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ST5092TQFPTR 数据表(PDF) 4 Page - STMicroelectronics |
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ST5092TQFPTR 数据表(HTML) 4 Page - STMicroelectronics |
4 / 29 page PIN FUNCTIONS (TQFP44) Pin Name Description 1 N.C. Not Connected. 2,3 VFr+,VFr– Receive analog earpiece amplifier complementary outputs. These outputs can drive directly earpiece transductor. The signal at this output can be the summ of: - Receive Speech signal from DR, - Internal Tone Generator, - Sidetone signal. 4 N.C. Not Connected. 5,6 VLr+,VLr– Receive analog extra amplifier complementary outputs. The signal at these outputs can be the sum of: - Receive Speech signal from DR, - Internal Tone generator, - Sidetone signal. 7 N.C. Not Connected. 8 GNDP Power ground. VFr and VLr driver are referenced to this pin. GNDP and GND must be connected together close to the device. 9 N.C. Not Connected. 10 DR Receive data input: Data is shifted in during the assigned Received time slots In delayed and non- delayed normal frame synchr. modes voice data byte is shifted in at the MCLK frequency on the falling edges of MCLK, while in non-delayed reverse frame sinchr. mode voice data byte is shifted in at the MCLK frequency on the rising edges of MCLK. 11,12,13 N.C. Not Connected. 14 CCLK Control Clock input: This clock shifts serial control information into CI and out from CO when the CS- input is low, depending on the current instruction. CCLK may be asynchronous with the other system clocks. 15 CS- Chip Select input: When this pin is low, control information is written into and out from the ST5092 via CI and CO pins. 16 CI Control data Input: Serial Control information is shifted into the ST5092 on this pin when CS- is low on the rising edges of CCLK. 17 BZ Pulse width modulated buzzer driver output. 18 VCC Positive power supply input for the digital section. 19 CO Control data Output: Serial control/status information is shifted out from the ST5092 on this pin when CS- is low on the falling edges of CCLK. 20 DX Transmit Data ouput: Data is shifted out on this pin during the assigned transmit time slots. Elsewhere DX output is in the high impendance state. In delayed and non-delayed normal frame synchr. modes, voice data byte is shifted out from TRISTATE output DX at the MCLK on the rising edge of MCLK, while in non-delayed reverse frame synchr mode voice data byte is shifted out on the falling edge of MCLK. 21 GND Ground: All digital signals are referenced to this pin. 22,23 N.C. Not Connected. 24 FS Frame Sync input: This signal is a 8kHz clock which defines the start of the transmit and receive frames. Either of three formats may be used for this signal: non delayed normal mode, delayed mode, and non delayed reverse mode. 25 MCLK Master Clock Input: This signal is used by the switched capacitor filters and the encoder/decoder sequencing logic. Values must be 512 kHz, 1.536 MHz, 2.048 MHz or 2.56 MHz selected by means of Control Register CRO. MCLK is used also to shift-in and out data. 26 LO A logic 1 written into DO (CR1) appears at LO pin as a logic 0 A logic 0 written into DO (CR1) appears at LO pin as a logic 1. 27,28,29 N.C. Not Connected. 30 MIC2- Second negative high impedance input to transmit pre-amplifier for microphone connection. 31 MIC2+ Second Positive high impedance input to transmit pre-amplifier for microphone connection. 32 N.C. Not Connected. 33 MIC1- Negative high impedance input to transmit pre-amplifier for microphone connection. 34 MIC1+ Positive high impedance input to transmit pre-amplifier for microphone connection. 35 N.C. Not Connected. 36 GNDA Analog Ground: All analog signals are referenced to this pin. GND and GNDA must be connected together close to the device. 37 MIC3- Third negative high impedance output to transmit preamplifier for microphone connection. 38 MIC3+ Third positive high impedance output to transmit preamplifier for microphone connection. 39,40 N.C. Not Connected. 41 VCCA Positive power supply input for the analog section. VCC and VCCA must be directly connect ed t oget her. 42 VCCP Positive power supply input for the power section. VCCP and VCC must be connected together. 43,44 N.C. Not Connected. ST5092 4/29 |
类似零件编号 - ST5092TQFPTR |
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类似说明 - ST5092TQFPTR |
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