Pioneer AVIC-505 Service Manual page 84

AVIC-505
Pin No. Pin Name
50,51 C1D1, C1D2
52-54 C2D1-C2D3
55 D.VDD
56 SFSY
57 SBSY
58 SBSO
59 SBCK
60 A.GND
61 MD
62 SD
63 TD
64 FD
65 FBAL
66 TBAL
67 A.VDD
68 TBC
69 EFM
70 HOLD
71 RFOK
72 MIRR
73 A.GND
74 HOME
75 VR1
76 FE
77 TE
78 TEC
79 REFOUT
80 A.VDD
*UPD63702AGF
65
80
84
I/O Function and Operation
O Output pin for indicating the C1 error correction results
O Output pin for indicating the C2 error correction results
Supplies current of positive voltage to the logic circuit
O Outputs 1 word of the subcode. Generally, 1 cycle is approx 136 micro seconds
O The signal indicates the beginning of the subcode block. The SFSY signal is
output at high level every 98 times
O Output pin for the subcode data
I Input pin for the clock signal for read-out of the subcode data
GND for the analog circuit
O Output pin for the spindle drive
O Output pin for the sled drive
O Output pin for the tracking drive
O Output pin for the focus drive
O Output pin for the focus balance control
O Output pin for the tracking balance control
Supplies current of positive voltage to the analog circuit
I Switches coefficient banks for the tracking filter
I Input pin for the EFM signal
I Input pin for the hold control signal
I Input pin for the RFOK signal
I Input pin for the MIRR signal
GND for the analog circuit
I Home position detector input
I The signal input through these pins is digitized to 8-bit by the A/D converter,
which by operation of the assigned register, can be read into the microcomputer
I Inputs a focus-error signal from the RF amplifier
I Inputs a tracking-error signal from the RF amplifier
I Input pin for the tracking comparator
O Output point for midpoint potential for the A/D converter for the LSI portion
Supplies current of accurate voltage to the analog circuit
40
25