Kenwood KRF-V7771D Service Manual page 14

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6-2 Pin description
Pin No. Pin Name
1 DSP1_RESET
2 DSP3_SS
3 DSP3_HREQ
4 –
5 DSP3_RESET
6 N. C.
7 AVref1
8 DSP3_MI
9 DSP3_MO
10 DSP3_CK
11 MDT
12 SDT
13 MCK
14 MREQ
15 SREQ
16 DSP1_MI/DSP2_MI
17 DSP1_MO/DSP2_MO
18 DSP1_CK_DSP2_CK
19~21 NO_MUTE_TIME0~2
TE
L 13942296513
22~26 N. C.
27 PEAK_LEVEL
28 WIDE_0
29~32 WIDE_I0~I3
33 Vss
34 WIDE_I4
35~40 N. C.
41 DSP_SEL_DISABLE
42 N. C.
43 SEL_ANALOG
44~46 N. C.
47 SUB_MUTE
48 N. C.
49 2090/2080
50 DSP_SEL1
51 DSP_SEL2
52 CS_OVL/ERR
53 CS_PDN
54 CS_FREQ1
55 CS_FREQ0
56 CS_CDIN
57 CS_CS
www
58 CS_CCLK
59 CS_CDOUT
60 RESET
.
61 CS_AUDIO
62 CS_AC3
63 DSP2_DTS_DTCT
CIRCUIT DESCRIPTION
I/O Connect
O P. D.
O P. U.
I P. D.
– GND
O P. D.
I P. D.
– +5V
I P. D.
O P. D.
O P. D.
I P. D.
O P. D.
I P. D.
I P. D.
O P. D.
I P. D.
O P. D.
O P. D.
I P. U.
I P. U.
O P. D.
O P. D.
I P. D.
– GND
I P. D.
I P. D.
O P. D.
I P. D.
O P. D.
I P. D.
O P. D.
I P. D.
I P. D.
O P. D.
O P. D.
I P. D.
O P. D.
I P. D.
I P. D.
O P. D.
O P. D.
O P. D.
x ao u163
I P. D.
y
I –
i
I P. D.
I P. D.
I P. D.
KRF-V7771D/V8881D/VR-2080/2090
2 9
8
DSP IC1 (AC-3) RESET
DSP IC3 (THX) SLAVE SELECT
DSP IC3 (THX) HOST REQUEST
–
DSP IC3 (THX) RESET
–
–
DSP IC3 (THX) MASTER IN SLAVE OUT
DSP IC3 (THX) MASTER OUT SLAVE IN
DSP IC3 (THX) CLOCK
Microprocessor communication MASTER DATA
Microprocessor communication SLAVE DATA
Microprocessor communication MASTER CLOCK
Microprocessor communication MASTER REQUEST
Microprocessor communication SLAVE REQUEST
DSP IC1, 2 (AC-3, DTS) MASTER IN
DSP IC1, 2 (AC-3, DTS) MASTER OUT
DSP IC1, 2 (AC-3, DTS) CLOCK
PCM NONE INPUT UNMUTE HOLD TIME SETTING
pin 19 20 21 TIME(s)
L L L 0
L L H 1
L H L 2
Q Q
L H H 3
3 6 7 1 3 1 5
–
CLIP INDICATOR LED CONTROL
S-VIDEO WIDE/NORMAL CHANGEOVER CONTROL
(MONITOR OUT)
S-VIDEO WIDE/NORMAL DETECT0 (VIDEO4~1)
–
S-VIDEO WIDE/NORMAL DETECT4 (AV AUX)
–
DSP SELECTOR OUTPUT DISABLE (mute)
–
INPUT DIGITAL/ANALOG DISTINCTION
–
SUB MUTE CONTROL
–
2090/2080 MODEL DISTINCTION
DSP SELECTOR TC74HC CHANGEOVER H: DTS, L: DOLBY
DSP SELECTOR TC74HC CHANGEOVER H: DTS, L: DOLBY
CODEC OVER LEVEL/ERROR
CODEC POWER DOWN
CODEC FS CHECK1
CODEC FS CHECK0
CODEC DATA OUT
CODEC CHIP SELECT
CODEC CLOCK
co
CODEC DATA IN
RESET
.
CODEC AUDIO/NON-AUDIO DETECT H: DATA, L: PCM
CODEC AC-3 H: AC-3 DETECT
DSP IC2 (DTS) DTS DETECT H: DTS DETECT
9 4 2 8
Description
pin 19 20 21
H L L
H L H
H H L
H H H
0 5 8 2 9 9 4
analog: L, digital: H
m
9 9
TIME(s)
4
5
6
5
2 8 9 9
15