TMX320C6745PTP2 datasheet(21/203 Pages) TI

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3.6 Terminal Functions

3.6.1

Device Reset and JTAG

3.6.2

High-Frequency Oscillator and PLL

TMS320C6745/6747 Floating-point Digital Signal Processor

www.ti.com

SPRS377B – SEPTEMBER 2008 – REVISED DECEMBER 2008

to identify the external signal names, the associated pin/ball numbers along with the mechanical package

designator, the pin type (I, O, IO, OZ, or PWR), whether the pin/ball has any internal pullup/pulldown

resistors, whether the pin/ball is configurable as an IO in GPIO mode, and a functional pin description.

Table 3-4. Reset and JTAG Terminal Functions

PIN NO

SIGNAL NAME

TYPE(1)

PULL(2)

DESCRIPTION

PTP

ZKB

RESET

146

Device reset input

AMUTE0/RESETOUT

O(3)

IPD

Reset output. Multiplexed with McASP0 mute output.

JTAG

TMS

152

IPU

JTAG test mode select

TDI

153

IPU

JTAG test data input

TDO

156

IPD

JTAG test data output

TCK

155

IPU

JTAG test clock

TRST

150

IPD

JTAG test reset

EMU[0]

I/O

IPU

Miscellaneous emulation pin.

GP7[14]

157

I/O

IPU

General-Purpose IO signal.

(1)

I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.

Note: For multiplexed pins where functions have different types (ie., input versus output), the table reflects the pin function direction for

that particular peripheral.

(2)

IPD = Internal Pulldown resistor, IPU = Internal Pullup resistor

(3)

Open drain mode for RESETOUT function.

Table 3-5. High-Frequency Oscillator and PLL Terminal Functions

PIN NO

SIGNAL NAME

TYPE(1)

PULL(2)

DESCRIPTION

PTP

ZKB

EMA_CLK/OBSCLK/AHCLKR

R12

IPU

PLL Observation Clock

2/GP1[15]

1.2-V OSCILLATOR

OSCIN

143

Oscillator input

OSCOUT

145

Oscillator output

OSCVSS

144

GND

Oscillator ground (for filter only)

1.2-V PLL

PLL0_VDDA

141

PWR

PLL analog VDD (1.2-V filtered supply)

PLL0_VSSA

142

GND

PLL analog VSS (for filter)

(1)

I = Input, O = Output, I/O = Bidirectional, Z = High impedance, PWR = Supply voltage, GND = Ground, A = Analog signal.

Note: For multiplexed pins where functions have different types (ie., input versus output), the table reflects the pin function direction for

that particular peripheral.

(2)

IPD = Internal Pulldown resistor, IPU = Internal Pullup resistor

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