参数资料
型号: IBM25403GCX-3JC76C2
元件分类: 微控制器/微处理器
英文描述: RISC PROCESSOR, PQFP16
封装: PLASTIC, QFP-160
文件页数: 46/54页
文件大小: 541K
代理商: IBM25403GCX-3JC76C2
IBM PowerPC 403GCX
50
External Master Nonburst DRAM Read with HoldReq/HoldAck
Bank Register Bit Settings
Notes:
1. XReq, XSize0, XSize1, and XAck are multiplexed with DMAR3, EOT3/TC3, OE, and DMAA3, respectively.
2. A4, A5, A30, and A31 are multiplexed with WBE0, WBE1, WBE2, and WBE3, respectively.
SLF
ERM
Bus
Width
Ext
Mux
RAS-to-
CAS
Refresh
Mode
Page
Mode
First
Access
Burst
Access
Prechg
Cycles
Refresh
RAS
Refresh
Rate
Bit 13 Bit 14 Bits 15:16 Bit 17
Bit 18
Bit 19
Bit 20 Bits 21:22 Bits 23:24
Bit 25
Bit 26
Bits 27:30
0 or 1
0
10
1
0
01
xx
0
x
xxxx
SysClk
R/W
RASx
CAS0:3
DRAMOE
DRAMWE
D0:31
1
2
3
4
5
6
7
8
9
10
11
12
AMuxCAS
RAS
CAS
Pre-
Charge
CAS
HoldReq
HoldAck
XSize0:11
XReq
BSel
Ext Bus Master
DRAM Control
10
Valid Address - Ext Master
403 Address
403 Data
HiZ
403 Master
DRAM
drives bus
A4:312
XReq1
XAck1
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