DSP56857E datasheet(17/53 Pages) FREESCALE

17 / 53 page

Introduction

56857 Technical Data, Rev. 6

Freescale Semiconductor

SC01

GPIOC4

Input/Output

ESSI Serial Control Pin 1 (SC01)—The function of this pin is determined

by the selection of either synchronous or asynchronous mode. For

asynchronous mode, this pin is the receiver frame sync I/O. For

synchronous mode, this pin is used either for transmitter2 output or for

serial I/O flag 1.

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

ESSI is not in use.

SC02

GPIOC5

Input/Output

ESSI Serial Control Pin 2 (SC02)—This pin is used for frame sync I/O.

SC02 is the frame sync for both the transmitter and receiver in

synchronous mode and for the transmitter only in asynchronous mode.

When configured as an output, this pin is the internally generated frame

sync signal. When configured as an input, this pin receives an external

frame sync signal for the transmitter (and the receiver in synchronous

operation).

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

ESSI is not in use.

STD1

GPIOD0

Output

Input/Output

ESSI Transmit Data (STD1)—This output pin transmits serial data from

the ESSI Transmitter Shift Register.

Port D GPIOD0—This pin is a General Purpose I/O (GPIO) pin when the

ESSI is not in use.

SRD1

GPIOD1

Input

Input/Output

ESSI Receive Data (SRD1)—This input pin receives serial data and

transfers the data to the ESSI Receive Shift Register.

Port D GPIO (1)—This pin is a General Purpose I/O (GPIO) pin when the

ESSI is not in use.

SCK1

GPIOD2

Input/Output

ESSI Serial Clock (SCK1)—This bidirectional pin provides the serial bit

rate clock for the transmit section of the ESSI. The clock signal can be

continuous or gated and can be used by both the transmitter and receiver

in synchronous mode.

Port D GPIO (2)—This pin is a General Purpose I/O (GPIO) pin when the

ESSI is not in use.

SC10

GPIOD3

Input/Output

ESSI Serial Control Pin 0 (SC10)—The function of this pin is determined

by the selection of either synchronous or asynchronous mode. For

asynchronous mode, this pin will be used for the receive clock I/O. For

synchronous mode, this pin is used either for transmitter1 output or for

serial I/O flag 0.

Port D GPIO (3)—This pin is a General Purpose I/O (GPIO) pin when the

ESSI is not in use.

Table 3-1 56857 Signal and Package Information for the 100-pin LQFP (Continued)

Pin No.

Signal Name

Type

Description

DSP56857E Datasheet(PDF) 17 Page - Freescale Semiconductor, Inc

DSP56857E Datasheet(HTML) 17 Page - Freescale Semiconductor, Inc

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53

Datasheet Download

Link URL