cxa1898q Sony Electronics, cxa1898q Datasheet - Page 15

• Manufacturer Part Number: cxa1898q
• Description: Recording/playback Equalizer Amplifier
• Manufacturer: Sony Electronics

1. System control mode
Playback and recording equalizer
(1) Playback equalizer (120µs/70µs)
Muting is achieved by varying the recording equalizer amplifier gain just like an electronic volume, according to
the DC voltage applied to the REC MUTE pin.
(4) FP CAL (Pin 4)
The standard resistor setting is 27k , but when resistance value is larger, fo (Hz) is low, and when resistance
value is smaller, fo (Hz) is high.
(5) Gp Cal (Pin 5)
The standard resistor setting is 27k , but when resistance value is larger, gain is larger, and when resistance
value is smaller, gain is smaller.
(2) Recording equalizer (Normal, CrO
(3) Recording mute (Pin 12)
DECK-AB
(serial data
D10 (Pin 25))
Control voltage
B-EQ (Pin 11)
REC MODE
Rec Mute
H
L
Normal (Type I)
GND
120µs
(A DECK)
According to B EQ control
Mute OFF
L
VCL
L
A-EQ (Pin 10)
0.5V
2
, Metal)
70µs
(A DECK)
CrO
2
H
(Type II)
M
–7dB attenuation
– 15 –
2.0V
120µs
(B DECK)
According to A EQ control
Metal (Type IV)
L
B-EQ (Pin 11)
H
3.5V
70µs
(B DECK)
M/H
Mute ON
VCH
V
CC
CXA1898Q