82091AA Datasheet, PDF (80/204 Pages) Intel Corporation – ADVANCED INTEGRATED PERIPHERAL (AIP)

82091AA
6 1 3 4 SDFIFO Standard Parallel Port Data FIFO
I O Address
Default Value
Attribute
Size
Base ^a400h and (ECR 7 5 ^e010)
UUUU UUUU (undefined)
Read Write
8 bits
SDFIFO is used to transfer data from the host to the peripheral when the ECR Register is set for ISA-Compati-
ble FIFO mode (bits 7 5 ^e010) Data bytes written or DMAed from the system to this FIFO are transmitted by
a hardware handshake to the peripheral using the standard ISA-Compatible protocol Note that bit 5 in the
PCON Register must be set to 0 for a forward transfer direction
NOTE
UeUndefined
Figure 33 ECP ISA-Compatible Data FIFO
290486 – 33
Bit
Description
7 0 ECP STANDARD PARALLEL PORT DATA Bits 7 0 correspond to SD 7 0 and PD 7 0
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