DSP56362AD datasheet(21/168 Pages) MOTOROLA

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Signal/Connection Descriptions

Host Interface (HDI08)

MOTOROLA

DSP56362 Advance Information

1-13

Table 1-9 Host Interface

Signal

Name

Type

State during

Reset

Signal Description

H0–H7

HAD0–

HAD7

PB0–PB7

Input/

output

Input/

output

Input, output,

disconnected

GPIO

disconnected

Host Data—When the HDI08 is programmed to

interface a nonmultiplexed host bus and the HI

function is selected, these signals are lines 0–7

of the bidirectional, tri-state data bus.

Host Address—When HDI08 is programmed to

interface a multiplexed host bus and the HI

function is selected, these signals are lines 0–7

of the address/data bidirectional, multiplexed, tri-

state bus.

Port B 0–7—When the HDI08 is configured as

GPIO, these signals are individually

programmable as input, output, or internally

disconnected.

The default state after reset for these signals is

GPIO disconnected.

This input is 5 V tolerant.

HA0

HAS/

HAS

PB8

Input

Input, output,

disconnected

GPIO

disconnected

Host Address Input 0—When the HDI08 is

programmed to interface a nonmultiplexed host

bus and the HI function is selected, this signal is

line 0 of the host address input bus.

Host Address Strobe—When HDI08 is

programmed to interface a multiplexed host bus

and the HI function is selected, this signal is the

host address strobe (HAS) Schmitt-trigger input.

The polarity of the address strobe is

programmable, but is configured active-low

(HAS) following reset.

Port B 8—When the HDI08 is configured as

GPIO, this signal is individually programmed as

input, output, or internally disconnected.

The default state after reset for this signal is

GPIO disconnected.

This input is 5 V tolerant.

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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