SPC5644AF0MLU2 datasheet(60/138 Pages) FREESCALE

60 / 138 page

MPC5644A Microcontroller Data Sheet, Rev. 7

Freescale Semiconductor

CAN_A_TX

CAN_B_TX

CAN_C_TX

FlexCan_A -

FlexCAN_C

FlexCAN transmit

CAN_A_RX

CAN_B_RX

CAN_C_RX

FlexCAN_A -

FlexCAN_C

FlexCAN receive

FR_A_RX

FR_B_RX

FlexRay

FlexRay receive (Channels A, B)

FR_A_TX_EN

FR_B_TX_EN

FlexRay

FlexRay transmit enable (Channels A, B)

FR_A_TX

FR_B_TX

FlexRay

Flexray transmit (Channels A, B)

JCOMP

JTAG

Enables the JTAG TAP controller.

TCK

JTAG

Clock input for the on-chip test logic.

TDI

JTAG

Serial test instruction and data input for the on-chip test logic.

TDO

JTAG

Serial test data output for the on-chip test logic.

TMS

JTAG

Controls test mode operations for the on-chip test logic.

EVTI

Nexus

EVTI is an input that is read on the negation of RESET to enable

or disable the Nexus Debug port. After reset, the EVTI pin is

used to initiate program synchronization messages or generate

a breakpoint.

EVTO

Nexus

Output that provides timing to a development tool for a single

watchpoint or breakpoint occurrence.

MCKO

Nexus

MCKO is a free running clock output to the development tools

which is used for timing of the MDO and MSEO signals.

MDO[0:11]1

Nexus

Trace message output to development tools. This pin also

indicates the status of the crystal oscillator clock following a

power-on reset, when MDO[0] is driven high until the crystal

oscillator clock achieves stability and is then negated.

MSEO[0:1]1

Nexus

Output pin—Indicates the start or end of the variable length

message on the MDO pins

RDY

Nexus

Nexus Ready Output (RDY) is an output that indicates to the

development tools the data is ready to be read from or written to

the Nexus read/write access registers.

Table 5. Signal details (continued)

Signal

Module or Function

Description

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