PCA9558 PHILIPS [NXP Semiconductors], PCA9558 Datasheet - Page 12

• Manufacturer Part Number: PCA9558
• Description: 8-bit I2C and SMBus I/O port with 5-bit multiplexed/1-bit latched 6-bit I2C EEPROM and 2 k bit EEPROM
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Semiconductors
TYPICAL APPLICATION
Applications
A central processor/controller typically located on the system main
board can use the 400 kHz I
located on the system cards for status or version control type of
information. The PCA9558 may be programmed at manufacturing to
store information regarding board build, firmware version,
2002 May 24
Board version tracking and configuration
Board health monitoring and status reporting
8-bit I
latched 6-bit I
CPU
OR
C
2
MULTIPLEXER
C and SMBus I/O port with 5-bit multiplexed/1-bit
PHILIPS I
4 CHANNEL
I
2
C
2
C
PCA9544
2
C EEPROM and 2 k bit EEPROM
2
C/SMBus to poll the PCA9558 devices
I
I
I
I
2
2
2
2
C
C
C
C
Figure 16. Typical application
CARD ID, SUBROUTINES, CONFIGURATION DATA, OR REVISION HISTORY
12
manufacturer identification, configuration option data
these devices can be used as convenient interface for board
configuration, thereby utilizing the I
communication bus.
Multi–card systems in Telecom, Networking and Base Station
Infrastructure Equipment
Field recall and troubleshooting functions for installed boards
General–purpose integrated I/O with DIP switch and memory
CONTROL
EEPROM
ASIC
MUXED
EEPROM
GPIO
CONFIGURATION SETTINGS
DIP SWITCH OR JUMPER REPLACEMENT
MONITORING
CONTROL
2
C/SMBus as an intra–system
PCA9558
AND
PCA9558
INPUTS
ALARM
LEDs
Alternately,
Product data
SW01080