Denon AVC-2890, Руководство по обслуживанию

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25
AVR-2805/985/AVC-2890
TC94A27UG (AD: IC371, 376)
Function
Pin
No.
Pin Name I/O
* For latch-up countermeasure, perform each power supply ON/OFF in the same timing.
28 XOUT O X’tal osc. connecting output terminal
29 XIN I X’tal osc. connection, external clock input terminal (24.576MHz or 12.288MHz)
30 DVDD — Digital power
31 DGND — Digital GND
32 EMPHA/UO I/O Emphasis information/U-data output/Chip address setting terminal
33 AUDIO/VO I/O Non-PCM detect/V-flag output/ Chip address setting terminal
34 CKST I/O Clock switch transition period output/Demodulation master or slave function switching terminal
35 INT I/O Interrupt output for
µ
com (Interrupt factor selectable)/Modulation or general I/O switching terminal
36 RERR O PLL lock error, data error flag output
37 DO O
µ
com I/F, read out data output terminal (3-state)
38 DI I
µ
com I/F, write data input terminal
39 CE I
µ
com I/F, chip enable input terminal
40 CL I
µ
com I/F, clock input terminal
41 XMODE I System reset input terminal
42 DGND — Digital GND
43 DVDD — Digital power
44 TMCK/PIO0 I/O 256fs system clock input for modulation/General I/O in/output terminal
45 TBCK/PIO1 I/O 64fs bit clock input for modulation/General I/O in/output terminal
46 TLRCK/PIO2 I/O fs clock input for modulation/General I/O in/output terminal
47 TDATA/PIO3 I/O Serial audio data input for modulation/General I/O in/output terminal
48 TXO/PIOEN O/I Modulation data output/ General I/O enable input terminal
NC
L‑TVR‑REFB
L‑TVR‑1NB
L‑MVR‑1NB
L‑MVR‑OUTB
L‑TVR‑OUTB
L‑MVR‑AGNDB2
L‑MVR‑AGNDARE
L‑MVR‑AGNDARE
L‑MVR‑AGNDA2
NC
L‑MVR‑AGNDB1
NC 12
11 10 9 8 7 6 5 4 3 2 1
13
14
15
16
17
19
18
20
21
22
44
43
42
41
40
39
37
38
36
35
34
23 24 25
26 27
30 29
28
31 32 33
R‑TVR‑REFB
R‑TVR‑1NB
R‑MVR‑1NB
R‑MVR‑OUTB
R‑TVR‑OUTB
R‑MVR‑AGNDB2
R‑MVR‑AGNDA1
R‑MVR‑AGNDA2
R‑MVR‑OUTA
NC
R‑MVR‑AGNDB1
L‑MVR‑INA R‑MVR‑INA L‑TVR‑INA L‑TVR‑OUTA
L‑TVR‑REPA R‑TVR‑REF
R‑TVR‑INA
R‑TVR‑OUTA
NC
CS1 VDD
TEST
GND
MUTEM
CS2
CK
MUTE
VSS STB
DATA
Latch Latch
Level shift circuit
Test &
auto clear circuit
Timing
generating
circuit
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Latch
Decoder circuit
24 bit shift register
Decoder circuit
Latch
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