Pioneer MD-P100 Service Manual page 31

- Pin Functions(CXA1981AR)
Pin No. Pin Name
1 VC
2-7 A-F
8 FI
9 FO
10 PD
11 APCREF
12 TEMPI
13 GND
14 AAPC
15 DAPC
16 TEMPR
xrst
17
18 SWDT
19 SCLK
20 XLAT
21 VREF
22 TENV
23 THLD
24 VCC
25 TFIL
26 TE
27 TLB
28 CSLED
29 SE
30 ADFM
31 ADIN
32 ADAGC
33 ADFG
34 AUX
35 FE
36 FLB
37 ABCD
38 BOTM
39 PEAK
40 PFAGC
41 RF
42 ISET
43 AGCI
44 RFO
45 MORFI
46 MORFO
47,48 I,J
CXA1981AR
24
25
36
37
I/O Function and Operation
O Output terminal for the center point voltage (1/2 VCC) generated
I Signal input from detector circuit in the optical pick-up block
I Signal input of the operational amplifier for F signal
O Signal output of the operational amplifier for F signal
I Front monitor Connected to the photo diode
I Input terminal for the setting of laser power
I Terminal for the connection to temperature sensor Not used this set (OPEN)
Ground terminal
O LD amplifier output terminal of APC circuit
O Not used (OPEN)
O Output terminal of the reference voltage for temperature sensor
Not used this set (OPEN)
I Reset signal input from the system controller (IC600) When reset : "L"
I Write data signal input from the system controller (IC600)
I Clock signal input from the system controller (IC600)
I Latch signal input from the system controller (IC600)
O Reference voltage output Not used this set (OPEN)
O Not used (OPEN)
I Not used (OPEN)
Power supply terminal (+3.3V)
I Not used (OPEN)
O Tracking error signal output to CXD2535CR (IC200)
I Input terminal of the adder signal to tracking error Not used this set (OPEN)
I Terminal for the sled error lowpass filter
O Sled error signal output to CXD2535CR (IC200)
O FM signal output terminal of the ADIP
I Input terminal by AC coupling is FM signal of the ADIP
I External capacitor connect terminal for AGC of the ADIP
ADIP double turned FM signal output to CXD2535CR (IC200) (22.05kHz ±1kHz)
O
O Sub signal output to CXD2535CR (IC200)
O Focus error signal output to CXD2535CR (IC200)
I Input terminal of the adder signal to focus error Not used this set (OPEN)
O Light amount signal output to CXD2535CR (IC200)
O Light amount bottom hold signal output to CXD2535CR (IC200)
O Light amount peak hold signal output to CXD2535CR (IC200)
I External capacitor connect terminal of AGC circuit for the RF
O Playback EFM RF signal output to CXD2535CR (IC200)
I Setting terminal for the internal circuit constant 22kHz,BPF center frequency
I Input terminal by AC coupling is RF signal
O RF signal output terminal
I Input terminal by AC coupling is RF signal of the MO
O RF signal output terminal of the MO
I Signal input from detector circuit in the optical pick-up block
13
12
1
48
MD-P100
31