TNETV2840ENGGU datasheet(62/91 Pages) TI1

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Functional Overview

December 1999 − Revised October 2008

SPRS122F

Table 3−27. Bit Functions for IMR and IFR Registers for Each DSP Subsystem (Continued)

BIT

NO.

FUNCTION

BIT

VALUE

BIT

NAME

TINT

IFR/IMR: Timer has no interrupt pending/is disabled (masked).

TINT

IFR/IMR: Timer has an interrupt pending/is enabled.

Reserved

WDTINT

IFR/IMR: Watchdog interrupt has no interrupt pending/is disabled (masked).

WDTINT

IFR/IMR: Watchdog interrupt has an interrupt pending/is enabled.

INT

IFR/IMR: Ext user interrupt pin 0 has no interrupt pending/is disabled (masked).

INT

IFR/IMR: Ext user interrupt pin 0 has an interrupt pending/is enabled.

3.7

IDLE3 Power-Down Mode

The IDLE1 and IDLE2 power-down modes operate as described in the TMS320C54x DSP Reference Set,

Volume 1: CPU and Peripherals (literature number SPRU131). The IDLE3 mode is special in that the clocking

circuitry is shut off to conserve power. The 5441 cannot enter an IDLE3 mode unless all the subsystems

execute an IDLE3 instruction. The power-reduced benefits of IDLE3 cannot be realized until all the

subsystems enter the IDLE3 state and the internal clocks are automatically shut off. The order in which

subsystems enter IDLE3 does not matter.

3.8

Emulating the 5441 Device

The 5441 is a single device, but actually consists of four independent subboundary systems that contain

 has a setup wizard called

“Code Composer Setup.” The setup wizard prompts the user for the I/O address of the XDSSIO card and the

number of processors in the system. The board.dat file is then created and placed in the correct directory

automatically. The board.dat file contents would look something like this:

“CPU_D” TI320C5xx

“CPU_C” TI320C5xx

“CPU_B” TI320C5xx

“CPU_A” TI320C5xx

The subsystems are serially connected together internally. Emulation information is serially transmitted into

the device using TDI. The device responds with serial scan information transmitted out the TDO pin.

Code Composer Studio is a trademark of Texas Instruments.

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