參數(shù)資料
型號: Z80L182
廠商: ZiLOG, Inc.
英文描述: CAP .0001UF 50V POLYPROPYLENE
中文描述: ZiLOG的智能外設(shè)控制器(郵編⑩)
文件頁數(shù): 39/109頁
文件大小: 738K
代理商: Z80L182
3-39
Z80182/Z8L182
Z
ILOG
I
NTELLIGENT
P
ERIPHERAL
P R E L I M I N A R Y
Zilog
DS971820600
DMA REGISTERS
DAR0L
Read/Write
DA7
Addr 23H
DA0
DAR0H
Read/Write
DA15
Addr 24H
DA8
DAR0B
Read/Write
Addr 25H
DA16
DA19
-
-
-
-
Bits 0-2 (3) are used for DAR0B
A19,
x
x
x
x
A18,
x
x
x
x
A17,
0
0
1
1
A16
0
1
0
1
DMA Transfer Request
/DREQ0 (external)
TDR0 (ASCI0)
TDR1 (ASCI1)
Not Used
Figure 35. DMA 0 Destination Address Registers
BCR0L
Read/Write
BC7
Addr 26H
BC0
BCR0H
Read/Write
BC15
Addr 27H
BC8
Figure 36. DMA 0 Byte Counter Registers
MAR1L
Read/Write
MA7
Addr 28H
MA0
MAR1H
Read/Write
MA15
Addr 29H
MA8
MAR1B
Read/Write
Addr 2AH
MA16
MA19
-
-
-
-
Figure 37. DMA 1 Memory Address Registers
BCR1L
Read/Write
BC7
Addr 2EH
BC0
BCR1H
Read/Write
BC15
Addr 2FH
BC8
Figure 39. DMA 1 Byte Count Registers
IAR1L
Read/Write
IA7
Addr 2BH
IA0
IAR1H
Read/Write
IA15
Addr 2CH
IA8
Figure 38. DMA I/O Address Registers
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