27 TBAL I Tracking balance control
28 FBAL I Focus balance control
● IC702 (MN662790RSC) Servo Processor/Digital Processor/Digital Filter/D/A Converter
Pin
No.
Mark I/
O
Function
1 BCLK O N.C.
2 LRCK O N.C.
3 SRDATA O N.C.
4 DVDD1 I Power supply input (for digital circuit)
5 DVSS1 I GND (for digital circuit)
6 TX O Digital audio interface signal output (Latches data at first transition)
7 MCLK I Microprocessor command clock signal input
8 MDATA I Microprocessor command data signal input
9 MLD I Microprocessor command load signal input
10 SENSE O Sense signal output (OFT,FESL,MAGEND,NAJEND,POSAD,SFG) (Not used, open)
11 /FLOCK O Focus servo feeding signal output (“L”: Feed)
12 /TLOCK O Tracking servo feeding signal output (“L”: Feed)
13 BLKCK O Sub-code block clock signal output (BLKCKf = 75Hz during normal playback)
14 SQCK I External clock signal input for sub-code Q resistor
15 SUBQ O Sub-code Qcode output
16 DMUTE I Muting input (“H”: mute)
17 STAT O Status signal output (CRC,CUE,CLVS,TTSTVP,FCLV,SQC)
18 /RST I Reset signal input
19 SMCK O 1/2-divided clock signal of crystal oscillating at MSEL = “H” (fSMCK = 8.4672 MHz) 1/4-
divided clock signal of crystal oscillating at MSEL = “L” (fSMCK = 4.2336MHz)
20 CSEL I Frequency Selection Terminal H = 33.8688 MHz; L = 16.9344 MHz
21 TRV O N.C.
22 TVD O Traverse drive output
23 PC O Spindle motor ON output (“L”: ON)
24 ECM O Spindle motor drive signal output (forced mode output)
25 ECS O Spindle motor drive signal output (servo error signal output)
26 KICK O N.C.
27 TRD O Traverse drive output
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