Samsung RCD-750 - Page 26

Pin No. Symbol | I/O Description
42 DB5 /O SRAM data I/OPort 5
43 DB 4 1/0 SRAM data I/OPort 4
44 DB 3 /O SRAM data I/OPort 3
45 DB 2 /O SRAM data |/OPort 2
46 DB 1 VO SRAM data |/OPort 1
47 C1F1 /O Monitoring output for C1 error correction (RA 1)
48 C1F2 1/0 Monitoring output for C1 error correction (RA 2)
49 C2F1 1/0 Monitoring output for C2 error correction (RA 3)
50 C2F2 1/0 Monitoring output for C2 error correction (RA 4)
51 C2FL VO C2 decoder flag
(High : When the processing C2 code is impossible correction state) (RA5)
52 /PBCK /O Output of VCO/2
(Normal speed = 4.3218MHz, Double speed = 8.6436MHZ) (RA
53 DVss2 Digital Ground 2
54 FSDW 1/0 Unprotected frame sync (RA7)
55 ULKFS 1/0 Frame sync protection state (RA8)
56 /JIT VO Display of either RAM overflow or underflow for + 4 frame jitter margin
57 C4M 1/0 Only monitoring signal (Normal playback : 4.2336MHz) (RA10)
58 C16M /O 16.9344MHz signal output (RA11)
59 /WE /O Terminal for test
60 Ics /O Terminal for test
61 SEL 1 | Mode Selection Terminal 1 (H : 33.8688MHz, L : 16.9344MHz)
62 SEL 2 | Mode Selection Terminal 2 (H : APLL : DPLL)
63 SEL 3 | Mode Selection Terminal 3 (H : CDROM L : CDP)
64 SEL 4 | Mode Selection Terminal 4 (L : Internal SRAM)
65 TEST | Test Terminal (L = Normal operating state)
66 EFMI | EFM Signal input
67 APDO O Charge Pump output for analog PLL
68 ASTAT oO The internal status output
69 TRCNT | Tracking counter input signal
70
LOCK
O
Output
signal
of
LKFS
Condition
sampled
PBFR/16
(If LKFS is "H", Lock is "H".
(If the LKFS is sampled "L" at least 8 times by PBFR/16, Lock is "L")
71 PBFR O Write frame clock (Lock : 7.35KHz)
72
SMEF
O
LPF
time
constant
control
of
the
spindle
servo
error
signal
73 SMON O ON/OFF control signal for spindle servo
74 DVpb2 Digital Vcc 2
75 SMPD O Spindle Motor drive
Phase control in the CLP modes
76
SMSD
ie)
Spindle
Motor
drive
(Velocity
control
in
the
CLV-P
mode)
77 VCoo1 O Vco output signal (When the state is lock by means of PBFR, it is 8.643MHz)
78 Vcon | VCO input signal
79
DSPEED
|
Double
speed
mode
control
(H
:
Normal
Speed,
L
:
Double
Speed)
80
APDO02
ie)
Analog
PLLCharge
Pump
output
for
Double
Speed
mode
-
25
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RCD-750