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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TAS1020APFB датащи(PDF) 13 Page - Texas Instruments |
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TAS1020APFB датащи(HTML) 13 Page - Texas Instruments |
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13 / 114 page  1–7 1.7 Terminal Functions—External MCU Mode (Continued) TERMINAL NAME PIN TYPE NO. I/O DESCRIPTION VREN CMOS 42 O General-purpose active-low output which is memory mapped. XINT CMOS 15 I External interrupt: An active low input used by external circuitry to interrupt the on-chip 8052 MCU. XTALI CMOS 47 I Crystal input: Input to the on-chip oscillator from an external 6-MHz crystal. XTALO CMOS 46 O Crystal output: Output from the on-chip oscillator to an external 6-MHz crystal. 1.8 Device Operation Modes The EXTEN and TEST pins define the mode that the TAS1020A is in after reset. MODE EXTEN TEST Normal mode – internal MCU 0 0 External MCU mode 1 0 Factory test 0 1 Factory test 1 1 1.9 Terminal Assignments for Codec Port Interface Modes The codec port interface has five modes of operation that support AC97, I2S, and AIC codecs. There is also a general-purpose mode that is not specific to a serial interface. The mode is programmed by writing to the mode select field of the codec port interface configuration register 1 (CPTCNF1). The codec port interface terminals CSYNC, CSCLK, CDATO, CDATI, CRESET, and CSCHNE take on functionality appropriate to the mode programmed as shown in the following table. TERMINAL GP AIC AC ’97 v1.X AC ’97 v2.X I2S I2S NO. NAME GP Mode 0 AIC Mode 1 AC 97 v1.X Mode 2 AC 97 v2.X Mode 3 I2S Mode 4 I2S Mode 5 35 CSYNC CSYNC I/O FS O SYNC O SYNC O LRCK O LRCK1 O 37 CSCLK CSCLK I/O SCLK O BIT_CLK I BIT_CLK I SCLK O SCLK1 O 38 CDATO CDATO O DOUT O SD_OUT O SD_OUT O SDOUT1 O SDOUT1 O 36 CDATI CDATI I DIN I SD_IN I SD_IN1 I SDIN1 I SDIN2 I 34 CRESET CRESET O RESET O RESET O RESET O CRESET O SCLK2 O 32 CSCHNE NC O FC O NC O SD_IN2 I SDIN2 I LRCK2 O NOTES: 1. Signal names and I/O direction are with respect to the TAS1020A device. The signal names used for the TAS1020A terminals for the various codec port interface modes reflect the nomenclature used by the codec devices. 2. NC indicates no connection for the terminal in a particular mode. The TAS1020A device drives the signal as an output for these cases. 3. The CSYNC and CSCLK signals can be programmed as either an input or an output in the general-purpose mode. |
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