KX-TDA1178X (serv.man2) - Panasonic PBX Service Manual Supplement (repair manual). Page 7

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7
KX-TDA1178X
• CODEC interface
Can connect up to 12 Silicon Labs Si32261, and is intended for enabling the line control.
• GPIO interface
Parallel interface that is arbitrarily programmable bidirectionally.
1.3.2.3.
CODEC Function (IC300A-W)
Silicon Labs Si32261 CODEC is installed. The analogue features such as BN, frequency characteristic, volume level, sidetone are
configured by PLD CODEC interface DCLK, CS, DOUT, DIN. Also, it converts A/D to D/A, and 4-line-analogue signal to PCM code
in G.711 format. 
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