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VT82C596 датащи(PDF) 18 Page - List of Unclassifed Manufacturers

номер детали VT82C596
подробное описание детали  PCI INTEGRATED PERIPHERAL CONTROLLER
PDF  96 Pages
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производитель  ETC [List of Unclassifed Manufacturers]
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VT82C596 датащи(HTML) 18 Page - List of Unclassifed Manufacturers

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VT82C596B
Revision 0.3 June 17, 1999
-12-
Pinouts
7HFKQRORJLHV ,QF
:H &RQQHFW
:H &RQQHFW
ISA Bus Interface (continued)
Signal Name
Pin #
I/O
Signal Description
RFSH#
W7
IO
Refresh. As an output RFSH# indicates when a refresh cycle is in progress. As an
input RFSH# is driven by 16-bit ISA Bus masters to indicate refresh cycle.
AEN
Y4
O
Address Enable. AEN is asserted during DMA cycles to prevent I/O slaves from
misinterpreting DMA cycles as valid I/O cycles.
IRQ0OUT /
GPO14
H20
O
Multifunction Pin
Rx74[7] = 1
Interrupt Request 0 Output. Reflects the state of the internal
system timer IRQ0 signal.
Rx74[7] = 0
General Purpose Output 14.
IRQ1
J20
I
Interrupt Request 1.
IRQ3
T9
I
Interrupt Request 3.
IRQ4
W9
I
Interrupt Request 4.
IRQ5
U8
I
Interrupt Request 5.
IRQ6
V8
I
Interrupt Request 6.
IRQ7
Y8
I
Interrupt Request 7.
IRQ8# / GPI6
Y20
I
Multifunction Pin
Rx5A[2] = 0 Internal RTC disabled. Interrupt Request 8 from external RTC
Rx5A[2] = 1 Internal RTC enabled. General Purpose Input 6.
IRQ9
U1
I
Interrupt Request 9.
IRQ10
U12
I
Interrupt Request 10.
IRQ11
W13
I
Interrupt Request 11.
IRQ12
T13
I
Interrupt Request 12.
IRQ14
V14
I
Interrupt Request 14.
IRQ15
Y14
I
Interrupt Request 15.
DRQ7-5, 3-0
U17, U16,
Y16, U5, V2,
U6, W15
I
DMA Request. Used to request DMA services from the internal DMA controller.
DACK7-5, 3-0#
W17, V16,
T15, V5, Y10,
W6, U14
O
Acknowledge. Used by the internal DMA controller to indicate that a request for
DMA service has been granted.
TC
V10
O
Terminal Count. Asserted to DMA slaves as a terminal count indicator.
SPKR
K17
O
Speaker Drive. The output of internal timer/counter 2.



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