CXA1563S View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

CXA1563S

Dolby∗ B-C Type Noise Reduction System with Built-in S type Switch

Sony Semiconductor 

CXA1563M/S

4) Reference level

The CXA1563M/S Dolby level is –6dBm (388mVrms), and is measured at the recording output pin (REC

OUT) in the NR OFF mode. The reference level of the recording input pin (LINE IN), playback input pin (PB

IN) and line output pin (LINE OUT) are defined as the levels which provide Dolby level at the recording output

pin in NR OFF mode.

5) MPX Filter

The CXA1563M/S provides an MPX (FM multiplex) filter ON/OFF function.

Connect the MPX filter between MPX IN (Pins 4 and 21) and MPX OUT (Pins 5 and 20). In MPX ON mode,

the line input signal is fed to the NR processor via the MPX buffer amplifier and MPX filter. In MPX OFF

mode, the signal bypasses the buffer amplifier and filter, and is fed directly to the NR processor. The MPX

buffer amplifier gain is 10dB. The gain from LINE IN to LINE OUT is 19dB, and from MPX IN to LINE OUT it

is 13dB, for a deviation of 6dB. This means that if a filter with insertion loss of 4dB is used, there is no

fluctuation between MPX ON and MPX OFF.

6) Notes on Operation

If the CXA1563M/S is used without being connected to the CXA1417S/Q encoder unit, SIN (Pins 8 and 21)

must be connected to GND for dual power supply, and to VCT for single power supply. There is a risk of

misoperation if the SIN pins are left open during use.

– 11 –

Share Link: