TMS320VC5502 datasheet(69/189 Pages) TI

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TMS320VC5502

Fixed-Point Digital Signal Processor

SPRS166H – APRIL 2001 – REVISED NOVEMBER 2004

3.10.5.8

Oscillator Wakeup Control Register (WKEN)

This register controls whether different events in the system are enabled to wake up the device after

entering OSCPWRDN.

Reserved

R, 00000000

Reserved

WKEN4

WKEN3

WKEN2

WKEN1

WKEN0

R, 000

R/W, 1

LEGEND: R = Read, W = Write, n = value at reset

Figure 3-22. Oscillator Wakeup Control Register Layout (0x1C98)

Table 3-20. Oscillator Wakeup Control Register Bit Field Description

BIT NAME

BIT NO.

ACCESS

RESET VALUE

DESCRIPTION

Reserved

15:5

00000000000

Reserved. Reads return 0. Writes have no effect.

WKEN4

R/W

Input INT3 can wake up the oscillator when the OSCPWRDN bit in

PLLCSR is asserted to logic 1.

•

WKEN4 = 0:

Wake-up enabled. A low-to-high transition on INT3 wakes up the

oscillator and clears the OSCPWRDN bit.

•

WKEN4 = 1:

Wake-up disabled. A low-to-high transition on INT3 does not wake

up the oscillator.

WKEN3

R/W

Input INT2 can wake up the oscillator when the OSCPWRDN bit in

PLLCSR is asserted to logic 1.

•

WKEN3 = 0:

Wake-up enabled. A low-to-high transition on INT2 wakes up the

oscillator and clears the OSCPWRDN bit.

•

WKEN3 = 1:

Wake-up disabled. A low-to-high transition on INT2 does not wake

up the oscillator.

WKEN2

R/W

Input INT1 can wake up the oscillator when the OSCPWRDN bit in

PLLCSR is asserted to logic 1.

•

WKEN2 = 0:

Wake-up enabled. A low-to-high transition on INT1 wakes up the

oscillator and clears the OSCPWRDN bit.

•

WKEN2 = 1:

Wake-up disabled. A low-to-high transition on INT1 does not wake

up the oscillator.

WKEN1

R/W

Input INT0 can wake up the oscillator when the OSCPWRDN bit in

PLLCSR is asserted to logic 1.

•

WKEN1 = 0:

Wake-up enabled. A low-to-high transition on INT0 wakes up the

oscillator and clears the OSCPWRDN bit.

•

WKEN1 = 1:

Wake-up disabled. A low-to-high transition on INT0 does not wake

up the oscillator.

Functional Overview

TMS320VC5502 Datasheet(PDF) 69 Page - Texas Instruments

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