ICS9LRS4103 Datasheet, PDF (1/15 Pages) Integrated Device Technology – 32-pin CK505 for Intel Systems

DATASHEET
32-pin CK505 for Intel Systems
ICS9LRS4103
Recommended Application:
CK505 clock, 32-pin for 5 series Intel chipsets
Output Features:
• 1 - CPU differential low power push-pull pairs
• 1 - SRC differential low power push-pull pairs
• 1 - Selectable 120MHz CK_SSC_Disp or 100 MHz SRC low
power push-pull pair
• 1 - SATA/SRC selectable differential low power push-pull pair
• 1 - DOT differential low power push-pull pair
• 1 - REF, 14.318MHz
Features/Benefits:
• Supports spread spectrum modulation, default is 0.5%
down spread
• Uses external 14.318MHz crystal, external crystal load
caps are required for frequency tuning
• Does not require external pass transistor for voltage
regulator
• Integrated 33Ω series resistors on differential outputs,
Zo=50Ω
Key Specifications:
• CPU outputs cycle-cycle jitter < 85ps
• SRC output cycle-cycle jitter < 125ps
• +/- 100ppm frequency accuracy on all outputs
• SRC are PCIe Gen2 compliant
Table 1: CPU Frequency Select Table
FSLC
B0b7
0 (Default)
1
CPU
MHz
133.33
100.00
SRC
MHz
100.00
REF DOT
MHz MHz
14.318 96.00
1. FS_LC is a low-threshold input.Please see V_{IL_FS} and V_{IH_FS} specifications in
the Input/Supply/Common Output Parameters Table for correct values.
Also refer to the Test Clarification Table.
SEL_120M#
Pin# 21
Pulled Low
Pulled High
Pin# 10/11
120MHz
100MHz
SEL_SATA_NS#
Pin# 31
Pin# 14/15
0
100MHz_nonSS
1
100MHz_SS
Pin Configuration
X1 ₁
X2 2
SMBCLK_3.3 ₃
SMBDAT_3.3 4
VDD96 5
DOT96T ₆
DOT96C ₇
GND96 8
32 31 30 29 28 27 26 25
9LRS4103
9 10 11 12 13 14 15 16
24 ^CPUC0
23 CPUT0
22 ^GNDCPU
21 SEL_120M#
20 VDDSRC
19 ^SRC2C
18 ^SRC2T
17 GNDSRC
IDT^® PC MAIN CLOCK
** Internal Pull-Down Resistor
1520A—03/16/10
1