參數(shù)資料
型號: IBM32NPR101EPXCAC133
英文描述: Microprocessor
中文描述: 微處理器
文件頁數(shù): 77/131頁
文件大?。?/td> 1679K
代理商: IBM32NPR101EPXCAC133
PRS28.4G
IBM Packet Routing Switch
prs28.03.fm
August 31, 2000
Internal Registers
Page 77 of 131
5.2.21 Table Data Register
5.2.21.1 Table Select = ‘0’b (Memory Row Data)
5.2.21.2 Table Select = ‘1’b (Look-Up Table)
Note: Each Read/Write access to this register causes the value in the Memory Row Byte Pointer or Look-Up
Table fields of Table Pointer Register to be incremented by 2.
Upper Byte
Lower Byte
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
Reserved
Upper Entry
Reserved
Lower Entry
0
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15
Reset Value
0
OCM Address
15‘x’
Access Type
Read/Write
Bits
Description
When Table Select = '0'b (Memory Row Data)
0 - 7
Upper Byte
. Carries the data byte value of the Memory Row Register byte with the index corresponding to the
Row Pointer field value.
8 - 15
Lower Byte
. Carries the data byte value of the Memory Row Register byte with the index corresponding to the
Row Pointer field value + 1.
When Table Select = '1'b (Look-Up Table)
0 - 3
Reserved
.
4 - 7
Upper Entry
. Carries the Look-Up Table entry with the index corresponding to the Look-Up Pointer field value.
8 - 11
Reserved
.
12 - 15
Lower Entry
. Carries the Look-Up Table entry with the index corresponding to the Look-Up Pointer field value
+ 1.
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