AMD-K6-2E/400AFR AMD [Advanced Micro Devices], AMD-K6-2E/400AFR Datasheet - Page 116
AMD-K6-2E/400AFR
Manufacturer Part Number
AMD-K6-2E/400AFR
Description
Manufacturer
AMD [Advanced Micro Devices]
Datasheet
1.AMD-K6-2E400AFR.pdf
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AMD-K6™-2E Processor Data Sheet
5.17
Pin Attribute
Pin Location
Summary
Driven and Floated
98
D/C# (Data/Code)
Output
AK-04
The processor drives D/C # during a memory bus cycle to
indicate whether it is addressing data or executable code. D/C#
is also used to define other bus cycles, including interrupt
acknowledge and special cycles. See Table 23 on page 132 for
more details.
D/C# is driven off the same clock edge as ADS# and remains in
the same state until the clock edge on which NA # or the last
expected BRDY # of the cycle is sampled asserted. D/C # is
driven during memory cycles, I/O cycles, special bus cycles, and
interrupt acknowledge cycles.
D/C # is floated off the clock edge that BOFF # is sampled
asserted and off the clock edge that the processor asserts HLDA
in recognition of HOLD.
Preliminary Information
Signal Descriptions
22529B/0—January 2000
Chapter 5
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