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參數資料
| 型號： | LC78625E |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁數： | 34/35頁 |
| 文件大小： | 535K |
| 代理商： | LC78625E |
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Pin Functions
No. 5502-8/35
LC78625E
Pin No.
Symbol
I/O
Function
1
DEFI
I
Defect detection signal (DEF) input (This pin must be connected to 0 V if unused.)
2
TAI
I
Test input. A pull-down resistor is built in. (This pin must be connected to 0 V in normal operation.)
3
PDO
O
External VCO control phase comparator output
4VVSS
PLL pins
Internal VCO ground. (This pin must be connected to 0 V.)
5
ISET
AI
PDO output current adjustment resistor connection
6VVDD
Internal VCO power supply.
7FRAI
VCO frequency range adjustment
8VSS
Digital system ground. (This pin must be connected to 0 V.)
9
EFMO
O
EFM signal inverted output
10
EFMO
O
Slice level control
EFM signal output
11
EFMIN
I
EFM signal input
12
TEST2
I
Test input. A pull-down resistor is built in. This pin must be connected to 0 V in normal operation.
13
CLV+
O
Spindle servo control output. Acceleration when CLV+ is high, deceleration when CLV- is high.
14
CLV–
O
Three-value output is also possible when specified by microprocessor command.
15
V/P
O
Rough servo/phase control automatic switching monitor output. Outputs a high level during rough servo and a low level during
phase control.
16
FOCS
O
Focus servo on/off output. Focus servo is on when the output is low.
17
FST
O
Focus start pulse output. This is an open-drain output.
18
FZD
I
Focus error zero cross signal input. (This pin must be connected to 0 V if unused.)
19
HFL
I
Track detection signal input. This is a Schmitt input.
20
TES
I
Tracking error signal input. This is a Schmitt input.
21
PCK
O
EFM data playback clock monitor. Outputs 4.3218 MHz when the phase is locked.
22
FSEQ
O
Synchronization signal detection output. Outputs a high level when the synchronization signal detected from the EFM signal and
the internally generated synchronization signal agree.
23
TOFF
O
Tracking off output
24
TGL
O
Tracking gain switching output. Increase the gain when low.
25
THLD
O
Tracking hold output
26
TEST3
I
Test input. A pull-down resistor is built in. (This pin must be connected to 0 V.)
27
VDD
Digital system power supply.
28
JP+
O
Track jump output. A high level output from JP+ indicates acceleration during an outward jump or deceleration during an inward
jump.
29
JP–
O
A high level output from JP- indicates acceleration during an inward jump or deceleration during an outward jump.
Three-value output is also possible when specified by microprocessor command.
30
DEMO
I
Sound output function input used for end product adjustment manufacturing steps. A pull-down resistor is built in. (This pin must
be connected to 0 V.)
31
TEST4
I
Test input. A pull-down resistor is built in. (This pin must be connected to 0 V.)
32
EMPH
O
De-emphasis monitor pin. A high level indicates playback of a de-emphasis disk.
33
LRCKO
O
Word clock output
34
DFORO
O
Digital filter outputs
Right channel data output
35
DFOLO
O
Left channel data output
36
DACKO
O
Bit clock output
37
TST10
O
Test output. Leave open. (Normally outputs a low level.)
Continued on next page.
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