ICS97U2A877A Datasheet, PDF (1/14 Pages) Integrated Circuit Systems – 1.8V Low-Power Wide-Range Frequency Clock Driver

Integrated
Circuit
Systems, Inc.
ICS97U2A8 77A
Advance Information
1.8V Low-Power Wide-Range Frequency Clock Driver
Recommended Application:
• DDR2 Memory Modules / Zero Delay Board Fan Out
• Provides complete DDR DIMM logic solution with
ICSSSTU32864/SSTUF32864/SSTUF32866/
SSTUA32864/SSTUA32866/SSTUA32S868/
SSTUA32S865/SSTUA32S869
Product Description/Features:
• Low skew, low jitter PLL clock driver
• 1 to 10 differential clock distribution (SSTL_18)
• Feedback pins for input to output synchronization
• Spread Spectrum tolerant inputs
• Auto PD when input signal is at a certain logic state
Switching Characteristics:
• Period jitter: 40ps (DDR2-400/533)
30ps (DDR2-667/800)
• Half-period jitter: 60ps (DDR2-400/533)
50ps (DDR2-667/800)
• OUTPUT - OUTPUT skew: 40ps (DDR2-400/533)
30ps (DDR2-667/800)
• CYCLE - CYCLE jitter 40ps
Block Diagram
Pin Configuration
123456
A
B
C
D
E
F
G
H
J
K
52-Ball BGA
Top View
1
A CLKT1
B CLKC1
C CLKC2
D CLKT2
E CLK_INT
F CLK_INC
G AGND
H AVDD
J CLKT3
K CLKC3
2
CLKT0
GND
GND
VDDQ
VDDQ
VDDQ
VDDQ
GND
GND
CLKC4
3
CLKC0
GND
NB
VDDQ
NB
NB
VDDQ
NB
GND
CLKT4
4
CLKC5
GND
NB
VDDQ
NB
NB
VDDQ
NB
GND
CLKT9
5
CLKT5
G ND
G ND
OS
VDDQ
OE
VDDQ
G ND
G ND
CLKC9
6
CLKT6
CLKC6
CLKC7
CLKT7
FB_INT
FB_INC
FB_OUTC
FB_OUTT
CLKT8
CLKC8
OE
OS
AV_DD
Powerdown
Control and
Test Logic
LD* or OE
LD*, OS or OE
LD*
PLL bypass
CLK_INT
CLK_INC
10K-100k
PLL
GND
FB_INT
FB_INC
* The Logic Detect (LD) powers down the device when a
logic low is applied to both CLK_INT and CLK_INC.
CLKT0
CLKC0
CLKT1
CLKC1
CLKT2
CLKC2
CLKT3
CLKC3
CLKT4
CLKC4
CLKT5
CLKC5
CLKT6
CLKC6
CLKT7
CLKC7
CLKT8
CLKC8
CLKT9
CLKC9
FB_OUTT
FB_OUTC
VDDQ 1
CLKC2
CLKT2
CLK_INT
CLK_INC
VDDQ
AGND
AVDD
VDDQ
GND 10
40
31
ICS97U2A877A
30 _CLKC7
CLKT7
VDDQ
FB_INT
FB_INC
FB_OUTC
FB_OUTT
VDDQ
OE
21 OS
11
20
40-Pin MLF
1180—11/14/05
ADVANCE INFORMATION documents contain information on products in the formative or design phase development. Characteristic data and other specifications are design goals.
ICS reserves the right to change or discontinue these products without notice. Third party brands and names are the property of their respective owners.