DSP56852PB View Datasheet(PDF) - Motorola => Freescale

Part Name

Description

Manufacturer

DSP56852PB

16-bit Digital Signal Processor

Motorola => Freescale 

Freescale Semiconductor, Inc.

Introduction

Table 3. DSP56852 Signal and Package Information for the 81-pin MAPBGA

Pin No.

C4

Signal Name

MISO

Type

Input/Output

Description

SPI Master In/Slave Out (MISO)—This serial data pin is an

input to a master device and an output from a slave device.

The MISO line of a slave device is placed in the high-

impedance state if the slave device is not selected.

GPIOC4

Input/Output

Port C GPIO (4)—This pin is a General Purpose I/O (GPIO)

pin that can individually be programmed as input or output

pin.

SRCK

Input/Output

SSI Serial Receive Clock (SRCK)—This bidirectional pin

provides the serial bit rate clock for the receive section of the

SSI. The clock signal can be continuous or gated.

C5

MOSI

Input/

SPI Master Out/Slave In (MOSI)—This serial data pin is an

Output (Z) output from a master device and an input to a slave device.

The master device places data on the MOSI line a half-cycle

before the clock edge that the slave device uses to latch the

data.

GPIOC5

Input/Output

Port C GPIO (5)—This pin is a General Purpose I/O (GPIO)

pin that can individually be programmed as input or output

pin.

SRFS

Input/Output

SSI Serial Receive Frame Sync (SRFS)— This

bidirectional pin is used to count the number of words in a

frame while receiving. A programmable frame rate divider

and a word length divider are used for frame rate sync signal

generation.

A1

IRQA

Input

External Interrupt Request A (IRQA)—The IRQA Schmitt

trigger input is a synchronized external interrupt request that

indicates that an external device is requesting service. It can

be programmed to be level-sensitive or negative-edge-

triggered.

C2

IRQB

Input

External Interrupt Request B (IRQB)—The IRQB Schmitt

trigger input is an external interrupt request that indicates

that an external device is requesting service. It can be

programmed to be level-sensitive or negative-edge-

triggered.

A6

EXTAL

Input

External Crystal Oscillator Input (EXTAL)—This input

should be connected to an external crystal. If an external

clock source other than a crystal oscillator is used, EXTAL

must be tied off.

A7

XTAL

Input/Output Crystal Oscillator Output (XTAL)—This output connects

the internal crystal oscillator output to an external crystal. If

an external clock source other than a crystal oscillator is

used, XTAL must be used as the input.

DSP56852 Technical Data

11

Preliminary

For More Information On This Product,

Go to: www.freescale.com

Share Link: