cxa1702ar Sony Electronics, cxa1702ar Datasheet - Page 15

• Manufacturer Part Number: cxa1702ar
• Description: 4-channel Rec/pb Amplifier For 8 Mm Vcr
• Manufacturer: Sony Electronics

1. Description of input conditions
H … Control logic input voltage 2.3 V or more
L … Control logic input voltage 0.6 V or less
— … Independent of H and L
Only for 4 XDECK
H … Control logic input voltage 4.3 V or more (Vcc = 4.75 V)
L … Control logic input voltage 0.6 V or less (Vcc = 4.75 V)
O … Open
Only for 62 PCMREC
H … Control logic input voltage 2.3 V or more
L … Control logic input voltage 0.4 V or less
Control Logic Truth Table
During DECK PCM after-recording 4 XDECK=O …… Inclination of the rising edge of the recording amplifier output bias current 32µA/µs (typ.)
A1
A2
A3
A4
W
G
M
O
Q
A
B
C
D
E
F
H
K
N
P
R
S
T
U
V
X
Y
J
L
I
H — — — — — H
H — — — — — L
H — — — — — H H
H — — — — — L
H — — — — — H
H — — — — — H H
H — — — — — L
H — — — — — L
H — — — — H
H — — — — H H
H — — — — H
H — — — — H H H H H H
H — — — — H H H H H O,L
H — — — — H H
H — — — — H
H — — — — H
L
L
L
L
L
L
L
L
L
L
L
L
L
H H H H — — — — L —
H H
H
H H H
H H
H
H H H
H
H H
H H H
L
L
L
Control logic input condition
H H H — — — — L —
H H H — L
H H H — H H — H O,L
L
L
L
H H — — — — L —
H H — L
H H — H
L
L
L
H — — — — L —
H — H
H — L
L — — — — L —
L — H H — H H
L — L
4 XDECK=L …… Inclination of the rising edge of the recording amplifier output bias current 17µA/µs (typ.)
L
L
L
L
H — H H
H — H O,L
H
H
H H H H
H H H O,L
L — H H
L — H H
L — H O,L
L — H O,L
L
L
L
L
L
L
L
L
H H H
H H H
H H O,L
H H O,L
L
L
L
L
L
L
L
L
L
L
L
L
L O,L
L O,L
L O,L
L O,L
H
H
H
H
V
V
V
V
V
V
V
V
V
V
V
V
V
Operation of each section under respective input condition
P V V V V S S S S
P V V V V V S S S
P V V V V S S V S
P V V V V S V S S
P V V V V S S S V
P P V V V P S S S
P V V P V S S P S
P V P V V S P S S
P V V V P S S S P
P P V V V P S S S
P V P V V S P S S
P V V P V S S P S
P V V V P S S S P
P P V V V P S S S
P V V P V S S P S
P V P V V S P S S
P V V V P S S S P
P P V V V P S S S
P V P V V S P S S
P V V P V S S P S
P V V V P S S S P
—15—
Recording
2. Description of operation mode
O … Operating
V … Video signal is output.
P … PCM signal is output.
1A … 1Ach playback signal is output. 1B … 1Bch playback signal is output.
2A … 2Ach playback signal is output. 2B … 2Bch playback signal is output.
Mu … Playback signal is muted during PCM after-recording and, at the same
… Not operating
time, RFAGC gain is held.
O O O O 2A 1A O O
O O O O 1B 2A O O
O O O O 2B 1B O O
O O O O 1A 2B O O
O O O O 1B 1A O O
O O O O 1A 1B O O
O O O O 2B 2A O O
O O O O 2A 2B O O
O O
O
O O O
O
O O
O O O
O O O Mu Mu O O
O O O Mu Mu O O
O O Mu Mu O O
O O Mu Mu O O
Playback
O Mu Mu O O
O Mu Mu O O
Mu Mu O O
Mu Mu O O
S … Recording amplifier standby.
Output bias current is not
flowing.
(power save)
Video REC
Video REC
PCM REC
DECK
PCM REC
PB
DECK PB
PCM after-
recording
DECK
PCM after-
recording
Operation
CXA1702AR
1A
2A
1B
2B
1A
2A
1B
2B
1A
1B
2A
2B
1A
2A
1B
2B
1A
1B
2A
2B
1A
2A
1B
2B
1A
1B
2A
2B
Mode
recording
PCM
REC
after-
PB