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PCA9641PW Datasheet(PDF) 19 Page - NXP Semiconductors

Part # PCA9641PW
Description  2-channel I2C-bus master arbiter
PDF  55 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

PCA9641PW Datasheet(HTML) 19 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
19 of 55
NXP Semiconductors
PCA9641
2-channel I2C-bus master arbiter
Fig 9.
Request downstream with reserve time
W
P
S
S
Sr
P
S
P
S
P
P
S
LOC_GNT master 1
Master 1
Master 0
Grant
CURR_RES_TIME
0
0x1F
0x1E
M0
< 30 ms
none
9641
Addr
Pointer
0x81
AI = 1
B[2:0] = 1
CONTR
0x25
Pointer
0x81
W
9674
Addr
CONTR
0x05
RT
RT
0x1F
0x00
AI = 1
B[2:0] = 1
Reserve
Time = 31 ms
Reserve
Time = 0 ms
W
9641
Addr
Pointer
0xXX
9674
Addr
R
CONTR
0x66
RT
0x1F
CRT
0x1F
100 ms
time-out
does not
apply while
Reserve Time
is not expired
0x00
100 ms
M1
Reserve Time
is running out.
At last STOP,
the Grant
will switch.
IDLE_TIMER_DIS = 1
BUS_CONNECT = 1
LOC_REQ = 1
INIT = 0
BUS_CONNECT = 1
LOC_REQ = 1
aaa-014387



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