TMS320DM6446 datasheet(47/231 Pages) TI

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TMS320DM6446

Digital Media System-on-Chip

SPRS283E – DECEMBER 2005 – REVISED MARCH 2007

Table 2-23. PWM0, PWM1, PWM2 Terminal Functions

SIGNAL

TYPE(1)

OTHER(2)

DESCRIPTION

NAME

NO.

PWM2

PWM2/

This pin is multiplexed between PWM2, VPBE, and GPIO.

B2/

A15

I/O/Z

DVDD18

For PWM2, it is output PWM2.

GPIO47

PWM1

PWM1/

This pin is multiplexed between PWM1, VPBE, and GPIO.

R2/

B15

I/O/Z

DVDD18

For PWM1, it is output PWM1.

GPIO46

PWM0

PWM0/

This pin is multiplexed between PWM0 and GPIO.

C15

I/O/Z

DVDD18

GPIO45

For PWM0, it is output PWM0.

(1)

I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal

(2)

Specifies the operating I/O supply voltage for each signal

Table 2-24. ATA/CF Terminal Functions

SIGNAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

NAME

NO.

ATA/CF

SPI_EN1/

This pin is multiplexed between SPI, ATA, and GPIO.

HDDIR/

I/O/Z

DVDD18

For ATA, it is buffer direction control output HDDIR.

GPIO42

GPIO50/

This pin is multiplexed between GPIO and ATA/CF.

DVDD18

ATA_CS0

In ATA mode, it is ATA/CF chip select output ATA_CS0.

GPIO51/

This pin is multiplexed between GPIO and ATA/CF.

DVDD18

ATA_CS1

In ATA mode, it is ATA/CF chip select output ATA_CS1.

EM_R/W/

This pin is multiplexed between EMIFA and ATA/CF.

DVDD18

INTRQ

For ATA/CF, it is interrupt request input INTRQ.

EM_WAIT/

IPU

This pin is multiplexed between EMIFA (NAND/SmartMedia/xD) and ATA/CF.

(RDY/BSY)/

DVDD18

For ATA/CF, it is IO Ready input IORDY.

IORDY

EM_OE/

This pin is multiplexed between EMIFA (NAND/SmartMedia/xD) and ATA/CF.

(RE)/

DVDD18

For CF, it is read strobe output (IORD).

(IORD)/

For ATA, it is read strobe output DIOR.

DIOR

EM_WE

This pin is multiplexed between EMIFA (NAND/SmartMedia/xD) and ATA/CF.

(WE)

DVDD18

For CF, it is write strobe output (IOWR).

(IOWR)/

For ATA, it is write strobe output DIOW.

DIOW

DMACK/

This pin is multiplexed between ATA/CF and UART1.

DVDD18

UART_TXD1

For ATA/CF, it is DMA acknowledge output DMACK.

DMARQ/

IPD

This pin is multiplexed between ATA/CF and UART1.

UART_RXD1

DVDD18

For ATA/CF, it is DMA request DMARQ input.

(1)

I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal

(2)

IPD = Internal pulldown, IPU = Internal pullup. (To pull up a signal to the opposite supply rail, a 1-k

Ω resistor should be used.)

(3)

Specifies the operating I/O supply voltage for each signal

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