LC89058W-E Datasheet, PDF (32/64 Pages) Sanyo Semicon Device – Digital Audio Interface Receiver

LC89058W-E
10.3.4 Data block diagram (RX0 to RX6, RXOUT1, RXOUT2, RDATA, SDIN)
• Select the demodulated data and the SDIN input data with RDTSEL and RDTSTA, and mute processing can be
performed with RDTMUT.
• Moreover, GPIO0 input data can be selected with EXTSEL. Also, GPIO0 can be subject to mute processing with
EDTMUT. See Chapter 11 for the selector function for the general-purpose I/O pins (GPIO0 to GP1O3).
RX0
RX1
RX2
RX3
RX4
RX5
RX6
SDIN
GPIO3
“ROSEL[2:0]”
MUX
S/PDIF
“ROSEL[2:0]=111”
RXOUT1
“RXSEL[2:0]”
“RISEL[2:0]”
DIR
S/PDIF
“RXSEL[2:0]=111”
RXOUT2
“RDTSEL”
“RDTSTA”
“RDTMUT”
“EXTSEL”
RDATA
“EDTMUT”
Figure 10.11 Data System Diagram
10.3.5 Calculation of input data sampling frequency (MOUT)
• The input data sampling frequency is calculated using the XIN clock.
• In the mode where the oscillation amplifier automatically stops according to the lock status of the PLL, the input data
sampling frequency is calculated during the RERR error period and completed when the oscillation amplifier stops
with holding the value. Therefore, the value remains unchanged until the PLL becomes unlocked.
• If the oscillation amplifier is in a continuous operation mode, calculation is repeated constantly. Even if sampling
changes within the PLL capture range for input data whose channel status sampling information does not change, the
calculation results that follow the input data can be read.
• The calculation results can be readout via MOUT pin or with the microcontroller interface. Since the MOUT pin is
also used to generate the emphasis information, set the contents of the MOUT pin output by MOSEL. The fs
calculation output to the MOUT pin is limited. The FSSEL[1:0] sets the contents of the MOUT pin output.
FSSEL1
0
0
1
1
Table 10.5: MOUT Pin Output Mode Settings
FSSEL0
MOUT Pin H Output Conditions
0
When calculating 32kHz, 44.1kHz or 48kHz
1
When calculating 88.2kHz or 96kHz
0
When calculating 176.4kHz or 192kHz
1
When calculating 88.2kHz, 96kHz or higher
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