cxa1998bq Sony Electronics, cxa1998bq Datasheet - Page 17

• Manufacturer Part Number: cxa1998bq
• Description: Recording/playback Equalizer Amplifier
• Manufacturer: Sony Electronics

1. System control mode
Playback and recording equalizer
(1) Playback equalizer (120µs/70µs)
(4) Recording mute (Pin 14)
ON/OFF control is performed by 11-bit serial data interface D11 (Pin 26). A fader function is achieved using a
time constant circuit formed with the external capacitor and incorporated 20k resistor.
(5) FP CAL (Pin 48)
The standard resistor setting is 27k , but when resistance value is larger, fo (Hz) is lower, and when
resistance value is smaller, fo (Hz) is higher. (fo: high-band peak frequency)
(6) GP CAL (Pin 1)
The standard resistor setting is 27k , but when resistance value is larger, high-band peak gain is larger, and
when resistance value is smaller, high-band peak gain is smaller.
(2) Playback mute (Pin 13)
ON/OFF control is performed by 11-bit serial data interface D7 (Pin 26). A capacitor for setting the switching
time constant is connected.
(3) Recording equalizer (Normal, CrO
DECK-AB
(serial data
D10 (Pin 25))
REC MODE
B-EQ (Pin 3)
Time constant = 20k
H
L
NORMAL (TYPE
120µs
(DECK A)
According to B-EQ control
L
L
C
A-EQ (Pin 2)
2
I)
, Metal)
70µs
(DECK A)
H
CrO
2
(TYPE II)
M
– 17 –
120µs
(DECK B)
According to A-EQ control
L
B-EQ (Pin 3)
METAL (TYPE IV)
70µs
(DECK B)
M/H
H
CXA1998BQ