DSP56362AD datasheet(25/168 Pages) MOTOROLA

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Signal/Connection Descriptions

Host Interface (HDI08)

MOTOROLA

DSP56362 Advance Information

1-17

HACK/

HACK

HRRQ/

HRRQ

PB15

Input

Output

Input, output,

disconnected

GPIO

disconnected

Host Acknowledge—When HDI08 is

programmed to interface a single host request

host bus and the HI function is selected, this

signal is the host acknowledge (HACK) Schmitt-

trigger input. The polarity of the host

acknowledge is programmable, but is configured

as active-low (HACK) after reset.

Receive Host Request—When HDI08 is

programmed to interface a double host request

host bus and the HI function is selected, this

signal is the receive host request (HRRQ) output.

The polarity of the host request is programmable,

but is configured as active-low (HRRQ) after

reset. The host request may be programmed as a

driven or open-drain output.

Port B 15—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.

Table 1-9 Host Interface (Continued)

Signal

Name

Type

State during

Reset

Signal Description

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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