pca9541bs/03 NXP Semiconductors, pca9541bs/03 Datasheet - Page 25
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pca9541bs/03
Manufacturer Part Number
pca9541bs/03
Description
2-to-1 I2c Master Selector With Interrupt Logic And Reset
Manufacturer
NXP Semiconductors
Datasheet
1.PCA9541BS03.pdf
(43 pages)
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NXP Semiconductors
10. Application design-in information
PCA9541_5
Product data sheet
10.1 Specific applications
The PCA9541 is a 2-to-1 I
I
even if one master fails or its controller card is removed for maintenance. The PCA9541
can also be used in other applications, such as where masters share the same resource
but cannot share the same bus, as a gatekeeper multiplexer in long single bus
applications or as a bus initialization/recovery device.
2
Fig 17. Typical application
C-bus applications, where continuous maintenance and control monitoring is required
3.3 V
3.3 V
MASTER 0
MASTER 1
RESET0
RESET1
V
V
V
V
DD
DD
SS
SS
SDA0
SDA1
SCL0
SCL1
INT0
INT1
Rev. 05 — 1 October 2007
2-to-1 I
2
C-bus master selector designed for dual master, high reliability
2
C-bus master selector with interrupt logic and reset
SCL_MST0
SDA_MST0
INT0
RESET
SCL_MST1
SDA_MST1
INT1
A3
A2
A1
A0
PCA9541
V
V
SDA_SLAVE
SCL_SLAVE
DD
SS
INT_IN
SDA
SLAVE 1
SCL
SDA
INT
SLAVE 2
PCA9541
© NXP B.V. 2007. All rights reserved.
SCL
SDA
SLAVE CARD
SLAVE 3
002aab611
SCL
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