Rainbow Electronics ISD5216 - Manual (Page 18)

I5216 SERIES
Advanced Information
PRELIMINARY
Publication Release Date: November 30, 2001
-18 Revision A1
I
2
C SLAVE ADDRESS
The I5216 has a 7 bit slave address of <100 00xy> where x and y are equal to the state, respectively,
of the external address pins A1 and A0. Because all data bytes are required to be 8 bits, the LSB of the
address byte is the Read/Write selection bit that tells the slave whether to transmit or receive data.
Therefore, there are eight possible slave addresses for the I5216
A1 A0 Slave Address R/W\
Bit
HEX Value
0 0 <100 00 00> 0 80
0 1 <100 00 01> 0 82
1 0 <100 00 10> 0 84
1 1 <100 00 11> 0 86
0 0 <100 00 00> 1 81
0 1 <100 00 01> 1 83
1 0 <100 00 10> 1 85
1 1 <100 00 11> 1 87
To use more than four I5216 devices in an application requires some external switching of the I
2
C link.