DS_1209F_004
73S1209F Data Sheet
Rev. 1.2
59
I2C Secondary Read Data Register (SRDR): 0XFF84
Å
0x00
Table 62: The SRDR Register
MSB
LSB
SRDR.7 SRDR.6 SRDR.5 SRDR.4 SRDR.3 SRDR.2 SRDR.1 SRDR.0
Bit Function
SRDR.7
Second Data byte to be read from the I
2
C slave device if bit 0 (I2CLEN) of the Control
and Status register (
) is set = 1.
SRDR.6
SRDR.5
SRDR.4
SRDR.3
SRDR.2
SRDR.1
SRDR.0
I2C Control and Status Register (CSR): 0xFF85
Å
0x00
Table 63: The CSR Register
MSB LSB
– – – – –
AKERR
I2CST
I2CLEN
Bit Symbol
Function
CSR.7 –
CSR.6 –
CSR.5 –
CSR.4 –
CSR.3 –
CSR.2 AKERR
Set to 1 if acknowledge bit from Slave Device is not 0. Automatically reset
when the new bus transaction is started.
CSR.1 I2CST
Write a 1 to start I
2
C transaction. Automatically reset to 0 when the bus
transaction is done. This bit should be treated as a “busy” indicator on
reading. If it is high, the serial read/write operations are not completed and
no new address or data should be written.
CSR.0
I2CLEN
Set to 1 for 2-byte read or write operations. Set to 0 for 1-byte operations.