mpc5632m Freescale Semiconductor, Inc, mpc5632m Datasheet - Page 16

• Manufacturer Part Number: mpc5632m
• Description: Mpc5634m Microcontroller Data Sheet
• Manufacturer: Freescale Semiconductor, Inc

Overview
1.3.7
The MPC5634M SIU controls MCU reset configuration, pad configuration, external interrupt, general purpose I/O (GPIO),
internal peripheral multiplexing, and the system reset operation. The reset configuration block contains the external pin boot
configuration logic. The pad configuration block controls the static electrical characteristics of I/O pins. The GPIO block
provides uniform and discrete input/output control of the I/O pins of the MCU. The reset controller performs reset monitoring
of internal and external reset sources, and drives the RSTOUT pin. Communication between the SIU and the e200z335 CPU
core is via the crossbar switch. The SIU provides the following features:
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— User selectable
— Programmable time-out period (with 8 external bus clock resolution)
Configurable wait states (via chip selects)
3 chip-select (Cal_CS[0], Cal_CS[2:3]) signals (Multiplexed with 2 most significant address signals)
2 write/byte enable (WE[0:1]/BE[0:1]) signals
Configurable bus speed modes
— system frequency
— 1/2 of system frequency
— 1/4 of system frequency
Optional automatic CLKOUT gating to save power and reduce EMI
Compatible with MPC5xx external bus (with some limitations)
Selectable drive strengths; 10 pF, 20 pF, 30 pF, 50 pF
System configuration
— MCU reset configuration via external pins
— Pad configuration control for each pad
— Pad configuration control for virtual I/O via DSPI serialization
System reset monitoring and generation
— Power-on reset support
— Reset status register provides last reset source to software
— Glitch detection on reset input
— Software controlled reset assertion
External interrupt
— 11 interrupt requests
— Rising or falling edge event detection
— Programmable digital filter for glitch rejection
— Critical Interrupt request
— Non-Maskable Interrupt request
GPIO
— GPIO function on 81 I/O pins
— Virtual GPIO on 64 I/O pins via DSPI serialization (requires external deserialization device)
— Dedicated input and output registers for setting each GPIO and Virtual GPIO pin
Internal multiplexing
— Allows serial and parallel chaining of DSPIs
— Allows flexible selection of eQADC trigger inputs
— Allows selection of interrupt requests between external pins and DSPI
SIU
Preliminary—Subject to Change Without Notice
MPC5634M Microcontroller Data Sheet, Rev. 3
Freescale Semiconductor