DSP56307SLASHD datasheet(31/156 Pages) NXP

31 / 156 page

Signals/Connections

SCI

MOTOROLA

DSP56307 Technical Data

1-25

SCI

The SCI provides a full duplex port for serial communication to other DSPs,

microprocessors, or peripherals such as modems.

SRD1

PD4

Input/

Output

Input or

Output

Input

Serial Receive Data

ÑSRD1 receives serial data

and transfers the data to the ESSI receive shift

received.

Port D 4

ÑThe default configuration following

reset is GPIO input PD4. When configured as

PD4, signal direction is controlled through

PRR1. The signal can be configured as an ESSI

signal SRD1 through PCR1.

Note:

This signal has a weak keeper to maintain the last

state even if all drivers are tri-stated.

STD1

PD5

Input/

Output

Input or

Output

Input

Serial Transmit Data

ÑSTD1 is used for

transmitting data from the serial transmit shift

transmitted.

Port D 5

ÑThe default configuration following

reset is GPIO input PD5. When configured as

PD5, signal direction is controlled through

PRR1. The signal can be configured as an ESSI

signal STD1 through PCR1.

Note:

This signal has a weak keeper to maintain the last

state even if all drivers are tri-stated.

Table 1-12

Enhanced Serial Synchronous Interface 1 (Continued)

Signal Name

Type

State During

Reset

Signal Description

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

Not Recommended for New Design

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