DM383 datasheet(110/267 Pages) TI1

110 / 267 page

DM383

SPRS870B – APRIL 2013 – REVISED DECEMBER 2013

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4.2.5

SPI Boot

Table 4-6 lists the device pins that are configured by the ROM for the SPI boot mode.

Table 4-6. Pins Used in SPI Bootmode

SIGNAL NAME

PIN NO.

TYPE

SPI[0]_SCS[0]

G29

I/O

SPI[0]_D[0] (MISO)

J28

I/O

SPI[0]_D[1] (MOSI)

J27

I/O

SPI[0]_SCLK

N24

I/O

4.2.6

UART Bootmode

Table 4-7 lists the device pins that are configured by the ROM for the UART boot mode.

Table 4-7. Pins Used in UART Bootmode

SIGNAL NAME

PIN NO.

TYPE

UART0_RXD

J26

UART0_TXD

E28

4.3

Pin Multiplexing Control

Device level pin multiplexing is controlled on a pin-by-pin basis by the MUXMODE bits of the PINCNTL1 –

PINCNTL270 registers in the Control Module.

Pin multiplexing selects which one of several peripheral pin functions controls the pin's I/O buffer output

data values. Table 4-8 shows the peripheral pin functions associated with each MUXMODE setting for all

multiplexed pins. The default pin multiplexing control for almost every pin is to select MUXMODE = 0x0, in

which case the pin's I/O buffer is 3-stated.

In most cases, the input from each pin is routed to all of the peripherals that share the pin, regardless of

the MUXMODE setting. However, in some cases a constant "0" or "1" value is routed to the associated

peripheral when its peripheral function is not selected to control any output pin. For more details on the

De-Selected Input State (DSIS), see the columns of each Terminal Functions table (Section 3.3, Terminal

Functions).

Some peripheral pin functions can be routed to more than one device pin. These types of peripheral pin

functions are called Multimuxed and may have different Switching Characteristics and Timing

Requirements for each device pin option.

For more detailed information on the Pin Control 1 through Pin Control 270 (PINCNTLx) registers

breakout, see Figure 4-1 and Table 4-8.

Figure 4-1. PINCNTL1 – PINCNTL270 (PINCNTLx) Registers Breakout

RESERVED

RSV

PLLTY

PLLU

PESE

DEN

R - 0000 0000

R - 0000

R/W

RESERVED

MUXMODE[7:0]

R - 0000 0000

R/W - 0000 0000

LEGEND: R/W = Read/Write; R = Read only; -n = value after reset

110

Device Configurations

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