14 MMOD I Microprocessor mode set to “L” 
15 VREF- - Analog reference ground
16 KEY1 A/D Key input 1
17 KEY2 A/D Key input 2
18 REG_1 I Region setting 1
19 REG_2 I Region setting 2
20 REG_3 I Region setting 3
21 REG_4 I Region setting 4
22 PDET A/D Power supply voltage detect
23 ADL_IN A/D Deck mechanism condition input
24 VREF+  O +5 reference for A/D
25 NC O No connection
26 SUBQ I CD subcode data input
27 SQCK O CD subcode data clock
28 MBP1 O Micro-P beat proof control output 1
29 MBP2 O Micro-P beat proof control output 2
30 T_MUTE O Tuner mute
31 PLL DO I PLL if count input
32 /RESET I System reset input
33 PLL DA O PLL data output
34 PLL CLK O PLL clock output
35 PLL CE O PLL chip enable output
36 BP O Beat proof for AM
37 /DMT O Tape mute output
38 BLKCK I CD subcode block clock input
39 RMT_IN I Remote control input
40 /VCCDET I Laser on signal input (“H”: ON)
41 CDOP_SW I CD open switch
42 PHOTO_I I Tracking Offset alignment output/DSL Balance Output (DA Output)
43 MOTOR_L O N.C.
44 REC_H O RF signal input
45 PL O Reference current input
46 SP_CLK O DSL bias terminal (Not used, open)
47 SP_DAT O DSL loop filter terminal