LC78621E Datasheet, PDF (7/34 Pages) Sanyo Semicon Device – Compact Disc Player DSP

LC78621E
Pin Functions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Symbol
DEFI
TAI
PDO
VV_SS
ISET
VV_DD
FR
V_SS
EFMO
EFMO
EFMIN
TEST2
CLV⁺
CLV^–
V/P
FOCS
FST
FZD
HFL
TES
PCK
FSEQ
TOFF
TGL
THLD
TEST3
V_DD
JP⁺
29
JP^–
30
DEMO
31
TEST4
32
EMPH
33
LRCKO
34
DFORO
35
DFOLO
36
DACKO
37
TST10
38
ASDACK
39
ASDFIN
40
ASDFIR
41
ASLRCK
I/O
Function
I Defect detection signal (DEF) input (Must be tied low if unused.)
I
Test input. A pull-down resistor is built in.
O
External VCO control phase comparator output
PLL pins
AI
Internal VCO ground. Normally 0 V.
PDO output current adjustment resistor connection
Internal VCO power supply.
AI
VCO frequency range adjustment
Digital system ground. Normally 0 V.
O
EFM signal inverted output
O Slice level control
EFM signal output
I
EFM signal input
I Test input. A pull-down resistor is built in.
O Spindle servo control output. Acceleration when CLV⁺ is high, deceleration when CLV^– is high
O Three-value output is also possible when specified by microprocessor command.
Rough servo/phase control automatic switching monitor output. Outputs a high level during rough servo and a low level
O _{during phase control.}
O Focus servo on/off output. Focus servo is on when the output is low.
O Focus start pulse output. This is an open-drain output.
I Focus error zero cross signal input. (Must be tied low if unused.)
I Track detection signal input. This is a Schmitt input.
I Tracking error signal input. This is a Schmitt input.
O EFM data playback clock monitor. Outputs 4.3218 MHz when the phase is locked.
Synchronization signal detection output. Outputs a high level when the synchronization signal detected from the EFM
O _{signal and the internally generated synchronization signal agree.}
O Tracking off output
O Tracking gain switching output. Increase the gain when low.
O Tracking hold output
I Test input. A pull-down resistor is built in.
Digital system power supply.
O ^{Track jump output. A high level output from JP+ indicates acceleration during an outward jump or deceleration during an}
inward jump.
A high level output from JP^– indicates acceleration during an inward jump or deceleration during an outward jump.
O _{Three-value output is also possible when specified by microprocessor command.}
I Sound output function input used for end product adjustment manufacturing steps. A pull-down resistor is built in.
I Test input. A pull-down resistor is built in.
O De-emphasis monitor pin. A high level indicates playback of a de-emphasis disk.
O
Word clock output
O
Digital filter outputs
O
Right channel data output
Left channel data output
O
Bit clock output
O Test output. Leave open. (Normally outputs a low level.)
I
Bit clock input
I _{Anti-shock system inputs} Left/right channel data input
I ^{(Must be tied low if unused.)} Test input. (Should be tied low for normal operation.)
I
Word clock input
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