Kenwood DPX701 Service Manual page 15

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name I/O
48 ZERO M I
49 DE-EMPHASIS O
50,51 NC -
52 LIM SW I
53 DISC NORMAL O
54 DISC H RW O
55 DISC RW O
56~59 TEST OUT4~1 O
60 VCC2 -
61 TEST OUT0 O
62 VSS -
63~66 NC -
67 TEST IN3 I
68 MODEL SEL I
69 E2P WRITE I
70 UNIQ ID I
71~73 NC -
74 SEARCH O
75,76 NC -
77 DSP RST O
78 DSP A0 O
79 DA EMPHASIS I
80 ROM EMPHASIS I
81 DATA MUTE O
82 CS RST O
83 NC -
84 SREQ O
85 BREQ I
86~93 NC -
94 AVSS -
95 NC -
96 VREF -
97 AVCC -
98~100 NC -
Application
0-bit mute detection
DAC de-emphasis control
Not used
Laser pick-up inner circumference detection
SW signal input
Media discrimination result output (Not used)
Media discrimination result output (Not used)
Media discrimination result output (Not used)
Output for test
Power supply input
Output for test
Power supply input
Not used
TEST IN3
Model determination
TEST IN1: E2P writing permission
TEST IN0: Uniqe ID writing permission
Not used
Searching situation output
Not used
DSP reset control
DSP command/parameter discrimination
signal output
DSP DA emphasis input
Decoder ROM emphasis input
Data output status
Decoder reset control
Not used
Decoder SREQ signal output
Decoder BREQ signal input
Not used
Analog power supply input
Not used
Reference voltage input
Analog power supply input
Not used
DPX701/701U/701UY
DPX-MP7090U
Processing Operation Description
H: Mute ON, L: Mute OFF
(No distinction of Lch/Rch)
H: De-emphasis ON, L: De-emphasis OFF
Opened output L fixed
H: Inner circumference
H: Normal disc, L: Other disc
H: High reflecting RW disc, L: Other disc
H: Normal RW disc, L: Other disc
Opened output L fixed
Connects to BU3.3V
Opened output L fixed
Connects to GND
Opened output L fixed
Pull-down connection (L: Normal/H: During test)
L: DXM-6810W (X32-583), H: DXM-6820W (X32-587)
Pull-down connection (L: Normal/H: During writing)
Pull-down connection (L: Normal/H: During writing)
Opened output L fixed
H: During seaching, L: Normal
Opened output L fixed
L: Reset, H: Normal
H: During parameter transmitting
L: During command transmitting
H: emphasis ON, L: emphasis OFF
H: emphasis ON, L: emphasis OFF
L: During data output muting, H: During data output
L: Reset, H: Nornal
Opened output L fixed
Opened output L fixed
Connects to GND
Opened output L fixed
Not used: Connects to GND
Connects to BU3.3V
Opened output L fixed
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