Lc75721E (Ic301); Lc75721E Terminal Function; Bu2090F (Ic302,1005,1008); Mm74Lcx244 (Ic809-811) - Denon AVR-1707 Service Manual

Pin
Pin Name
No.
28 XOUT
29 XIN
30 DVDD
31 DGND
32 EMPHA/UO
33 AUDIO/VO
34 CKST
35 INT
36 RERR
37 DO
38 DI
39 CE
40 CL
41 XMODE
42 DGND
43 DVDD
44 TMCK/PIO0
45 TBCK/PIO1
46 TLRCK/PIO2
47 TDATA/PIO3
48 TXO/PIOEN
* For latch-up countermeasure, perform each power supply ON/OFF in the same timing.

LC75721E (IC301)

48
49
DI
CL
CE
RES
V
DD
OSCI
OSCO
Vss
TEST
V
FL
G1
G2
G3
G4
G5
G6
64
1

MM74LCX244 (IC809-811)

TOP VIEW
1 20
OE VCC
2 19
I0 OE2
3 18
O0
O4
17
4
I1 I4
5 16
O5 O1
6 15
I2 I5
7 14
O6 O2
8 13
I3 I6
9 12
O7 O3
10 11
GND I7
I/O
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
I/O Emphasis information/U-data output/Chip address setting terminal
I/O Non-PCM detect/V-flag output/ Chip address setting terminal
I/O Clock switch transition period output/Demodulation master or slave function switching terminal
I/O Interrupt output for com (Interrupt factor selectable)/Modulation or general I/O switching terminal
O PLL lock error, data error flag output
O com I/F, read out data output terminal (3-state)
I com I/F, write data input terminal
I com I/F, chip enable input terminal
I com I/F, clock input terminal
I System reset input terminal
— Digital GND
— Digital power
I/O 256fs system clock input for modulation/General I/O in/output terminal
I/O 64fs bit clock input for modulation/General I/O in/output terminal
I/O fs clock input for modulation/General I/O in/output terminal
I/O Serial audio data input for modulation/General I/O in/output terminal
O/I Modulation data output/ General I/O enable input terminal

LC75721E Terminal Function

Symbol
33
V Power terminal +5V
DD
Vss Power terminal GND
32
AM 17
V Power terminal FL drive
FL
AM 18
AM 19 Serial data transfer terminal
DI
AM 20
DI: Data
AM 21
CL
AM 22 CL: Clock
AM 23 CE
CE: Chip enable
AM 24
AM 25
OSCI
AM 26
External CR connecting terminal
AM 27
OSCO
AM 28
AM 29
System reset terminal
RES
AM 30
AM 31
AM1~AM35
AM 32
Anode output terminal
17 AA1~AA3
AA4/G16
16
AA5/G15
AA6/G14
Anode/Grid output terminal
AA7/G13
AA8/G12
G1~G11 Grid output terminal
TEST LSI test terminal
Function

BU2090F (IC302,1005,1008)

Function
19
AVR-1707/1507/687/587/487
VSS 1
CONTROL CIRCUIT
DATA 2
12-bit SHIFT REGISTER
3
CLOCK
LCK
4
12-bit STRAGE REGISTER
Q0
5
O U T P U T B U FFE R (O P E N D R A IN )
Q1 6
Q2 7
Q3 8
9
Q4
18
VDD
17 OE
16 Q11
Q10
15
Q9
14
13 Q8
12
Q7
Q6
11
Q5
10