PCA9504A 데이터 시트보기 (PDF) - Philips Electronics

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PCA9504A

8-bit I2C and SMBus I/O port with 2-kbit EEPROM

Philips Electronics 

Philips Semiconductors

Glue chip 4

Product data

PCA9504A

AUDIO-DISABLE

AUD_EN

0

0

1

1

PCIRST

0

1

0

1

AUD_RST

0

0

0

1

MUTE AUDIO CIRCUIT

MUTE_AUD

0

1

AUD_SHDN

1

0

HD SINGLE COLOR LED DRIVER

PRIMARY_HD

0

0

X

X

1

SECONDARY_HD

0

X

0

X

1

SCSI

0

X

X

0

1

HD_LED

0

0

0

0

HI–Z

IDE RESET SIGNAL GENERATION AND PCRIST DRIVE STRENGTH

PCIRST

IDE_RSTDRV1

0

0

1

1

NOTE:

1. IDE_RSTDRV is a 5 V copy of PCIRST. PCIRST_OUT is a 3.3 V copy of PCIRST.

PWRGD SIGNAL GENERATION

FPRST

PWRGD_PS

0

0

0

1

1

0

1

1

PCIRST_OUT

0

1

PWRGD_3V

0

0

0

1

FLUSH_OUT / INIT_OUT CIRCUIT

CASE A20M GPO_FLUSH_CACHE

INIT

FLUSH_OUT_CPU FLUSH_OUT_FWH

INIT_OUT

1

1

Falling edge

0

0(for t1)

0(for t1)

0, Hi-Z, then 0 (delayed by

t1-t, then active for 2*t)

2

1

Falling edge

1

0(for t1)

0(for t1)

Hi-Z, 0 (delayed by t1-t,

then active for 2*t)

3

X

1

0

Hi-Z

Hi-Z

0

4

X

1

1

Hi-Z

Hi-Z

Hi-Z

5

0

Falling edge

1

Hi-Z

Hi-Z

Hi-Z

6

0

Falling edge

0

Hi-Z

Hi-Z

0

CLK_IN AND SEL_33_66

SEL_33_66

0

1

CLK_IN RATE

66 MHz

33 MHz

2004 May 11

24

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