– 30 –
Pin No.
Pin Name
I/O
Function
36
AMP-MUT
O
Muting on/off control signal output to the power amplifier (IC751) “L”: muting on
37
AMP ON
O
Standby on/off control signal output to the power amplifier (IC751)
“L”: standby mode, “H”: amp on
38
PLL-CKO
O
PLL serial data transfer clock signal output to the FM/AM PLL (IC21)
39
PLL-CE
O
PLL chip enable signal output to the FM/AM PLL (IC21) “H” active
40
PLL-SO
O
PLL serial data output to the FM/AM PLL (IC21)
41
PLL-SI
I
PLL serial data input from the FM/AM PLL (IC21)
42
LCD-SO
O
Serial data output to the liquid crystal display driver (IC901)
43
LCD-CE
O
Chip enable signal output to the liquid crystal display driver (IC901) “H” active
44
LCD-CKO
O
Serial data transfer clock signal output to the liquid crystal display driver (IC901)
45
VOL-SIO
I/O
Two-way data bus with the electrical volume (IC331)
46
NCO
O
Not used (open)
47
VOL-CKO
O
Bus clock signal output to the electrical volume (IC331)
48
ACC-IN
I
Accessory detect signal input terminal “L”: accessory on
49
MUT
O
Audio line muting on/off control signal output terminal “H”: muting on
50
NCO
O
Not used (open)
51
AMSON
O
Tape auto music sensor control signal output to the CXA2509AQ (IC301)
“L” is output to lower the gain for audio level at FF/REW mode
52
N/R-OUT
O
Forward/reverse direction control signal output to the CXA2509AQ (IC301)
“L”: forward direction, “H”: reverse direction
53
MTLON
I/O
METAL control in/out terminal
At initial mode: valid/invalid selection input of METAL function (valid at “L” input)
At normal mode: METAL on/off control signal output terminal (METAL on at “H” output)
Not used this function (fixed at “H”)
54
TAPE-MUT
O
Tape muting on/off control signal output to the CXA2509AQ (IC301) “H”: muting on
Active at ATA, FF/REW mode
55
DOLON
I/O
Dolby control in/out terminal
At initial mode: valid/invalid selection input of dolby function (valid at “L” input)
At normal mode: dolby on/off control signal output terminal (dolby on at “H” output)
Not used this function (fixed at “H”)
56
AMSIN
I
Whether a music is present or not from CXA2509AQ (IC301) is detected at auto music sensor
“L”: music is present, “H”: music is not present
57 to 75
NCO
O
Not used (open)
A/D converter power control signal output terminal
When the KEYACK (pin
@§
) that controls reference voltage power for key A/D conversion input
is active, “L” is output from this terminal to enable the input
81
POWSEL
I
Power select switch (S501) input terminal “L”: off (halt mode), “H”: on (operation mode)
82
ILL-ON
O
83
REEL
I
Rotation detect signal input from supply reel sensor and take-up reel sensor on the deck
mechanism
Power on/off control signal output of the illumination LED and liquid crystal display driver
(IC901) “H”: power on Depends on initial setting of power select switch (S501)
Power select switch (S501) on: “H” output at the accessory on
Power select switch (S501) off: “H” output at the power on
Dial pulse input of the rotary encoder (RE900)
(for VOLUME/BASS/TREBLE/BALANCE/FADER control)
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
