TMS320C6421 datasheet(36/59 Pages) TI

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TMS320C6421

Fixed-Point Digital Signal Processor

SPRS346A – JANUARY 2007 – REVISED MARCH 2007

Table 2-18. I2C Terminal Functions

SIGNAL

TYPE(1)

OTHER(2)(3)

DESCRIPTION

ZWT

ZDU

NAME

NO.

I2C

For I2C, this pin is I2C clock. In I2C master mode, this pin is an

output. In I2C slave mode, this pin is an input.

SCL

I/O/Z

DVDD33

When the I2C module is used, for proper device operation, this pin

must be pulled up via an external resistor.

For I2C, this pin is the I2C bi-directional data signal.

SDA

I/O/Z

DVDD33

When the I2C module is used, for proper device operation, this pin

must be pulled up via an external resistor.

(1)

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

(2)

IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup/pulldown resistors and situations where external

pullup/pulldown resistors are required, see Section 3.2.1, Pullup/Pulldown Resistors.

(3)

Specifies the operating I/O supply voltage for each signal

Device Overview

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