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TP3067A Arkusz danych(PDF) 3 Page - Texas Instruments |
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TP3067A Arkusz danych(HTML) 3 Page - Texas Instruments |
3 / 20 page TP3064A, TP3067A, TP13064A, TP13067A MONOLITHIC SERIAL INTERFACE COMBINED PCM CODEC AND FILTER SCTS025C – SEPTEMBER 1992 –REVISED JULY 1996 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 Terminal Functions TERMINAL DESCRIPTION NAME NO. DESCRIPTION ANLG GND 2 Analog ground. All signals are referenced to ANLG GND. ANLG LOOP 16 Analog loopback control input. Must be set to logic low for normal operation. When pulled to logic high, the transmit filter input is disconnected from the output of the transmit preamplifier and connected to VPO+ of the receive power amplifier. BCLKR/CLKSEL 9 The bit clock that shifts data into DR after the FSR leading edge. May vary from 64 kHz to 2.048 MHz. Alternately, can be a logic input that selects either 1.536 MHz/1.544 MHz or 2.048 MHz for master clock in synchronous mode. BCLKX is used for both transmit and receive directions (see Table 1). BCLKX 12 The bit clock that shifts out the PCM data on DX. BCLKX can vary from 64 kHz to 2.048 MHz, but must be synchronous with MCLKX. DR 8 Receive data input. PCM data is shifted into DR following the FSR leading edge. DX 13 The 3-state PCM data output that is enabled by FSX. FSR 7 Receive frame sync pulse input that enables BCLKR to shift PCM data in DR. FSR is an 8-kHz pulse train (see Figures 1 and 2 for timing details). FSX 14 Transmit frame sync pulse that enables BCLKX to shift out the PCM data on DX. FSX is an 8-kHz pulse train (see Figures 1 and 2 for timing details). GSX 17 Analog output of the transmit input amplifier. GSX is used to externally set gain. MCLKR/PDN 10 Receive master clock (must be 1.536 MHz, 1.544 MHz, or 2.048 MHz). May be synchronous with MCLKX, but should be synchronous for best performance. When MCLKR is connected continuously low, MCLKX is selected for all internal timing. When MCLKR is connected continuously high, the device is powered down. MCLKX 11 Transmit master clock (must be 1.536 MHz, 1.544 MHz, or 2.048 MHz). May be asynchronous with MCLKR TSX 15 Open-drain output that pulses low during the encoder time slot VBB 20 Negative power supply. VBB = – 5 V ± 5% VCC 6 Positive power supply. VCC = 5 V ± 5% VFRO 5 Analog output of the receive filter VFXI+ 19 Noninverting input of the transmit input amplifier VFXI – 18 Inverting input of the transmit input amplifier VPI 4 Inverting input to the receive power amplifier. Also powers down both amplifiers when connected to VBB VPO+ 1 The noninverted output of the receive power amplifier VPO – 3 The inverted output of the receive power amplifier |
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