參數(shù)資料
型號(hào): W925E240
英文描述: Telephone Controller
中文描述: 電話控制器
文件頁(yè)數(shù): 14/66頁(yè)
文件大?。?/td> 930K
代理商: W925E240
W925E/C240
8-bit CID Microcontroller
(initial=00H)
Revision : A6
-14-
Release Date : 2002/7/2
DATA POINTER LOW
Bit:
7
6
5
4
3
2
1
0
DPL.7
DPL.6
DPL.5
DPL.4
DPL.3
DPL.2
DPL.1
DPL.0
Mnemonic: DPL
Address: 82h
DPL: This is the low byte of the standard 8052 16-bit data pointer.
DATA POINTER HIGH
(initial=00H)
Bit:
7
6
5
4
3
2
1
0
DPH.7
DPH.6
DPH.5
DPH.4
DPH.3
DPH.2
DPH.1
DPH.0
Mnemonic: DPH
Address: 83h
DPH: This is the high byte of the standard 8052 16-bit data pointer.
DATA POINTER LOW1
(initial=00H)
Bit:
7
6
5
4
3
2
1
0
DPL1.7 DPL1.6 DPL1.5 DPL1.4 DPL1.3 DPL1.2 DPL1.1 DPL1.0
Mnemonic: DPL1
This is the low byte of the new additional 16-bit data pointer that has been added to the
W925E/C240. The user can switch between DPL, DPH and DPL1, DPH1 simply by
setting register DPS.0 = 1. The instructions that use DPTR will now access DPL1 and
DPH1 in place of DPL and DPH. If they are not required they can be used as
conventional register locations by the user.
Address: 84h
DPL1:
DATA POINTER HIGH1
(initial=00H)
Bit:
7
6
5
4
3
2
1
0
DPH1.7 DPH1.6 DPH1.5 DPH1.4 DPH1.3 DPH1.2 DPH1.1 DPH1.0
Mnemonic: DPH1
Address: 85h
DPH1:
This is the high byte of the new additional 16-bit data pointer that has been added to the
W925E/C240. The user can switch between DPL, DPH and DPL1, DPH1 simply by
setting register DPS = 1. The instructions that use DPTR will now access DPL1 and
DPH1 in place of DPL and DPH. If they are not required they can be used as
conventional register locations by the user.
DATA POINTER SELECT
(initial=00H)
Bit:
7
-
6
-
5
-
4
-
3
-
2
-
1
-
0
DPS.0
Mnemonic: DPS
Address: 86h
DPS.0: This bit is used to select either the DPL,DPH pair or the DPL1,DPH1 pair as the active
Data Pointer. When set to 1, DPL1,DPH1 will be selected, otherwise DPL,DPH will be
selected.
DPS.1-7:These bits are reserved, but will read 0.
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