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ST75C540 Datasheet(PDF) 80 Page - STMicroelectronics |
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ST75C540 Datasheet(HTML) 80 Page - STMicroelectronics |
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80 / 84 page  XIX - APPENDIX A : MODES OF OPERATION (continued) DUAL RAM INTERFACE 15 ADC MUTE DAC Line HYBRID TxA1 TxA2 RxA ADC 14 11 10 MIC3 8 MIC1 9 MIC2 79 SPK2 78 MUTE 77 SPK3 76 MUTE 2 SPK1 1 MUTE [0..-30]dB Step 3dB DAC ATT_LOC ATT_TX FAX TRANSMITTER DG FAX RECEIVER 4 TONE DETECTORS V.21 FLAG DETECTOR DG Programmable Attenuation Addition of Signals Automatic Gain DTMF DETECTOR (V.21ch2 only) HANDSHAKE AND STATUS REPORT HDLC Rx HDLC Tx 42 SINTR SD[0..7] Figure 51 : Fax Modem Mode (MODEM) ECHO CANCELLER DUAL RAM INTERFACE 15 ADC MUTE DAC Line HYBRID TxA1 TxA2 RxA ADC 14 11 10 MIC3 8 MIC1 9 MIC2 79 SPK2 78 MUTE 77 SPK3 76 MUTE 2 SPK1 1 MUTE [0..-30]dB Step 3dB DAC ATT_LOC ATT_TX MODEM TRANSMITTER MODEM RECEIVER DG Programmable Attenuation Addition of Signals Automatic Gain HANDSHAKE AND STATUS REPORT 42 SINTR SD[0..7] UART HDLC Rx UART HDLC Tx Figure 52 : Data Modem Mode (Full Duplex Modem) (ST75C540 only) ST75C530 - ST75C540 80/84 |
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