DSP56367P View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

DSP56367P

24-Bit Audio Digital Signal Processor

Freescale Semiconductor 

Parallel Host Interface (HDI08)

Table 2-9 Host Interface (continued)

Signal Name

Type

State During

Reset

Signal Description

HA2

HA9

PB10

Input

GPIO Host Address Input 2—When the HDI08 is programmed to interface a

Disconnected non-multiplexed host bus and the HI function is selected, this signal is line 2

of the host address (HA2) input bus.

Input

Host Address 9—When HDI08 is programmed to interface a multiplexed host

bus and the HI function is selected, this signal is line 9 of the host address

(HA9) input bus.

Input, Output, or

Disconnected

Port B 10—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 3.3V tolerant.

HRW

HRD/

HRD

PB11

Input

GPIO Host Read/Write—When HDI08 is programmed to interface a

Disconnected single-data-strobe host bus and the HI function is selected, this signal is the

Host Read/Write (HRW) input.

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.

Input, Output, or

Disconnected

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 3.3V tolerant.

HDS/

HDS

HWR/

HWR

PB12

Input

GPIO Host Data Strobe—When HDI08 is programmed to interface a

Disconnected 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.

Input

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.

Input, Output, or

Disconnected

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 3.3V tolerant.

DSP56367 Technical Data, Rev. 2.1

Freescale Semiconductor

2-9

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