PCA9500D View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
PCA9500D Datasheet PDF : 26 Pages
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NXP Semiconductors
PCA9500
8-bit I2C-bus and SMBus I/O port with 2-kbit EEPROM
9. Application design-in information
A central processor/controller typically located on the system main board can use the
400 kHz I2C-bus/SMBus to poll the PCA9500 devices located on the system cards for
status or version control type of information. The PCA9500 may be programmed at
manufacturing to store information regarding board build, firmware version, manufacturer
identification, configuration option data, and so on. Alternately, these devices can be used
as convenient interface for board configuration, thereby utilizing the I2C-bus/SMBus as an
intra-system communication bus.
up to
8 cards
CPU
OR
µC
I2C-bus BACKPLANE
I2C-bus
I2C-bus
I2C-bus
I2C-bus
I2C-bus
ASIC
configuration control
PCA9500
CONTROL
EEPROM
GPIO
monitoring
and
control
INPUTS
ALARM
LEDs
card ID, subroutines, configuration data, or revision history
002aae586
Fig 19. PCA9500 used as interface for board configuration
PCA9500_4
Product data sheet
Rev. 04 — 15 April 2009
© NXP B.V. 2009. All rights reserved.
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