TLC320AD535C-I_16 Datasheet, PDF (9/42 Pages) Texas Instruments – DUAL CHANNEL VOICE/DATA CODEC

1.3 Voice Channel Codec Logic Diagram
TAPI_IN
–
+
TAPI Preamp
20/0 dB Gain
2.5 V/1.5 V
MIC_AUDIO
MIC_BIAS
–
+
Mic Preamp
20/0 dB Gain
2.5 V/1.5 V
HSRX_FB
Phantom Power
2.5 V/1.5 V @ 5 mA
M
I
–
X
E
R
+
2.5 V/1.5 V
Line_In PGA
12 to –36 dB
1.5 dB Noiseless Steps
31 Steps and Mute
HSRXM
HSRXP
–
+
Handset RX (Hybrid)
HS_REF 2.5 V/1.5 V
16-Bit
DAC
–
HSTX_OUT
+
HSTX_IN
–
2.5 V/1.5 V _{Line_Out PGA}
2.5 V/1.5 V
+
Handset TX (Hybrid)
12 to –36 dB
1.5 dB Noiseless Steps
Internal
31 Steps and Mute
+
HS_BUF
–
16-Bit
ADC
–1
+
SPKR_LEFT
–
60-Ω Pwr Spkr Buffer
0 dB or Mute
( Same Polarity)
+
–
SPKR_RIGHT
+
–
600-Ω
Out Buffer
0 dB or Mute
TAPI_OUT
600-Ω Handset Out Buffer
0 dB or Mute
1–3