MEC1322 datasheet(19/456 Pages) MICROCHIP

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DS00001719D-page 19

MEC1322

1.4.15

SPI CONTROLLER INTERFACE

TABLE 1-19:

SPI CONTROLLER INTERFACE

1.4.16

TRACE DEBUG INTERFACE

TABLE 1-20:

TRACE DEBUG INTERFACE

The Trace Debug Interface is enabled using the TRACE_EN bit in the ETM TRACE Enable register defined in Chapter

35.0, "EC Subsystem Registers".

1.4.17

UART PORT

TABLE 1-21:

UART PORT

1.5

Pin Multiplexing

Multifunction Pin Multiplexing in the MEC1322 is controlled by the GPIO Interface and illustrated in the Multiplexing

Tables that follow. See Section 1.6, "Notes for Tables in this Chapter," on page 39 for notes that are referenced in the

Pin Multiplexing tables. See Section 20.8.1, "Pin Control Register," on page 250 for Pin Multiplexing programming

details. See also Section 20.7, "Pin Multiplexing Control," on page 248.

Pin signal functions that exhibit power domain emulation (see Multiplexing Tables below) have a different power supply

designation in the “Emulated Power Well” column and “Signal Power Well“ columns of the Multiplexing Tables in

Section 1.5.2.

Note:

These pins are push-pull outputs when enabled as the Trace Debug Interface pin functions. This function-

ality is not configured through the associated GPIO Pin Control Register; however the drive strength of

these pins is configured through the associated GPIO Pin Control Register 2.

SPI Controllers Interface

(10 Pins)

Pin Ref. Number

Signal Name

Description

Notes

SHD_SCLK

Shared SPI Clock

Note 10

128

SHD_MOSI

Shared SPI Output

Note 10

SHD_MISO

Shared SPI Input

Note 10

SHD_CS0#

Shared SPI Chip Select 0

Note 10

SHD_CS1#

Shared SPI Chip Select 1

PVT_SCLK

Private SPI Clock

Note 10

127

PVT_MOSI

Private SPI Output

Note 10

PVT_MISO

Private SPI Input

Note 10

PVT_CS0#

Private SPI Chip Select 0

Note 10

102

PVT_CS1#

Private SPI Chip Select 1

Trace Debug Interface

(5 Pins)

Pin Ref. Number

Signal Name

Description

Notes

TRACECLK

Trace Clock

TRACEDATA0

Trace Data 0

TRACEDATA1

Trace Data 1

TRACEDATA2

Trace Data 2

TRACEDATA3

Trace Data 3

UART Port

(2 Pins)

Pin Ref. Number

Signal Name

Description

Notes

RXD

UART Receive Data

TXD

UART Transmit Data

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