ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 47

• Manufacturer Part Number: ibm3206k0424
• Description: Ibm Processor For Network Resources
• Manufacturer: ETC-unknow

Preliminary
Possible Memory Configurations Using SDRAM With Shared ECC
Possible Memory Configurations Using SRAM
pnr25.chapt02.01
August 14, 2000
Note: While it is possible to connect more than five SDRAM modules to each controller on the IBM3206K0424, it is likely the capacitive
loading will not allow the interface to work at 7.5ns. The memory interface would need to be slowed down to allow the interface to work.
1. For x18 SRAM modules, half the data bus goes to one module, and the other half goes to a second module. The chip select to the
2. While it is possible with the number of chip selects available (multiplexed or not) to connect more than four SRAM modules to
two modules is common. Therefore, two x18 modules can be connected to a single chip select while only one x32 module can.
Therefore, given a constant number of chip selects, using pairs of x18 "x" Mb modules results in a memory that is twice as deep
as what is possible with x32 modules. Using x18 modules also lowers the overall capacitance on the memory data nets.
each controller on the IBM3206K0424, it is likely the capacitive loading will not allow the interface to work at 7.5ns. The memory
interface would need to be slowed down to allow the interface to work.
Module Size
Module Size
512Kx18
256Kx18
512Kx36
256Kx36
128Kx36
16Mx16
1Mx16
4Mx16
32Mx8
2Mx18
1Mx18
1Mx36
2Mx8
8Mx8
Memory Size for One Module
Storage Size
128MB
16MB
32MB
64MB
4MB
8MB
4MB
2MB
1MB
N/A
N/A
N/A
N/A
N/A
One Array plus ECC
Number of Devices
Memory Size for Two Modules
3
5
3
5
3
5
8MB
4MB
2MB
1MB
8MB
4MB
2MB
1MB
IBM Processor for Network Resources
Storage Size
128MB
32MB
8MB
Two Arrays plus ECC
Memory Size for Four Modules
DRAM Memory Bus Interface
Number of Devices
16MB
16MB
8MB
4MB
2MB
8MB
4MB
2MB
IBM3206K0424
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