TCA9546A Datasheet, PDF (15/31 Pages) Texas Instruments – Low Voltage 4-Channel I2C and SMBus Switch with Reset Function

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TCA9546A
SCPS205A – APRIL 2014 – REVISED FEBRUARY 2015
Control Register (continued)
Table 1. Control Register Write (Channel Selection), Control Register Read (Channel Status)⁽¹⁾
B7
B6
B5
B4
B3
B2
B1
B0
COMMAND
0
Channel 0 disabled
X
X
X
X
X
X
X
1
Channel 0 enabled
0
Channel 1 disabled
X
X
X
X
X
X
X
1
Channel 1 enabled
0
Channel 2 disabled
X
X
X
X
X
X
X
1
Channel 2 enabled
0
Channel 3 disabled
X
X
X
X
X
X
X
1
Channel 3 enabled
0
0
0
0
0
0
0
0
No channel selected,
power-up/reset default state
(1) Several channels can be enabled at the same time. For example, B3 =0, B2 = 1, B1 = 1, B0 = 0 means that channels 0 and 3 are
disabled, and channels 1 and 2 are enabled. Care should be taken not to exceed the maximum bus capacity.
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