W83194BR-703 Просмотр технического описания (PDF) - Winbond

Номер в каталоге

Компоненты Описание

Список матч

W83194BR-703

STEPLESS CLOCK FOR SIS 741 CHIPSET

Winbond 

W83194BR-703/W83194BG-703

7.6 Register 5: Watchdog Control (Default: 04h)

BIT

NAME

PWD

DESCRIPTION

7 SEL24_48

X

24 / 48 MHz output selection, 1: 24 MHz 0: 48 MHz (Default), Default

value follow hardware trapping data on SEL24_48# pin.

Program this bit =>

6 CNT_EN

1: Enable Watchdog Timer feature.

0: Disable Watchdog Timer feature.

0

Read-back this bit =>

During timer count down the bit read back to 1.

If count to zero, this bit read back to 0.

Read Back only. Timeout Flag. This bit is Read Only.

5 WD_TIMEOUT 0 1: Watchdog has ever started and counts to zero.

0: Watchdog is restarted and counting.

4 SAF_FREQ [4] 0

3 SAF_FREQ [3] 0

2

SAF_FREQ [2]

1

These bits will be reloaded in Reg-0 to select frequency table. As the

watchdog is timeout and EN_SAFE_FREQ=1.

1 SAF_FREQ [1] 0

0 SAF_FREQ [0] 0

7.7 Register 6: Skew Control (Default: 25h)

BIT

NAME PWD

DESCRIPTION

7 Reserved

0 Reserved

6 Reserved

0 Reserved

5 Reserved

1

4 Reserved

0 Reserved

3 Reserved

0

2 CSKEW<2>

1 CSKEW<1>

0 CSKEW<0>

1 CPU1 to CPU0 skew control

0 Skew resolution is 250ps

1 The decision of skew direction is same as CSKEW<2:0> setting

-10-

Share Link: