參數(shù)資料
型號: PCI1410GHK
廠商: Texas Instruments, Inc.
英文描述: PC CARD CONTROLLERS
中文描述: PC卡控制器
文件頁數(shù): 130/145頁
文件大小: 606K
代理商: PCI1410GHK
7–2
7.2
DDMA Page Register
The DDMA page register sets the upper byte of the address of a DDMA transfer. Details of the address represented
by this register are explained in Section 7.1, DDMA Current Address/Base Address Register
Bit
7
6
5
4
3
2
1
0
Name
DDMA page
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
Register:
Offset:
Type:
Default:
DDMA page
DDMA base address + 02h
Read/Write
00h
7.3
DDMA Current Count/Base Count Register
The DDMA current count/base count register sets the total transfer count, in bytes, of a direct memory transfer. Read
transactions to this register indicate the current count of a direct memory transfer. In the 8-bit transfer mode, the count
is decremented by 1 after each transfer, and the count is decremented by 2 after each transfer in the 16-bit transfer
mode.
Bit
15
14
13
12
11
10
9
8
Name
DDMA current count/base count
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
Name
DDMA current count/base count
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
Register:
Offset:
Type:
Default:
DDMA current count/base count
DDMA base address + 04h
Read/Write
0000h
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