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Signal
BOOTCFG[0:1]
WKPCFG
ETRIG[2:3]
GPIO[206] ETRIG0
(Input)
GPIO[207] ETRIG1
(Input)
IRQ[0:5]
IRQ[7:15]
Freescale Semiconductor
Table 3-3. Signal details (continued)
Module or Function
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
details on the RCHW.
program
BOOTCFG1 pin.
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.
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.
SIU - eQADC Triggers
External signal eTRIGx triggers eQADC CFIFOx
SIU - eQADC Triggers
External signal eTRIGx triggers eQADC CFIFOx
SIU - eQADC Triggers
External signal eTRIGx triggers eQADC CFIFOx
SIU - External
The IRQ[0:15] pins connect to the SIU IRQ inputs. IMUX Select
Interrupts
Register 1 is used to select the IRQ[0:15] pins as inputs to the
IRQs.
See
(SIU_EIISR)" for more detail.
MPC5644A Microcontroller Reference Manual, Rev. 6
Description
Section 4.7.1, Reset configuration half word
Table 21-3
in
operation," defines the boot modes specified by the
Section 16.6.19, External IRQ Input Select Register
Signal Description
(RCHW)" for
Section 21.5.2, BAM
89
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