8-7

MS622424

MOSEL VITELIC

MS622424 Rev. 1.0 January 1995

Pin Descriptions (Cont’d)

Pin Name

Description

RSB

Reset input pin. This asynchronous system reset initializes state machines and

resets the Address, Status, and Color Buffer registers. It also resets the Write

FIFO so that it is empty of any contents. It resets command register bits CB2–CB7

and sets bits CB0–CB1. During a reset, CONFIGBUS0–CONFIGBUS7 are in

tri-state. This pin is active low.

AFB

The FIFO status output pin. This active low output indicates that the Write FIFO is

half or almost full. This active low output can be programmed by a bit in the

Command Register to indicate that the FIFO is at least half full or is almost full

(eight or less empty locations left).

FFB

The FIFO status output pin. This active low output indicates that the Write FIFO

is full.

This pin should be grounded for normal operation.

BD.REV(0-3)

INPUT

POUT(0-23)

PIX.IN(0-23)

PIPE.IN(0-3)

ADDRESS

DECODER

SENSE

AMPLIFIER

OUTPUT

CLOCK.IN

PIPE.OUT(0-3)

LATCH 1

LATCH 4

LATCH 2

LATCH 3

24

4

Internal Pipeline Data Path for Pixel and Pipe Input Data