Sony CDP-XA555ES - IC Pin Function Descriptions - Servo Board Final; IC101 Pin Details (Pins 75-100)

44
Pin No. Pin Name I/O Description
75 SBSO O Sub-code P-W serial data output terminal Not used (open)
76 EXCK I Sub-code P-W serial data reading clock signal input terminal Not used (fixed at “L”)
77 SUBQ O Sub-code Q data signal output to the system controller (IC201)
78 SQCK I Sub-code Q data reading clock signal input from the system controller (IC201)
79 MUTE I Mute signal input from the system controller (IC201)
80 SENS O Internal status (SENSE) signal output to the system controller (IC201)
81 XRST I
System reset signal input from the reset signal generator (IC204) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
82 DIRC I 1-track jump mode input terminal Not used (fixed at “H”)
83 SCLK I Sense serial data reading clock signal input from the system controller (IC201)
84 DFSW I Defect on/off select signal input terminal Not used (fixed at “L”)
85 ATSK I Input terminal for the anti-shock Not used (fixed at “L”)
86 DATA I Serial data input from the system controller (IC201)
87 XLAT I Serial data latch pulse signal input from the system controller (IC201)
88 CLOK I Serial data transfer clock signal input from the system controller (IC201)
89 COUT O Track number count signal output terminal Not used (open)
90 DVDD — Power supply terminal (+5V) (digital system)
91 MIRR O Mirror detection signal output terminal Not used (open)
92 DFCT O Defect signal output terminal Not used (open)
93 FOK O Focus OK signal output terminal Not used (open)
94 FSW O Selection signal output terminal of the output filter for spindle motor Not used (open)
95
MON O Spindle motor on/off control signal output terminal Not used (open)
96
MDP O Spindle servo control signal output terminal
97
MDS O Spindle servo control signal output terminal Not used (open)
98
LOCK O
GFS is sampled by 460 Hz “H” output when GFS is “H” Not used (open)
99 SSTP I
Detection input from the sled limit-in detect switch (S22)
The optical pick-up is inner position when “H”
100 SFDR O Sled servo drive PWM signal (+) output to the BA6297AFP (IC102)