TMS320DM6441 datasheet(25/229 Pages) TI

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TMS320DM6441

Digital Media System-on-Chip

SPRS359B – SEPTEMBER 2006 – REVISED JANUARY 2007

Table 2-6. Oscillator/PLL Terminal Functions

SIGNAL

TYPE(1)

OTHER(2)

DESCRIPTION

NAME

NO.

OSCILLATOR, PLL

MXI/

Crystal input MXI for MX oscillator (system oscillator, typically 27 MHz).

DVDD18

CLKIN

If the internal oscillator is bypassed, this is the external oscillator clock input.

MXO

DVDD18

Crystal output for MX oscillator

MXVDD

(3)

1.8V power supply for MX oscillator

MXVSS

GND

(3)

Ground for MX oscillator

M24XI

F18

DVDD18

Crystal input for M24 oscillator (24 MHz for USB)

M24XO

F19

DVDD18

Crystal output for M24 oscillator

M24VDD

F16

(3)

1.8V power supply for M24 oscillator

M24VSS

F17

GND

(3)

Ground for M24 oscillator

PLLVDD18

(3)

1.8 Volt power supply for PLLs (system and USB)

APLLREFV

(3)

Core voltage reference for PLL logic

(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

(3)

For more information, see the Recommended Operating Conditions table

Table 2-7. Clock Generator Terminal Functions

SIGNAL

TYPE(1)

OTHER(2)

DESCRIPTION

NAME

NO.

CLOCK GENERATOR

This pin is multiplexed between the PLL1 clock generator and GPIO.

CLK_OUT0/

I/O/Z

DVDD18

For the PLL1 clock generator, it is clock output CLK_OUT0. This is configurable for

GPIO48

13.5 MHz or 27 MHz clock outputs.

CLK_OUT1/

This pin is multiplexed between the USB clock generator, timer, and GPIO.

TIM_IN/

E19

I/O/Z

DVDD18

For the USB clock generator, it is clock output CLK_OUT1. This is configurable for

GPIO49

12 MHz or 24 MHz clock outputs.

(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 2-8. RESET and JTAG Terminal Functions

SIGNAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

NAME

NO.

RESET

IPU

RESET

This is the active low global reset input.

DVDD18

JTAG

IPU

TMS

JTAG test-port mode select input

DVDD18

–

TDO

O/Z

JTAG test-port data output

DVDD18

IPU

TDI

JTAG test-port data input

DVDD18

IPU

TCK

JTAG test-port clock input

DVDD18

–

RTCK

O/Z

JTAG test-port return clock output

DVDD18

(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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