PI6C410
Clock Generator for Intel PCI-Express Desktop Chipset
Product Features
Product Description
• 14.318 MHz Crystal Input
PI6C410 is a high-speed, low-noise clock generator designed to
work with Intel Desktop PCI-Express Chipset.
Spread Spectrum PLL based clock generator reduce EMI emis-
sion and support a wide range of frequencies.
• Selectable of 100, 133, 166, 200, 266, 333, and 400MHz CPU
Output Frequencies
• SMBus: Power Management Control
• Spread Spectrum support (-0.5% down spread)
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
• Packaging (Pb-free & Green available):
-56-Pin SSOP (V)
-56-Pin TSSOP (A)
Output Features
Skew Performance
• Two Pairs of Differential CPU Clocks
• One selectable of CPU/SRC Clock
• Six Pairs of SRC Clocks
• Nine PCI Clocks
• < 100ps Output to output CPU clock skew
• < 500ps Output to output PCI clock skew
• < 250ps Output to output SRC clock skew
• One 48 MHz USB clock
• One REF clock
• One 96 MHz Differential clock
Pin Description
Logic Block Diagram
DOT_96
DOT 96#
XTAL_IN
XTAL
OSC
PLL 2
VDD_PCI
VSS_PCI
PCI_3
PCI_4
PCI_5
1
2
3
4
5
6
7
8
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
PCI_2
PCI_1
PCI_0
FS_C / TEST_SEL
REF
VSS_REF
XTAL_IN
XTAL_OUT
VDD_REF
SDA
SCL
VSS_CPU
CPU_0
XTAL_OUT
USB_48
REF
/2
PLL 1
VSS_PCI
VDD_PCI
PCIF_0 / ITP_EN
PCIF_1
PCI [0:5]
PCIF[0:2]
Div
SDA
SCL
SMBus
Logic
9
PCIF_2
VDD_48
USB_48
VSS_48
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
SRC [1:6]
SRC [1:6]#
Div
Div
FS_A
C
O
N
T
R
O
L
DOT_96
CPU_0#
VDD_CPU
CPU_1
CPU_1#
IREF
DOT_96#
FS_B / TEST_MODE
VTT_PWRGD# / PWRDWN
FS_A
CPU2_ITP / SRC7
CPU2_ITP# / SRC7#
FS_B / TEST_MODE
FS_C / TEST_SEL
CPU[0:1]
CPU[0:1]#
SRC_1
SRC_1#
VDD_SRC
SRC_2
SRC_2#
SRC_3
SRC_3#
SRC_4
SRC_4#
VSS_A
VDD_A
VTT_PWRGD#
/ PWRDWN
CPU2_ITP / SRC7
CPU2_ITP# / SRC7#
VDD_SRC
SRC_6
SRC_6#
SRC_5
PCIF_0 / ITP_EN
SRC_5#
VSS_SRC
VDD_SRC
PS8734A
09/02/04
1