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22
@Pin Functions (M51581FP)
Pin No.| PinName
| 1/O
[Function and Operation
|
1{/ T™
OQ ___| Digital audio interface format output
| ___2|
RESE
|
Reset input
|
3| RX1__—s«|_—1 _[ Digital audio data input 1
-— 4 ee
O
RX1 level converter output
RX2
I
Digital audio data input 2
| 6}
RXSEL
I
RX select input
Phase comparative output for charge pump VCO
a]
-
UNLOCK
O
_[Unlock detect output
RXCKi
I
VCO clock input
11 | RXCKO
O___|VCO clock output
a
12 | SDI
rd
Serial audio data input
13 | BCK
VO __| Digital audio bit clock input/output
14}
LRCK
/O__|
Audio data word select input/output
SDO
O
[Serial audio data output
=|
16 | ADSDI
I
A/D converter serial audio data input
17 | VSS
GND
ADSEL
I
Serial data audio source select input
FLAGI
I
Error flag input
20 | FLAGO
O
Error flag output
1
21 | WCK
O_|
Word clock output
22 | ASL
|
Audio data sampling length select input "H":24 bits "L":16 bits
23 | WIS
|
Audio data format select input
4
| _24|
MSBF
|
MSB select input
| 25 | LRCKPOL
I
LRCK pole select input "H':Lch "L":Rch
| 26]
MSTCK
/O __| Master clock input/output
I
Master clock frequency
select input
| 28| REFCK
|
|__| Reference clock input for sampling frequency
accurate check
| __ 29 | CKACO
O___|
Sampling frequency accurate check output
| 30
| MUTE
1
Mute control input
ii
| 31,32 | MODEO-1_ |
|
Mode select input
| 33.
|_IN/OU
I
Transmission reception select input
| 34,35 | CATO,1
0 __| Category
information input/output
| _36|
TXOE
!
TX output enable input
| _37| FSINSEL
| I
[fs information select input
VDD
Power supply
VSS
GND
40 | TYPE
VO __| Type information input/output
|
41,42 | FSO-FS1
/O___|
fs information input/output
43 | COPY
VO
| Copy information input/output
44 | EMP
0
| Emphasis information input/output
ac
M51581FP
TC74HCU04AF
a
1
ba
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