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PCA9641PW 数据表(PDF) 35 Page - NXP Semiconductors

部件名 PCA9641PW
功能描述  2-channel I2C-bus master arbiter
PDF  55 Pages
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

PCA9641PW 数据表(HTML) 35 Page - NXP Semiconductors

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PCA9641
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 2.1 — 27 October 2015
35 of 55
NXP Semiconductors
PCA9641
2-channel I2C-bus master arbiter
16.3 Masters with shared resources
Some masters may not be multi-master capable or some masters may not work well
together and continually lock up the bus. The PCA9641 can be used to separate the
masters, as shown in Figure 24, but still allow shared access to slave devices, such as
Field Replaceable Unit (FRU) EEPROMs or temperature sensors.
Fig 23. Very high reliability backplane application
002aag821
SCL1
SDA1
SCL0
SDA0
SCL0
SDA0
SCL0
SDA0
SCL0
SDA0
SCL1
SDA1
SCL1
SDA1
SCL1
SDA1
Fig 24. Masters with shared resources application
002aag822
PCA9641
SLAVE A0
SLAVE A1
SLAVE A2
MASTER A
PCA9641
SLAVE B0
SLAVE B1
SLAVE B2
MASTER B
ASSEMBLY A
ASSEMBLY B
SDA/SCL
SDA/SCL
MAIN
MASTER



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