ICSSSTUB32871A

www.DataSheet4U.com Integrated Circuit Systems, Inc. ICSSSTUB32871A 27-Bit Registered Buffer for DDR2 Recommended Application: DDR2 Memory Modules Provides complete DDR DIMM solution with ICS98ULPA877A, ICS97ULP877, or IDTCSPUA877A Optimized for DDR2 400/533/667 JEDEC 4 Rank VLP DIMMS Product Features: 27-bit 1:1 registered buffer with parity check functionality Supports SSTL_18 JEDEC specification on data inputs and outputs Supports LVCMOS switching levels on RESET input 50% more dynamic driver strength than standard SSTU32864 Low voltage operation VDD = 1.7V to 1.9V Available in 96 BGA package Pin Configuration 1 A B C D E F G H J K L M N P R T 2 3 4 5 6 96 Ball BGA (Top View) Functionality Truth Table In puts RESET H H H H H H H H H H H H H H H L DCS0 L L L L L L H H H H H H H H H X or floating DCS1 L L L H H H L L L H H H H H H X or floating CSGate Enable X X X X X X X X X L L L H H H X or floating CK ↑ ↑ L or H ↑ ↑ L or H ↑ ↑ L or H ↑ ↑ L or H ↑ ↑ L or H X or floating CK ↓ ↓ L or H ↓ ↓ L or H ↓ ↓ L or H ↓ ↓ L or H ↓ ↓ L or H X or floating Dn, DODTn, DCK En L H X L H X L H X L H X L H X X or floating Qn L H Q0 L H Q0 L H Q0 L H Q0 Q0 Q0 Q0 L Outputs QCS L L Q0 L L Q0 H H Q0 H H Q0 H H Q0 L QODT, QCKE L H Q0 L H Q0 L H Q0 L H Q0 L H Q0 L 1186G—04/16/07 ICSSSTUB32871A Ball Assignments 27 bit 1:1 Register A DCKE0 D0 B DCKE1 D1 C D2 E D3 F D5 H CK J CK K D7 L D9 DODT1 V REF GND V DD V DD GND V DD GND V DD GND V DD GND V DD GND V DD GND V DD GND V DD...