MC68340 datasheet(78/441 Pages) FREESCALE

부품명	MC68340

상세설명	Integrated Processor with DMA User?셲 Manual

PDF	441 Pages

Scroll/Zoom	100%

제조업체	FREESCALE [Freescale Semiconductor, Inc]

홈페이지	http://www.freescale.com

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MOTOROLA

MC68340 USER’S MANUAL

3- 29

CLKOUT

A31–A4

FC3–FC0

SIZ0

DSACKx

D7–D0

R/W

A3–A1

SIZ1

D15–D8

IRQ7–IRQ1

1 BYTE

INTERRUPT LEVEL

READ

CYCLE

INTERNAL

ARBITRATION

IACK CYCLE

IACK7–IACK1

WRITE

STACK

VECTOR FROM 16-BIT PORT

VECTOR FROM 8-BIT PORT

CPU SPACE

0–2 CLOCKS*

*Internal Arbitration may take between 0–2 clock cycles.

Figure 3-15. Interrupt Acknowledge Cycle Timing

3.4.4.2 AUTOVECTOR INTERRUPT ACKNOWLEDGE CYCLE. When the interrupting

device cannot supply a vector number, it requests an automatically generated vector

(autovector). Instead of placing a vector number on the data bus and asserting

DSACK

≈,

the device asserts

AVEC to terminate the cycle. If the DSACK

≈ signals are asserted

during an interrupt acknowledge cycle terminated by

AVEC, the DSACK

≈ signals and

Freescale Semiconductor, Inc.

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