參數(shù)資料
型號(hào): 82C931
廠商: Electronic Theatre Controls, Inc.
英文描述: Plug and Play Integrated Audio Controller
中文描述: 即插即用集成音頻控制器
文件頁數(shù): 22/64頁
文件大?。?/td> 634K
代理商: 82C931
82C931
Page 14
912-3000-035
Revision: 2.1
OPTi
3.3.1
931-AD Mode Signal Descriptions
3.3.1.1
ISA Bus Signals
Signal Name
Pin No.
Signal/Pin
Type (Drive)
Signal Description
IOW#
49
I-TTL-Smt
50K
PU
I/O Write Command
IOR#
50
I-TTL-Smt
50K
PU
I/O Read Command
AEN
51
I-TTL-Smt
DMA Address Enable
RESET
84
I-TTL-Smt
50K
PD
System Reset Input
SA[15:0]
13:16,
83:72
I/O-TTL
(12mA)
System Address Bus Lines 15 through 0
SD[7:0]
71:68,
65:62
I/O-TTL
(16mA)
System Data Bus Lines 7 through 0
DACK0#
DACK1#
DACK3#
46,
47,
48
I-TTL
50K
PU
DMA Acknowledge Bits 0, 1, and 3
DRQ0
DRQ1
DRQ3
59
60
61
O-TS, 50K
PD
(12mA)
DMA Request Bits 0, 1, and 3
GPIO0
43
I/O-TTL, PU
(8mA)
General Purpose I/O Bit 0
EXTROM#
External EEPROM Enable Jumper Input:
Jumper setting is latched
at reset time. (If pin 43 is pulled up, external EEPROM is enabled.)
IRQ5
IRQ7
IRQ9
IRQ10
IRQ11
54
55
56
53
52
OD, I/O-TTL
(12mA)
Interrupt Request Bits 5, 7, and 9 through 11:
IRQ7 and IRQ[9:11]
are bidirectional for WSS auto interrupt determination
IRQ15
42
I/O-TTL
(12mA)
Interrupt Request Bit 15
GPIO3
General Purpose I/O Bit 1
3.3.1.2
MIDI Interface Signals
Signal Name
Pin No.
Signal/Pin
Type (Drive)
Signal Description
RXD
9
I-TTL-Smt
Receive Data from 32KBaud MIDI UART Port
TXD
10
O
(20mA)
Transmit Data to 32KBaud MIDI UART Port
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