RXD-M55-H/M55-N/M55-S/M55E-H/M55E-N/M55E-S
10
CIRCUIT DESCRIPTION
Pin No.
Pin Name
I/O
Pin Description
1
BCLK
-
Unused.
2
LRCK
-
Unused.
3
SRDATA
-
Unused.
4
DVDD1
-
Digital power supply.
5
DVSS1
-
Digital ground.
6
TX
O
Digital Out output.
7
MCLK
I
CPC command clock signal input.
8
MDATA
I
CPU command data signal input.
9
MLD
I
CPU command load signal input. "L" : Load
10
SENSE
-
Unused.
11
FLOCK
-
Unused.
12
TLOCK
-
Unused.
13
BLKCK
O
Sub code block clock output.
14
SQCK
I
Sub code Q data clock input pin.
15
SUBQ
O
Sub code Q data signal output pin.
16
DMUTE
-
Connected to be ground.
17
STAT
O
Status signal output.
18
RST
I
Reset signal input.
19
SMCK
-
Clock signal output (unused).
20
PMCK
-
Clock signal output (unused).
21
TRV
O
Traverse stop signal output.
22
TVD
O
Traverse control pin.
23
PC
O
Spindle motor on signal output.
24
ECM
O
Control signal output for spindle motor.
25
ECS
O
Control signal output for spindle motor.
Pin No.
Pin Name
I/O
Pin Description
Active
H
L
56
SD
I
SD detector input.
Detected
57
TU MUTE
O
Tuner mute control.
Mute ON
58
PLAY SW
I
Detection switch input of head position for deck.
Playback
59
REC R SW
I
Deck reverse recording switch input.
OFF
ON
60
REC F SW
I
Deck forward recording switch input.
OFF
ON
61
HALF SW
I
Cassette half switch input.
Detected
62
BEAT C
O
ON/OFF control pin of beat cancel for deck.
ON
OFF
63
R/P
O
Deck recording & playback changeover.
Recording
Playback
64
BIAS
O
ON/OFF control pin of bias for deck.
ON
OFF
65
A/B-1
O
Deck recording mute & head select control 1.
66
A/B-2
O
Deck recording mute & head select control 2.
67
MUTE
O
Deck line mute control.
ON
68
CPM
O
Control pin of capstan motor for deck.
69
SOL
O
Control pin of solenoid for deck.
70
RDS DATA
I
RDS data input. (E/T version only)
71
PROTECT
I
Detection pin of the protection for power supply.
72
AMUTE
O
Audio mute output.
73
SP RLY
O
On/off control pin for speaker relay.
74
EEP SDA
I/O
EEPROM data input/output.
75
EEP SCL
O
EEPROM clock output.
76,77
ENC A,B
I
Volume encoder (X14, S516) signal inputs.
78
LED STBY RED
O
Standby led (red) control pin.
OFF
ON
79
LED STBY GRN
O
Standby led (green) control pin.
OFF
ON
80
NCS
O
Chip enable output of FL driver.
6. Description of ICs
6-1 DSP IC : MN6627482WB(X29, IC22)
