Application information

VM6101

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2.4.2

Alternate slave address selection

After power-on or after resuming from power-down, the 7-bit slave address is 0x10. If

another slave device shares the same address, it is possible to remap the VM6101 to

address 0x11 by performing the following operations:

1.

2.

After power-on or power-down resume, issue a write command to set the ADDR_SEL

bit of CONTROL register (i.e. write 0x10 at register address 0x02, slave address 0x10).

3.

At this time, the VM6101 samples the INT pin and sets its slave address accordingly:

INT sampled low: 7-bit address = 0x10,

INT sampled high: 7-bit address = 0x11.

Two VM6101 can thus coexist on the same bus; one should have its INT pin pulled low, the

other one should have its INT pin pulled high (see

Figure 5.).

3

Application information

Figure 5.

Application diagram

Host Microcontroller

VM6101

SCL

SDA

INT

VDD

GND

PD

+3.3V

SCL

SDA

GPIO0

GPIO1

+3.3V

GPIO2

GPIO3

TEST

AMUX

NC

VM6101

SCL

SDA

INT

VDD

GND

PD

+3.3V

TEST

AMUX

NC

+3.3V

I²C 7-bit addr = 0x10

I²C 7-bit addr = 0x11

Optional