AS3693B
austria micro systems
Digital Registers
7.7 Device address setup
The I2C and SPI – Device address can be set via PIN ADDR1 and ADDR2. The AS3693B offers 31 I2C or 32
SPI addresses, which can be set via external resistor. ADDR2 bit 2 decides if I2C or SPI interface is used.
AS3693
Flexible 6- Bit Address Programming
with 2 external resistors.
Digital
PWM - Generator
6 Bit I2C ADDRESS
ADC
Table 13– Device Address
ADDR1
R1
ADDR2
R2
Device Adress Setup:
I2C ADDRESS
I2C ADDRESS Options
Bit
Bit Name
Default
Access
Description
Lower 3 bits of device address
000 open Note: don’t use address 00h
001 320k
010 160k
2:0
Device ADDR1
000
R
011 80k
100 40k
101 20k
110 10k
111 0
Upper 3 bits of device address
000 open Note: activates I2C - mode
001 320k
010 160k
Note: activates I2C - mode
Note: activates I2C - mode
5:3
Device ADDR2
000
R
011 80k
Note: activates I2C - mode
7.7.1 I2C Device Address setup
100 40k
101 20k
110 10k
111 0
Note: activates SPI - mode
Note: activates SPI - mode
Note: activates SPI - mode
Note: activates SPI – mode
BIT 7
0
BIT 6
0 (ADDR2<2>)
BIT 5
ADDR2<1>
BIT 4
ADDR2<0>
BIT 3
ADDR1<2>
BIT 2
ADDR1<1>
BIT 1
ADDR1<0>
BIT 0
R/W
7.7.2 SPI Device Address setup
BIT 7
0
BIT 6
0
BIT 5
1 (ADDR2<2>)
BIT 4
ADDR2<1>
BIT 3
ADDR2<0>
BIT 2
ADDR1<2>
BIT 1
ADDR1<1>
BIT 0
ADDR1<0>
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Revision 1.21 / 2011-09-30
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