47
XC-L5
Standby state
Power supply to DECK
Set TCPOW (pin 100)
to "H".
POWER ON
Set XPOWON (pin 34) to "L".
System bus
communication
transfer
Transmit the following information to other connected
items.
• DEMO OFF
• System power ON : Turn the power ON.
• Function information (CD)
• CD information CDSTOP
• D.REQ (pin 48) of microprocessor port outputs "H" and "L" in
every 3.0 msec. Each item transfer the display data in
accordance with the timing.
D.REQ = H
MD data reception
= L
DECK data reception
Data are transferred from D.DATA (pin 45) and D.CLK (pin47).
• Judge that there is no item (DECK or MD) when data is not
transferred for three seconds.
The movement after it is judged that there is no item as follows.
When function is changed with function switch, function name
of no item is not displaed. (Judge that there is no item when
disconnecting a connector, too.)
Inhibit KEY reception
for one second.
Bus data
transmission
CD TRAY OPEN ?
Check CD CLOSE
(pin 65)
No
pin 65 :"L"
Yes
pin 65 :"H"
Close the CD TRAY
Yes
To the function of function last-memory.
No
Is DECK connected ?
Cut off the power
supply to the DECK.
Set TCPOW (pin 100)
to "L".
FUNCTION TUNER
Transfer the last data
to TUNER PLL IC.
OTHER FUNCTION
Transfer the dummy data
to TUNER PLL IC.
FUNCTION CD
Transfer the dummy data
to TUNER PLL IC.
Initial setting of CD decoder IC.
TOC READING (at disc exist)
Turn the
power ON
• Sequence after the POWER ON
Process after 3.9 seconds after the POWER ON.
Transfer the data of FUNCTION, VOLUME, BASS
and TREBLE to the Volume IC.
Process after 4.0 seconds after the POWER ON.
Release the speaker relay (SPCCONT (pin 28) :"H")
Release MUTE (XMUTE (pin 30) :"OPEN")
∗
∗
The condition that MUTE is not released
• At the time of VOLUME 0
• At the time of one except for PLAY in the MD and
DECK functions.
The condition that SP CONT is not released.
• Headphone is inserted. (HPSW (pin 20),
H :There is Headphone, L : There is no Headphone)
