Read Panasonic KX-NCP1180X Service Manual online
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KX-NCP1180X
4.2.2.9.
CODEC Function
• CODEC Control...IC201, IC202
This uses PEB2466 by Infineon. CODEC interface DCLK, CS, DOUT and DIN configure the analog characteristic such as BN,
frequency characteristic, level, lateral consonant. Also, the built-in I/O port is used as HOOK detection, DTMF detection, BELL
relay control and DIAG relay control.
frequency characteristic, level, lateral consonant. Also, the built-in I/O port is used as HOOK detection, DTMF detection, BELL
relay control and DIAG relay control.
• A/D, D/A Conversion
This converts 4 wire analog signal and G.711 format PCM (
µ/A).
4.2.2.10. Surge Protection
A gas arrester (SA1) with the discharge voltage 230V is mounted between T and SFG, R and SFG.
And a discharge tube (SA3) with the discharge voltage 1KV is mounted between SFG and FG. Furthermore, ZNR (ZNR1) with
the discharge voltage 82V is mounted on the PBX side of the photo MOS relay for adding line.
And a discharge tube (SA3) with the discharge voltage 1KV is mounted between SFG and FG. Furthermore, ZNR (ZNR1) with
the discharge voltage 82V is mounted on the PBX side of the photo MOS relay for adding line.
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