MK1491-06 Просмотр технического описания (PDF) - Integrated Circuit Systems

Номер в каталоге

Компоненты Описание

производитель

MK1491-06

AMD Geode™ Clock Source

Integrated Circuit Systems 

MK1491-06

AMD Geode™ Clock Source

Power Down Control Table

PCISTP# PWRDWN# SLOW# MODE PCI

X

0

X

Power down LOW

0

1

X

PCI STOP LOW

1

1

X

ON

ON

PCIF

LOW

ON

ON

24/14.3

LOW

ON

ON

14.3

LOW

ON

ON

Description

All outputs low. PLL’s

and oscillators off.

PCI clocks

synchronously enter

and leave low state.

All clocks on.

Key: 1 = connected to VDD, 0 = connected to ground, X = any valid logic level, combination inputs/outputs

should be connected to VDD or ground through a 10 kΩ resistor as shown below.

Power-on Default Conditions

Pin #

5

8

10

12

13

15

16

21

22

28

Function

TS

SEL AUDIO

SLOW#

FS

SEL 24

PWRDWN#

PCISTP#

LE#

EPCI#

PEN

Default

Condition

M All outputs enabled.

M Audio clock (pin 28) set to 24.576 MHz

1

PCI clocks set to 33.3 MHz. Refer to Power Down Control Table above.

1

PCI frequency = 33.3 MHz.

1

24M/14.3M (pin 19) set to 24 MHz.

1

All clocks running.

1

PCI clocks running.

1

Low EMI function OFF

1

Pin 22 set to normal PCI signal (not early).

M PCI (pin 25) set to PCI clock (33.33 MHz). PCI (pin 24) set to PCIF clock

(33.33 MHz).

MDS 1491-06 J

4

Revision 110204

Integrated Circuit Systems, Inc. ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com

Share Link: