DSP56362AD datasheet(23/168 Pages) MOTOROLA

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Signal/Connection Descriptions

Host Interface (HDI08)

MOTOROLA

DSP56362 Advance Information

1-15

HRW

HRD/

HRD

PB11

Input

Input, Output,

Disconnected

GPIO

disconnected

Host Read/Write—When HDI08 is programmed

to interface a single-data-strobe host bus and the

HI function is selected, this signal is the Host

Read/Write (HRW) input.

Host Read Data—When HDI08 is programmed

to interface a double-data-strobe host bus and

the HI function is selected, this signal is the host

read data strobe (HRD) Schmitt-trigger input. The

polarity of the data strobe is programmable, but is

configured as active-low (HRD) after reset.

Port B 11—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.

HDS/

HDS

HWR/

HWR

PB12

Input

Input, output,

disconnected

GPIO

disconnected

Host Data Strobe—When HDI08 is programmed

to interface a single-data-strobe host bus and the

HI function is selected, this signal is the host data

strobe (HDS) Schmitt-trigger input. The polarity

of the data strobe is programmable, but is

configured as active-low (HDS) following reset.

Host Write Data—When HDI08 is programmed

to interface a double-data-strobe host bus and

the HI function is selected, this signal is the host

write data strobe (HWR) Schmitt-trigger input.

The polarity of the data strobe is programmable,

but is configured as active-low (HWR) following

reset.

Port B 12—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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