter Performance
• < 85ps Cycle-to-Cycle CPU clock jitter
• < 350ps Cycle-to-Cycle 48MHz clock jitter
• < 500ps Cycle-to-Cycle PCI clock jitter
• < 125ps Cycle-to-Cycle SRC clock jitter
• < 1000ps Cycle-to-Cycle REF clock jitter
Skew Performance
• < 100ps Output to output CPU clock skew
• < 500ps Output to output PCI clock skew
• < 250ps Output to output SRC clock skew
Block Diagram
XT AL_IN
XT AL_OUT
XT AL
OSC
SDA
SCL
PLL 1
SM Bus
Logic
FS_A
FS_B/TEST_MODE
FS_C/TEST_SEL
VTT_PWRGD#
/PWRDWN
IREF
PLL 2
DIV
DIV
DIV
Pin Configuration
USB_48
REF [0:1]
PCI [0:3]
PCIF [0:2]
SRC [0:4]
SRC [0:4]#
CPU [0:3]
CPU [0:3]#
VDD_PCI 1
VSS_PCI 2
PCI_0 3
PCI_1 4
PCI_2 5
PCI_3 6
VSS_PCI 7
VDD_PCI 8
PCIF_0 9
PCIF_1 10
PCIF_2 11
VDD_48 12
USB_48 13
VSS_48 14
VDD_SRC 15
SRC_0 16
SRC_0# 17
SRC_1# 18
SRC_1 19
VSS_SRC 20
SRC_2 21
SRC_2# 22
SRC_3# 23
SRC_3 24
VDD_SRC 25
SRC_4 26
SRC_4# 27
VDD_SRC 28
56 FS_C / TEST_SEL
55 REF_0
54 REF_1
53 VDD_REF
52 XTAL_IN�
51 XTAL_OUT
50 VSS_REF
49 FS_B/TEST_MODE
48 FS_A
47 VDD_CPU
46 CPU_0
45 CPU_0#
44 VDD_CPU
43 CPU_1
42 CPU_1#
41 VSS_CPU
40 CPU_2
39 CPU_2#
38 VDD_CPU
37 CPU_3
36 CPU_3#
35 VDD_A
34 VSS_A
33 IREF
32 NC
31 VTT_PWRGD# / PWRDWN
30 SDA
29 SCL
1
PS8811A
02/01/06