MC68340 datasheet(384/441 Pages) FREESCALE

Part #	MC68340

Description	Integrated Processor with DMA User?셲 Manual

PDF	441 Pages

Scroll/Zoom	100%

Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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384 / 441 page

MOTOROLA

MC68340 USER’S MANUAL

9- 9

MUX

OUTPUT

FROM

SYSTEM

LOGIC

FROM LAST

CELL

CLOCK DR

UPDATE DR

TO NEXT

CELL

TO OUTPUT

DRIVER

1 – EXTEST

0 – OTHERWISE

SHIFT DR

MUX

FROM OUTPUT

ENABLE

FROM PIN

Figure 9-7. Bidirectional Data Cell (IO.Cell)

IO.CTL0

IO.CTL1

IO.CELL

FROM LAST CELL

OUTPUT

DATA

INPUT

DATA

OUTPUT

ENABLE

I/O

TO NEXT CELL

TO NEXT

BIDIRECTIONAL

NOTE: More than one lO.Cell could be serially connected and controlled by a single IO.Ctlx cell.

Figure 9-8. General Arrangement for Bidirectional Pins

9.4 INSTRUCTION REGISTER

The MC68340 IEEE 1149.1 implementation includes the three mandatory public

instructions (EXTEST, SAMPLE/PRELOAD, and BYPASS), but does not support any of

the optional public instructions defined by IEEE 1149.1. One additional public instruction

(HI-Z) provides the capability for disabling all device output drivers. The MC68340

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