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MPC2104PDG66 Datasheet

  • MPC2104PDG66

  • 256KB/512KB BurstRAM Secondary Cache Modules for PowerPC PRe...

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SEMICONDUCTOR TECHNICAL DATA
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256KB/512KB BurstRAM鈩?/div>
Secondary Cache Modules for
PowerPC鈩?PReP/CHRP Platforms
The MPC2104P (256KB) and MPC2105P (512KB) are designed to provide
burstable, high performance L2 cache for the PowerPC 60x microprocessor family
in conformance with the PowerPC Reference Platform (PReP) and the PowerPC
Common Hardware Reference Platform (CHRP) specifications.
The MPC2104P and MPC2105P utilize synchronous BurstRAMs. The MPC2104P
module is configured as 32K x 64 bits and uses two of the 3.3 V 32K x 32 data RAMs.
The MPC2105P is configured as 64K x 64 bits and uses two of the 3.3 V 64K x 32
data RAMs. Both modules are in a 178 (89 x 2) pin DIMM format. For tag bits on the
2104P, a 5 V cache tag RAM configured as 8K x 14 for tag field plus 8K x 2 for valid
and dirty status bits is used. For tag bits on the 2105P, a 5 V cache tag RAM
configured as 16K x 14 for tag field plus 16K x 2 for valid and dirty status bits is used.
Bursts can be initiated with the ADS signal. Subsequent burst addresses are
generated internally to the BurstRAM by the CNTEN signal.
Write cycles are internally self鈥搕imed and are initiated by the rising edge of the clock
(CLKx) inputs. Writes are global with two inputs for reduced loading.
Presence detect pins are available for auto configuration of the cache control.
The module family pinout will support 5 V and 3.3 V components for a clear path
to lower voltage and power savings. Both power supplies must be connected.
All of these cache modules are plug and pin compatible with each other.
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PowerPC鈥揝tyle Burst Counter On Chip
Pipeline Data I/O
Plug and Pin Compatibility
Multiple Clock Pins for Reduced Loading
All Cache Data and Tag I/Os are LVTTL (3.3 V) Compatible
Three State Outputs
Buffered Addresses to Data RAMs for Reduced Loading
Fast Module Clock Rates: Up to 66 MHz
Fast SRAM Access Times: 9 ns for Tag RAM Match
8 ns for Data RAM
Decoupling Capacitors for Each Fast Static RAM
High Quality Multi鈥揕ayer FR4 PWB With Separate Power and Ground Planes
178 Pin Card Edge Module
Burndy Connector, Part Number: ELF178KSC鈥?Z50
MPC2104P
MPC2105P
BurstRAM is a trademark of Motorola.
The PowerPC name is a trademark of IBM Corp., used under license therefrom.
This document contains information on a new product under development. Motorola reserves the right to change or discontinue this product without notice.
REV 2
12/20/96
漏
Motorola, Inc. 1996
MOTOROLA FAST SRAM
MPC2104P鈥PC2105P
1

MPC2104PDG66相關(guān)型號(hào)PDF文件下載

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