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Pin Description
36
Pin No.
Pin Name
Type
Description
149
XIN
I
Crystal In : System Clock (33.8688MHz)
148
XOUT
O
Crystal Out: System Clock
141
CLKOUT
O
Clock Output
8
C34M
O
Set to 34.5744MHz
CD ENCODER/DECODER Interface
Pin No.
Pin Name
Type
Description
168
PANICIN
I
S
Panic Input : Write abort Input
132
WBLIN
I
S
Wobble In : Wobble Input–Digital Signal
167
HFSW
O
High Frequency Modulation Switch
166
WGATE
O
Write Gate
180
WRSMP
O
Write Level Sample : Sample hold signal of write levels on reading
183
EFM1
O
EFM 1 : EFM output
184
EFM2
O
EFM 2 : EFM output
185
EFM3
O
EFM 3 : EFM output
169
EFMNT1/
EFMNT1 : EFM pit pattern length indicator/
EMFNRZ
O
EFMNRZ : EFM Signal Output
170
EFMNT2/
EFMNT2 : EFM pit pattern length indicator/
69M
O
69M : 69.1488MHz
171
EFMNT3
O
EFMNT3 : EFM pit pattern length indicator
172
EFMNT4
O
EFMNT4 : EFM pit pattern length indicator
175
E11TP
O
EFM11T Pit Pattern : EFM11T Pit pattern indicator
176
E11TS
O
EFM11T Space Pattern : EFM11T Pit pattern indicator
177
EFCK
O
EFM Bit Clock : EFM bit Clock generated from internal clock in CD encoder
181
RESMP1
O
Read Level Sample1 : Sample hold signal of read levels on writing
182
RESMP2
O
Read Level Sample2 : Sample hold signal of read levels on writing
186
ROPC1
O
Running OPC1 : Sample hold signal 1 of reflected beam for running OPC during write
187
ROPC2
O
Running OPC2 : Sample hold signal 2 of reflected beam for running OPC during write
188
ROPC3
O
Running OPC3 : Sample hold signal 3 of reflected beam for running OPC during write
133
MONIT0
O
Monitor 0 : Test pin controlled by Register 03Eh
179
EEFS
O
EFm Frame Sync
178
ESFS
O
Encoder Subcode Frame Sync
Clock
WOBBLE Motor Interface
Pin No.
Pin Name
Type
Description
6
REVDET
I
S
Reverse Detect Motor Drive : Indicates spindle motor is rotating in reverse direction
7
FG
I
FG IN : HG (tachometer) pulse input
12
MON
O
Motor Drive On : Enables spindle motor drive
13
SBRK
O
Short Brake : Stops spindle motor by applying a short pulse to the motor winding