LC89091JA Datasheet, PDF (3/30 Pages) ON Semiconductor – Digital Audio Interface Receiver

4. Pin Assignment
LC89091JA
SCL 1
SDA ²
ERR 3
GPO 4
RXIN ⁵
MPIO 6
LPF 7
GND ⁸
16 VDD
15 _SDIN
14 XOUT
13 XIN
12 _DATAO
11 LRCKO
10 BCKO
9 _MCKO
Figure 4.1: LC89091JA Pin Assignment
5. Pin Functions
No
Name
1
SCL
2
SDA
Table 5.1: Pin Functions
I/O
Function
I
Microcontroller interface I²C: clock input pin
I
Microcontroller interface I²C: data input pin
O
Microcontroller interface I²C: data output pin
3
ERR
PLL lock error and data error flag output pin (initial output)
O
Output data mute signal output pin
Channel status bit-1 (PCM or non-PCM flag) output pin (initial output)
4
GPO
O
Input S/PDIF (RXIN or MPIO) through output pin
General purpose output pin
5
RXIN
I
3.3V tolerance TTL-compatible S/PDIF input pin
6
MPIO
O
Channel status emphasis flag output pin (initial output)
I
3.3V tolerance TTL-compatible S/PDIF input pin
7
LPF
O
PLL: Loop filter connection output pin
8
GND
Digital GND
9
MCKO
O
Master clock output pin (512fs, 256fs, and 128fs)
10
BCKO
O
Bit clock output pin (64fs)
11
LRCKO
12
DATAO
O
LR clock output pin (fs)
O
Serial audio data output pin (I²S and left justified)
13
XIN
I
Crystal resonator connection or external clock input pin (24.576MHz)
14
XOUT
O
Crystal resonator connection output pin
15
SDIN
I
Serial audio data input pin
16
VDD
Digital power supply (3.3V)
*Pin.2 and Pin 6 configure an open-drain output.
*Pin.2 needs a pull-up resistor when using microcontroller interface.
*Pin.6 needs a pull-up resistor when set to the output.
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