TCA5013 Datasheet, PDF (41/68 Pages) Texas Instruments – Feature Rich Smartcard Interface IC

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Programming (continued)
TCA5013
SCPS253B – JANUARY 2014 – REVISED JANUARY 2016
S
DEVICE ADDRESS
W A AI
REGISTER ADDRESS
AP
S
DEVICE ADDRESS
RA
REGISTER DATA
A
REGISTER DATA*
A
2^nd and subsequent bytes of Register data are read from the next register if Auto increment is enabled (AI=1)
2^nd and subsequent bytes of register data are ignored if auto increment is disabled (AI=0).
SDA line is controlled by
Master
SDA line is controlled by
Slave
Figure 24. I²C Read Procedure
S
DEVICE ADDRESS
W A AI
REGISTER ADDRESS
A
Sr
DEVICE ADDRESS
RA
REGISTER DATA
A
REGISTER DATA*
A
2^nd and subsequent bytes of Register data are read from the next register if Auto increment is enabled (AI=1)
2^nd and subsequent bytes of register data are ignored if auto increment is disabled (AI=0).
SDA line is controlled by
Master
SDA line is controlled by
Slave
Figure 25. I²C Read Procedure with Repeated Start
8.5.1.2 I²C Address Configuration
The I²C address of the TCA5013 can be configured using the A0. The A0 pin shall be connected to VDDI or
GND to select one of the addresses, as shown in Table 11. The last bit in the address byte defines the operation
(read or write)
A0
GND
VDDI
Table 11. TCA5013 I²C address selection
SLAVE ADDRESS
I²C BUS SLAVE ADDRESS
B7
B6
B5
B4
B3
B2
B1
B0
0
1
1
1
0
0
1
W/R
Write - 72(h), Read – 73(h)
0
1
1
1
1
1
0
W/R
Write - 7C(h), Read – 7D(h)
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