参数资料
型号: MB86703PF
元件分类: 微控制器/微处理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PQFP80
封装: 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件页数: 4/32页
文件大小: 189K
代理商: MB86703PF
MB86703
Plug and Play ISA Controller
12
Table 2. MB86703 Submodes and Resource Assignments
* The MB86703 supports either DMAs or memory chip selects, depending on mode.
Figure 2. MB86703 Resource Assignments in MEMORY Mode
SUBMODE/
LOGICAL
DEVICE #
DMA
CHANNELS*
MEMORY
CHIP
SELECTS*
I/O CHIP SELECTS
INTERRUPTS
CARD SIDE
I/O PINS
--------->
DMA
A
DMA
B
/MCS
A
/MCS
B
/IOCS
A
/IOCS
B
/IOCS
C
/IOCS
D
INT
A
INT
B
INT
C
INT
D
0/LD0
DMA0
DMA1
/MCS0
/MCS1
/IOCS0
/IOCS1
/IOCS2
/IOCS3
INT0
INT1
NOT
USED
NOT
USED
1/LD0
DMA0
DMA1
/MCS0
/MCS1
/IOCS0
/IOCS1
INT0
INT1
1/LD1
/IOCS0
/IOCS1
INT0
INT1
2/LD0
DMA0
/MCS0
/IOCS0
/IOCS1
INT0
INT1
2/LD1
DMA0
/MCS0
/IOCS0
/IOCS1
INT0
INT1
3/LD0
DMA0
/MCS0
/IOCS0
INT0
3/LD1
DMA0
/MCS0
/IOCS0
INT0
3/LD2
/IOCS0
INT0
3/LD3
/IOCS0
INT0
SUBMODE 0
LD0
INTA
INTB
INTC
INTD
/IOCSA
/IOCSB
/IOCSC
/IOCSD
/MSCA{DRQA}
/MSCB{/DACKA}
INT0
INT1
/IOCS0
/IOCS1
/IOCS2
/IOCS3
/MCS0
/MCS1
/REFRESH{DRQB}
{/DACKB}
SUBMODE 1
LD0
LD1
INTA
INTB
/IOCSA
/IOCSB
/MSCA{DRQA}
/MSCB{/DACKA}
/REFRESH{DRQB}
{/DACKB}
INTC
INTD
INT0
INT1
/MCS0
/MCS1
/IOCSC
/IOCSD
/IOCS0
/IOCS1
INT0
/IOCS0
SUBMODE 2
LD0
LD1
INTA
INTB
/IOCSA
/IOCSB
/MSCA{DRQA}
/MSCB{/DACKA}
/REFRESH{DRQB}
{/DACKB}
INTC
INTD
INT0
INT1
/MCS0
/IOCSC
/IOCSD
/IOCS0
/IOCS1
INT0
/IOCS0
SUBMODE 3
LD0
LD1
LD2
LD3
INTA
/IOCSA
/MSCA{DRQA}
/REFRESH{DRQB}
INTB
/IOCSB
/MSCB{/DACKA}
{/DACKB}
INTC
/IOCSC
INT0
/MCS0
INTD
/IOCSD
INT0
/IOCS0
/MCSA (
/MCSB (
/MCSA (
/MCSB (
/MCSA (
/MCSB (
/MCSA (
/MCSB (
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