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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STA311B датащи(PDF) 17 Page - STMicroelectronics |
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STA311B датащи(HTML) 17 Page - STMicroelectronics |
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17 / 102 page  DocID024340 Rev 1 17/102 STA311B Serial audio interface 102 4 Serial audio interface The STA311B audio serial input interfaces with standard digital audio components and accepts a number of serial data formats. The STA311B always acts as a slave when receiving audio input from standard digital audio components. Serial data for eight channels is provided using 6 input pins: left/right clock LRCKI, serial clock BICKI, serial data 1 and 2 SDI_12, serial data 3 and 4 SDI_34, serial data 5 and 6 SDI_56, and serial data 7 and 8 SDI_78. The SAI/SAIFB register (configuration register B, address 0x01) is used to specify the serial data format. The default serial data format is I²S, MSB-first. 4.1 Timings In the STA311B, the BICKI and LRCKI pins are configured as inputs and they must be supplied by the external peripheral. Figure 3. Timing diagram for SAI interface Table 8. Timing parameters for slave mode Symbol Parameter Min Typ Max Unit tBCy BICK cycle time 50 - - ns tBCH BICK pulse width high 20 - - ns tBCL BICK pulse width low 20 - - ns tLRSU LRCKI setup time to BICKI strobing edge 10 - - ns tLRH LRCKI hold time to BICKI strobing edge 10 - - ns tDD SDI propagation delay from BICKI active edge 0 - 10 ns tBCy tDS tLRH tLRSU tDD LRCKI BICKI SDIxx tBCH tBCL |
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