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56858

16-bit Digital Signal Controllers

Freescale Semiconductor 

Introduction

Table 3-1 56858 Signal and Package Information for the 144-pin LQFP and MAPBGA

Signal

Name

MODE B

BGA LQFP

Pin No. Pin No.

F3

18

Type

Input

Description

Mode Select (MODE B)—During the bootstrap process MODE A

selects one of the eight bootstrap modes.

GPIOH1

MODE C

F2

Input/Output Port H GPIO (1)—This pin is a General Purpose I/O (GPIO) pin after

the bootstrap process has completed.

19

Input

Mode Select (MODE C)—During the bootstrap process MODE A

selects one of the eight bootstrap modes.

GPIOH2

RESET

K4

Input/Output Port H GPIO (2)—This pin is a General Purpose I/O (GPIO) pin after

the bootstrap process has completed.

39

Input

Reset (RESET)—This input is a direct hardware reset on the

processor. When RESET is asserted low, the device is initialized and

placed in the Reset state. A Schmitt trigger input is used for noise

immunity. When the RESET pin is deasserted, the initial chip operating

mode is latched from the MODE A, MODE B, and MODE C pins.

RSTO

K3

38

RXD0

L10

73

Output

Input

To ensure complete hardware reset, RESET and TRST should be

asserted together. The only exception occurs in a debugging

environment when a hardware reset is required and it is necessary not

to reset the JTAG/Enhanced OnCE module. In this case, assert

RESET, but do not assert TRST.

Reset Output (RSTO)—This output is asserted on any reset condition

(external reset, low voltage, software, or COP).

Serial Receive Data 0 (RXD0)—This input receives byte-oriented

serial data and transfers it to the SCI 0 receive shift register.

GPIOE0

TXD0

L11

Input/Output Port E GPIO (0)—This pin is a General Purpose I/O (GPIO) pin that

can individually be programmed as input or output pin.

74

Output(Z) Serial Transmit Data 0 (TXD0)—This signal transmits data from the

SCI 0 transmit data register.

GPIOE1

RXD1

B11

Input/Output Port E GPIO (1)—This pin is a General Purpose I/O (GPIO) pin that

can individually be programmed as input or output pin.

107

Input

Serial Receive Data 1 (RXD1)—This input receives byte-oriented

serial data and transfers it to the SCI 1 receive shift register.

GPIOE2

TXD1

C10

Input/Output Port E GPIO (2)—This pin is a General Purpose I/O (GPIO) pin that

can individually be programmed as input or output pin.

108

Output(Z) Serial Transmit Data 1 (TXD1)—This signal transmits data from the

SCI 1 transmit data register.

GPIOE3

Input/Output Port E GPIO (3)—This pin is a General Purpose I/O (GPIO) pin that

can individually be programmed as input or output pin.

56858 Technical Data, Rev. 6

Freescale Semiconductor

17

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