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ICS97U877 Datasheet(PDF) 1 Page - Integrated Circuit Systems |
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ICS97U877 Datasheet(HTML) 1 Page - Integrated Circuit Systems |
1 / 13 page Integrated Circuit Systems, Inc. ICS97U877 0792A—04/15/04 Block Diagram 1.8V Wide Range Frequency Clock Driver Pin Configuration 40-Pin MLF Recommended Application: • DDR2 Memory Modules / Zero Delay Board Fan Out • Provides complete DDR DIMM logic solution with ICSSSTU32864 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 • Half-period jitter: 60ps • CYCLE - CYCLE jitter 40ps • OUTPUT - OUTPUT skew: 40ps A B 123456 C D E F G H J K VDDQ CLKC2 CLKT2 CLK_INT CLK_INC VDDQ AGND AVDD VDDQ GND CLKC7 CLKT7 VDDQ FB_INT FB_INC FB_OUTC FB_OUTT VDDQ OE OS 1 10 11 20 21 31 30 40 ICS97U877 52-Ball BGA Top View CLKT0 CLKC0 CLKT1 CLKC1 CLKT2 CLKC2 CLKT3 CLKC3 CLKT4 CLKC4 CLKT5 CLKC5 CLKT6 CLKC6 CLKT7 CLKC7 CLKT8 CLKC8 CLKT9 CLKC9 FB_OUTT FB_OUTC AV DD FB_INT CLK_INT CLK_INC FB_INC PLL Powerdown Control and Test Logic OE LD* or OE PLL bypass LD* LD*, OS or OE OS GND 10K-100k * The Logic Detect (LD) powers down the device when a logic low is applied to both CLK_INT and CLK_INC. 12345 6 A CLKT1 CLKT0 CLKC0 CLKC5 CLKT5 CLKT6 B CLKC1 GND GND GND GND CLKC6 C CLKC2 GND NB NB GND CLKC7 D CLKT2 VDDQ VDDQ VDDQ OS CLKT7 E CLK_INT VDDQ NB NB VDDQ FB_INT F CLK_INC VDDQ NB NB OE FB_INC G AGND VDDQ VDDQ VDDQ VDDQ FB_OUTC H AVDD GND NB NB GND FB_OUTT J CLKT3 GND GND GND GND CLKT8 K CLKC3 CLKC4 CLKT4 CLKT9 CLKC9 CLKC8 |
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