XR16C872IQ View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR16C872IQ

Dual UART with 1284 Parallel Port and Plug-and-Play Controller

Exar Corporation 

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Preliminary

XR16C872

IOW#

T20

PD0-7

ACK#

IRQx

T8

T21

Figure 18. Parallel Port Timing in SPP, PS/2 Mode

T22

7836SPP

TC

DRQx

AEN

DACKx#

IOW#,

IOR#

T23

T24

T25

T26

Rev. P1.00

Figure 19. Host DMA Timing in ECP Mode

55

7836DMA

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