LC89091JA Datasheet, PDF (17/30 Pages) ON Semiconductor – Digital Audio Interface Receiver

LC89091JA
8.8 General Purpose Output (GPO)
 The GPO output can be selected the following outputs by the GPOSEL[1:0] register.
8.8.1 Channel Status Bit 1 Output ("GPOSEL[1:0]=00")
 The initial mode outputs bit 1 of the channel status that indicates whether the input bi-phase data is PCM audio data.
It is immediately output upon detection of ERR even during an error output period.
GPO output
L
H
Table 8.6: Channel Status Bit 1 Output
GPO output conditions
Audio sample word represents linear PCM samples (Bit1=L)
Audio sample word used for other purposes (Bit 1=H)
8.8.2 S/PDIF Through-output ("GPOSEL[1:0]=01")
 The data selected by the S/PDIF input selector (DINSEL register) is output.
The output data is selected with the THRSEL register.
GPO output
RXIN or MPIO input data
Table 8.7: Output of S/PDIF data
GPO output conditions
"GPOSEL[1:0]=01"
8.8.3 Microcontroller Register Output ("GPOSEL[1:0]=10 or 11")
 This mode outputs a serial data that is set by the microcontroller interface.
It can be used as a control signal of peripheral circuitry.
GPO output
L
H
Table 8.8: Microcontroller Register Output
GPO output conditions
"GPOSEL[1:0]=10"
"GPOSEL[1:0]=11"
IN0
Out
IN1
157 etc
HCU04
HCU04
IN0
Out
IN1
157 etc
LC89091JA
RXIN
GPO
MPIO
Figure 8.10: GPOSEL [1:0] register Example of Use
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