SLAS763C August 2012 – October 2018 PCM5121 , PCM5122
PRODUCTION DATA.
A master can read the PCM512x register. The value of the register address is stored in an indirect index register in advance. The master sends a PCM512x slave address with a read bit after storing the register address. Then the PCM512x transfers the data which the index register points to. When auto-increment is enabled, the index register is incremented by 1 automatically. When the index register reaches 0x7F, the next value is 0x0. Table 43 shows the read operation.
Transmitter | M | M | M | S | M | S | M | M | M | S | S | M | M | M | ||
Data Type | St | slave addr | W | ACK | inc | reg addr | ACK | Sr | slave addr | R | ACK | data | ACK | NACK | Sp |
M = Master Device; S = Slave Device; St = Start Condition; Sr = Repeated Start Condition; Sp = Stop Condition; W = Write; R = Read; NACK = Not acknowledge