Denon AVR-1603/683 Service Manual page 16

Pin
Pin Name I/O
No.
28 XOUT
29 XIN
30 DVDD —
31 DGND —
32 EMPHA/UO I/O
33 AUDIO/VO I/O
34 CKST I/O
35 INT I/O
36 RERR
37 DO
38 DI
39 CE
40 CL
41 XMODE
42 DGND —
43 DVDD —
44 TMCK/PIO0 I/O
45 TBCK/PIO1 I/O
46 TLRCK/PIO2 I/O
47 TDATA/PIO3 I/O
48 TXO/PIOEN O/I
* For latch-up countermeasure, perform each power supply ON/OFF in the same timing.
LC72131 (IC401)
1 XOUT
XIN 20
CE 2
19 Vss
3
DI 18 AOUT
4
CL 17 AIN
DO 16 PD
5
BO1
VDD
6 15
BO2 FMIN
7 14
BO3 8 AMIN
13
BO4 IO2
9 12
IO1 10 IFIN
11
O X'tal osc. connecting output terminal
I X'tal osc. connection, external clock input terminal (24.576MHz or 12.288MHz)
Digital power
Digital GND
Emphasis information/U-data output/Chip address setting terminal
Non-PCM detect/V-flag output/ Chip address setting terminal
Clock switch transition period output/Demodulation master or slave function switching terminal
Interrupt output for µcom (Interrupt factor selectable)/Modulation or general I/O switching terminal
O PLL lock error, data error flag output
µcom I/F, read out data output terminal (3-state)
O
µcom I/F, write data input terminal
I
5
µcom I/F, chip enable input terminal
I
5
µcom I/F, clock input terminal
I
5
I System reset input terminal
5
Digital GND
Digital power
256fs system clock input for modulation/General I/O in/output terminal
64fs bit clock input for modulation/General I/O in/output terminal
fs clock input for modulation/General I/O in/output terminal
Serial audio data input for modulation/General I/O in/output terminal
Modulation data output/ General I/O enable input terminal
LA1266 (IC402)
1 24
12 13
LA3401 (IC403)
22
21
VOL
OSC
REG
SYMMETRICAL
REOCTANCE
CIRCUIT
FF
MUTING
FM AM CHANGE
1 2
Function
AM-IF
20 18 11 13 10
IF
IF
BUFFER BUFFER
AM-IN 21 RF MIX
REG OSC
22 23
20 19 18 17 16
PHASE
PILOT DET
COMPARATOR
VCO STOP
FF FF
FF
FF
38kHz 38kHz 90°
19kHz 90°
MUTING CONTROL
DECODER
FM AM CHANGE OVER
Ro
Rb
Rc Rb
Vcc ON
MUTING
Rc
3 4 6 8
5 7
AVR-1603/683
FM-IF FM-IN
1 2 3 5 6 7
Vcc
POST
FM - IF Q.D.
AMP
AM-IF DET
OSC NARROW LED
AGC S-METER
BUFFER S-METER DRIVER
GND
24 17 16
4 14 19
14
15 12
13
LAMP
DRIVER
TRIGGER
STEREO
SWITCH
MUTING
OUTPUT
9 10 11
12
9
15
8
16