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LC78681E Arkusz danych(PDF) 6 Page - Sanyo Semicon Device

Numer części LC78681E
Szczegółowy opis  Digital Signal Processor for Compact Disc Players
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Producent  SANYO [Sanyo Semicon Device]
Strona internetowa  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

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Figure 3 Subcode Output
Pin Description
No. 4521-6/23
LC78681E
No.
Name
I/O
Description
1
TEST1
I
LSI test input. Normally unconnected.
2AO
O
3AI
I
4
PDO
O
5VSS
GND
6
EFMO
O
7
EFMO
O
8
EFMIN
I
9
TEST2
I
LSI test input. Normally unconnected.
10
CLV+
O
Disc motor control outputs.
11
CLV
O
12
V/P
O
Output is high with constant linear velocity rough servo, and low during phase control
13
FOCS
O
14
FST
O
15
FZD
I
16
HFL
I
17
TES
I
18
PCK
O
4.3218 MHz PCK monitor output.
19
FSEQ
O
High when SYNC (true frame sync) detected from the EFM signal matches SYNC from counter (interleaving frame
sync). (Single-frame latch output.)
20
TOFF
O
21
TGL
O
22
THLD
O
23
TEST3
I
LSI test input. Normally unconnected.
24
VDD
+5 V
25
JP+
O
26
JP
O
27
DEMO
I
Sound generation function for set adjustment.
28
TEST4
I
LSI test input. Normally unconnected.
29
EMPH
O
Deemphasis required when high.
30
NC
Not connected.
31
WCLK
O
Signal output to D/A converter. Outputs latch signal and signals for left-right switching and sample holding.
32
TEST7
O
LSI test input. Normally unconnected.
33
LRCLK
O
Signal output to D/A converter. Outputs latch signal and signals for left-right switching and sample holding.
34
NC
Not connected.
35
DFOUT
O
Signal output to D/A converter. Outputs latch signal and signals for left-right switching and sample holding.
36
DACLK
O
37
TEST6
O
LSI test input. Normally unconnected.
Continued on next page.
LPin for input of the on-chip VCO output from the LA9210 (8.6436 MHz). Phase detector output (PDO) is phased
output with the EFM signal, set so that frequency is raised by positive voltage.
Inputs 1 to 2 VPP HF signal to EFMIN. Complementary EFM signal output is made from EFMO and EFMO via the
amplitude limiter. These are used for slice level control.
Focus servo is switched off when FOCS is high. Lens is lowered by FST and raised gradually when FOCS is high.
Generation of FZD resets FOCS. Used for focus servo control.
Generates kick pulse, JP+, or JPaccording to track jump command. Jumps the specified number of tracks (1, 2, 4,
16, 32, 64, or 128).
Generates kick pulse, JP+, or JPaccording to track jump command. Jumps the specified number of tracks (1, 2, 4,
16, 32, 64, or 128).
Generates kick pulse, JP+, or JPaccording to track jump command. Jumps the specified number of tracks (1, 2, 4,
16, 32, 64, or 128).


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