参数资料
型号: YMF754-V
厂商: Yamaha Corporation
英文描述: DS-1E
中文描述: 副秘书长至1E
文件页数: 9/60页
文件大小: 305K
代理商: YMF754-V
YMF754
June 28, 1999
-17-
3Ch: Interrupt Line
Read / Write
Default: 00h
Access Bus Width: 8, 16, 32-bit
b7
b6
b5
b4
b3
b2
b1
b0
Interrupt Line
b[7:0] ..........Interrupt Line
This register indicates the interrupt channel that INTA# is assigned to.
3Dh: Interrupt Pin
Read Only
Default: 01h
Access Bus Width: 8, 16, 32-bit
b7
b6
b5
b4
b3
b2
b1
b0
Interrupt Pin
b[7:0] ..........Interrupt Pin
DS-1E supports INTA# only.
This register is hardwired to 01h.
3Eh: Minimum Grant
Read Only
Default: 05h
Access Bus Width: 8, 16, 32-bit
b7
b6
b5
b4
b3
b2
b1
b0
Minimum Grant
b[7:0] ..........Minimum Grant
This register indicates the length of the burst period required by DS-1E.
This register is hardwired to 05h.
3Fh: Maximum Latency
Read Only
Default: 19h
Access Bus Width: 8, 16, 32-bit
b7
b6
b5
b4
b3
b2
b1
b0
Maximum Latency
b[7:0] ..........Maximum Latency
This register indicates how often DS-1E generates the Bus Master Request.
This register is hardwired to 19h.
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