94
MEX-1HD
Pin No.
Pin Name
I/O
Description
48
RC_IN0
I
Key input from the rotary commander (A/D input) Not used
49
FP_I_DET
I
Over load detection signal input from the front panel open/close motor driver
50
QUALITY
I
Noise level detection signal input terminal Not used
51
TR_I_DET
I
Over load detection signal input from the tray open/close motor driver
52
MPTH
I
Multi-path detection signal input terminal Not used
53
VSM
I
FM and AM signal meter voltage detection input from the FM/AM tuner pack (A/D input)
54
VCC
—
Power supply terminal (+5V)
55
AMP_ON
O
Power amplifier drive signal output terminal “L”: standby, “H”: amplifier on
56
NS MASK
O
Noise detect port mask output terminal “H” active Not used
57
DOOR_IND
O
LED drive signal output terminal
58
XTROPEN_END
I
Detection input from the tray open-end detect switch “L”: active
59
XTRCLOSE_END
I
Detection input from the tray close-end detect switch “L”: active
60
TRAY_LED
O
LED drive signal output terminal
61
O
Motor drive signal output to the tray open/close motor driver “L”: tray open
62
TRAY_M–
O
Motor drive signal output to the tray open/close motor driver “L”: tray close
63
VSS
—
Ground terminal
64
NC
—
Not used
65
FSW_IN
I
Oscillation frequency count terminal
66
NC
—
Not used
67
SH_WDT
I
Watch dog timer detection signal input terminal
68
XFAIL
I
Rewriting failure detection terminal “L”: rewriting failure
69
XFLASH _W
I
FLASH writing mode detection terminal “L”: flash writing mode
70
I2CSIO
I/O
Two-way data bus with the FM/AM tuner pack and electrical volume
71
I2CCKO
O
Serial data transfer clock signal output to the FM/AM tuner pack and electrical volume
72
KEYACK
I
Input of acknowledge signal for the key entry Acknowledge signal is input to source and eject
keys in the power off status On at input of “H”
73
X1A
O
Sub system clock output terminal (32.768kHz) Not used
74
X0A
I
Sub system clock input terminal (32.768kHz)
75
XDAVN
I
Data transmit completed detect signal input terminal Not used
76
XRTC_INT
I
Alarm interrupt request signal input from the real time clock
77
BU IN
I
Back up power supply detect signal input terminal “L” is input at low voltage
78
XPDOWN
I
Power down detection signal input from the voltage detect “L”: power down, normally: “H”
79
RC_IN1
I
Key input from the rotary commander (A/D input) Not used
80
XADON
O
A/D converter power control signal output When the KEYACK (pin
us
) that controls reference
voltage power for key A/D conversion input is active, “L” is output from this terminal to enable
the input
81
XACC_IN
I
Accessory power supply detect signal input terminal “L”: accessory on
82
FLS_ON
O
Level shift on/off control of UART communication and watch dog timer signal line
83
PW_ON
O
Audio system power supply on/off control signal output to the regulator “H”: power on
84
XTEST_IN
I
For test terminal Normally fixed at “H”
85
RAMBU
I
Internal RAM reset detection signal input from the reset signal generator
Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset
86
HSTX
I
Hardware standby signal input terminal “L”: hardware standby
87 to 89
MD2 to 0
I
Mode setting input terminal
90
XRST
I
System reset signal input from the reset signal generator “L”: reset
91
VSS
—
Ground terminal
Summary of Contents for MEX-1HD - Audio Library System
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