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ST7570 Datasheet(PDF) 6 Page - STMicroelectronics |
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ST7570 Datasheet(HTML) 6 Page - STMicroelectronics |
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6 / 26 page  Pin connection ST7570 6/26 Doc ID 17526 Rev 2 26 PA_OUT Analog output - - Power amplifier output 27 VDD_REG_1V8 Power - - 1.8 V digital supply / internal regulator output Externally accessible for filtering purposes only 28 VDDIO Power - - 3.3 V – 5 V I/O external supply 29 NC - - - Not used, leave floating 30 NC - - - Not used, leave floating 31 RESERVED6 - - - Pull up to VDDIO 32 NC - - - Not used, leave floating 33 GND Power - - Digital ground 34 VDDIO Power - - 3.3 V – 5 V I/O supply 35 VSSA Power - - Analog ground 36 PRESLOT /ZC/TS/BIT Digital output High Z Disabled Configurable digital output: - Slot synchronization (PRESLOT), - Zero Crossing (ZC), - Timeslot (TS), - Bit synchronization (BIT), - Transmission in progress (TXP), - Reception in progress (RXP), - Transmission or Reception in progress (TXRXP). If not used, this pin can be left floating. 37 ZC_IN_D Digital input High Z Disabled Digital zero-crossing input. Pull up to VDDIO if not used 38 T_REQ Digital input High Z Disabled UART communication control line 39 BR1 Digital input High Z Disabled UART baud rate selection (sampled after each reset event) see Table 3 40 BR0 Digital input High Z Disabled 41 RESERVED0 - - - Connect to GND 42 RESERVED1 - - - Pull up to VDDIO 43 RESERVED2 - - - Pull up to VDDIO 44 RESERVED3 - - - Pull up to VDDIO 45 GND Power - - Digital ground 46 VDD Power - - 1.8 V digital supply. Internally connected to VDD_REG_1V8 Externally accessible for filtering purposes only 47 RESERVED4 - - - Connect to VDDIO 48 RESERVED5 - - - Pull up to VDDIO Table 2. Pin description (continued) Pin Name Type Reset state Pull-up Description |
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