64
SEMICONDUCTORS
Only major semiconductors are shown, general semiconductors etc. are omitted to list.
The semiconductor which described a detailed drawing in a schematic diagram are omitted to list.
1. IC's
DEVICE INFORMATION
TERMINAL FUNCTIONS—PCM1781
TERMINAL
I/O
DESCRIPTION
NAME
NO.
AGND
12
–
Ground
BCK
7
I
Audio data bit clock input
(1)
DATA
6
I
Audio data digital input
(1)
DEMP0
2
I
De-emphasis control
(1)(2)
DEMP1
3
I
De-emphasis control
(1)(2)
FMT
1
I
Data format select
(1)(2)
LRCK
8
I
Audio data left and right clock input
(1)
MUTE
4
I
Soft mute control
(1)(2)
NC
10
–
No connection
SCK
5
I
System clock input
(1)
TEST
9
–
Test pin for factory use. Must be LOW or open
(1)(2)
V
CC
11
–
Power supply, 5-V
V
COM
13
–
Common voltage decoupling
V
OUT
L
15
O
Analog output for L-channel
V
OUT
R
14
O
Analog output for R-channel
ZEROA
16
O
Zero flag output for L- and R-channels
(1) Schmitt-trigger input
(2) Pulldown
ZEROA
V
OUT
L
V
OUT
R
V
COM
AGND
V
CC
NC
TEST
16
15
14
13
12
11
10
9
FMT
DEMP0
DEMP1
MUTE
SCK
DATA
BCK
LRCK
PCM1781
(TOP VIEW)
1
2
3
4
5
6
7
8
P0014-01
PIN ASSIGNMENTS
PCM1781 (U15)
