SPC5644AF0MLU2 datasheet(61/138 Pages) FREESCALE

61 / 138 page

MPC5644A Microcontroller Data Sheet, Rev. 7

Freescale Semiconductor

BOOTCFG[0:1]

SIU - Configuration

Two BOOTCFG signals are implemented in MPC5644A MCUs.

The BAM program uses the BOOTCFG0 bit to determine where

to read the reset configuration word, and whether to initiate a

FlexCAN or eSCI boot.

The BOOTCFG1 pin is sampled during the assertion of the

RSTOUT signal, and the value is used to update the RSR and

the BAM boot mode

See the MPC5644A Microcontroller Reference Manual for more

information.

The following values are for BOOTCFG[0:1}:

00:Boot from internal flash memory

01:FlexCAN/eSCI boot

10:Boot from external memory using EBI

11:Reserved

Note: For the 176-pin QFP and 208-ball BGA packages

BOOTCFG[0] is always 0 since the EBI interface is not available.

WKPCFG

SIU - Configuration

The WKPCFG pin is applied at the assertion of the internal reset

signal (assertion of RSTOUT), and is sampled 4 clock cycles

before the negation of the RSTOUT pin.

The value is used to configure whether the eTPU and eMIOS

pins are connected to internal weak pull up or weak pull down

devices after reset. The value latched on the WKPCFG pin at

reset is stored in the Reset Status Register (RSR), and is

updated for all reset sources except the Debug Port Reset and

Software External Reset.

0: Weak pulldown applied to eTPU and eMIOS pins at reset

1: Weak pullup applied to eTPU and eMIOS pins at reset.

ETRIG[2:3]

SIU - eQADC Triggers

External signal eTRIGx triggers eQADC CFIFOx

GPIO[206] ETRIG0

(Input)

SIU - eQADC Triggers

External signal eTRIGx triggers eQADC CFIFOx

GPIO[207] ETRIG1

(Input)

SIU - eQADC Triggers

External signal eTRIGx triggers eQADC CFIFOx

IRQ[0:5]

IRQ[7:15]

SIU - External Interrupts The IRQ[0:15] pins connect to the SIU IRQ inputs. IMUX Select

IRQs.

See the MPC5644A Microcontroller Reference Manual for more

information.

NMI

SIU - External Interrupts Non-Maskable Interrupt

Table 5. Signal details (continued)

Signal

Module or Function

Description

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