MAC7200 datasheet(119/976 Pages) FREESCALE

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Detailed Signal Descriptions

MAC7200 Microcontroller Family Reference Manual, Rev. 2

Freescale Semiconductor

Serial Peripheral Interface B (DSPI_B). It can be configured to wake the system out of low-power mode

(DOZE) when an external signal is applied using the interrupt functionality.

4.3.10

PA[9] / DATA[9] / PCS[3] / NEX1EVTI — Port A I/O Pin, External

Databus, DSPI_B and Nexus Primary

PA[9] is a configurable general purpose input or output pin. It can be independently configured to provide

either high or reduced output drive, and also to enable or disable either a pull-up or pull-down resistor on

the pin. The pin is multiplexed in Primary Peripheral mode with the external Data bus line DATA[9]. In

Secondary Peripheral mode, it can be configured as a chip select pin PCS[3] when in Master mode for the

Serial Peripheral Interface B (DSPI_B). It can be configured to wake the system out of low-power mode

(DOZE) when an external signal is applied using the interrupt functionality. When the Nexus Primary Port

is selected and active, this pin is used as the Event In input.

4.3.11

PA[10:15] / DATA[10:15] — Port A I/O Pins and external Databus

PA[10] to PA[15] are configurable general purpose input or output pins. They can be independently

configured to provide either high or reduced output drive, and also to enable or disable either a pull-up or

pull-down resistor on the pin. The pin is multiplexed with the external Data bus lines DATA[10] to

DATA[15]. Each pin can be independently configured to wake the system out of low-power mode (DOZE)

when an external signal is applied using the interrupt functionality.

4.3.12

PB[0] / SDA / NEX1MCKO — Port B I/O Pin, IIC and Nexus Primary

PB[0] is a configurable general purpose input or output pin. It can be configured to provide either high or

reduced output drive, to enable or disable either a pull-up or pull-down resistor on the pin or to provide

either an open drain or push-pull pad. The port pin is multiplexed with the bidirectional IIC serial data pin.

It can be configured to wake the system out of low-power mode (DOZE) when an external signal is applied

using the interrupt functionality. When the Nexus Primary Port is selected and active, this pin is used as

the Nexus Clock output.

4.3.13

PB[1] / SCL / NEX1EVTO — Port B I/O Pin, IIC and Nexus Primary

PB[1] is a configurable general purpose input or output pin. It can be configured to provide either high or

reduced output drive, to enable or disable either a pull-up or pull-down resistor on the pin or to provide

either an open drain or push-pull pad. The port pin is multiplexed with the bidirectional IIC serial clock

pin used to provide the time base for transfers. It can be configured to wake the system out of low-power

mode (DOZE) when an external signal is applied using the interrupt functionality. When the Nexus

Primary Port is selected and active, this pin is used as the Nexus Event Out output.

4.3.14

PB[2] / SIN_A / NEX1MSEO — Port B I/O Pin, DSPI_A and Nexus

Primary

PB[2] is a configurable general purpose input or output pin. It can be configured to provide either high or

reduced output drive, to enable or disable either a pull-up or pull-down resistor on the pin or to provide

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