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PCA9548APWG4 Datasheet(PDF) 7 Page - Texas Instruments |
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PCA9548APWG4 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 27 page www.ti.com ChannelSelectionBits(Read/Write) Channel1 Channel0 Channel2 Channel3 Channel4 Channel5 Channel6 Channel7 B7 B6 B5 B4 B3 B2 B1 B0 RESET Input PCA9548A 8-CHANNEL I2C SWITCH WITH RESET SCPS143C – OCTOBER 2006 – REVISED JUNE 2007 Figure 5. Control Register Command Byte Definition CONTROL REGISTER BITS COMMAND B7 B6 B5 B4 B3 B2 B1 B0 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 Channel 4 disabled X X X X X X X 1 Channel 4 enabled 0 Channel 5 disabled X X X X X X X 1 Channel 5 enabled 0 Channel 6 disabled X X X X X X X 1 Channel 6 enabled 0 Channel 7 disabled X X X X X X X 1 Channel 7 enabled No channel selected, 0 0 0 0 0 0 0 0 power-up/reset default state The RESET input is an active-low signal that may be used to recover from a bus-fault condition. When this signal is asserted low for a minimum of tWL, the PCA9548A resets its registers and I 2C state machine and deselects all channels. The RESET input must be connected to VCC through a pullup resistor. 7 Submit Documentation Feedback Not Recommended For New Designs |
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