TMS320C51 datasheet(11/87 Pages) TI

11 / 87 page

TMS320C5x, TMS320LC5x

DIGITAL SIGNAL PROCESSORS

SPRS030A – APRIL 1995 – REVISED APRIL 1996

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

Pin Functions for Devices in the PZ Package (Continued)

SIGNAL

TYPE

DESCRIPTION

TDM SERIAL PORT INTERFACE

TDR

TDM serial receive-data input

TDX

O/Z

TDM serial transmit-data output. In high-impedance state when not transmitting

TCLKR

TDM serial receive-data clock input

TCLKX

I/O/Z

TDM serial transmit-data clock. Internal or external source

TFSR / TADD

I/O/Z

TDM serial receive-frame-synchronization input. In the TDM mode, TFSR / TADD is used to output /

input the address of the port

TFSX / TFRM

TDM serial transmit-frame-synchronization signal. Internal or external source. In the TDM mode,

TFSX / TFRM becomes TFRM, the TDM frame sync.

EMULATION/JTAG INTERFACE

TDI

JTAG-test-port scan data input

TDO

O/Z

JTAG-test-port scan data output

TMS

JTAG-test-port mode select input

TCK

JTAG-port clock input

TRST

JTAG-port reset (with pull-down resistor). Disables JTAG when low

EMU0

I/O/Z

Emulation control 0. Reserved for emulation use

EMU1 / OFF

I/O/Z

Emulation control 1. Puts outputs in high-impedance state when low

CLOCK GENERATION AND CONTROL (SEE NOTE 2)

Oscillator output

X2 / CLKIN

Clock/oscillator input (PLL clock input for ’C56)

CLKIN2

Clock input (PLL clock input for ’C50, ’C51, ’C52, ’C53, ’C53S)

CLKMD1, CLKMD2,

CLKMD3

Clock-mode select inputs

CLKOUT1

O/Z

Device system-clock output

POWER SUPPLY CONNECTIONS

VDDA

Supply connection, address-bus output

VDDD

Supply connection, data-bus output

VDDC

Supply connection, control output

VDDI

Supply connection, internal logic

VSSA

Supply connection, address-bus output

VSSD

Supply connection, data-bus output

VSSC

Supply connection, control output

VSSI

Supply connection, internal logic

LEGEND:

I = Input

O = Output

S = Supply

Z = High impedance

NOTE 2: CLKIN2 pin is replaced by CLKMD3 pin on ’LC56 devices.

TMS320C51 Datasheet(PDF) 11 Page - Texas Instruments

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