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AD9957 bảng dữ liệu(PDF) 10 Page - Analog Devices |
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AD9957 bảng dữ liệu(HTML) 10 Page - Analog Devices |
10 / 60 page AD9957 Rev. 0 | Page 10 of 60 Pin No. Mnemonic I/O1 Description 59 I/O_UPDATE I Input/Output Update; Digital Input Or Output (Active High) Depending on the Internal I/O Update Active Bit. A high on this pin indicates a transfer of the contents of the I/O buffers to the corresponding internal registers. 60 OSK I Output Shift Keying, Digital Input (Active High). When using OSK (manual or automatic), this pin controls the OSK function. See the Output Shift Keying (OSK) section of the data sheet for details. When not using OSK, tie this pin high. 67 SDIO I/O Serial Data Input/Output, Digital Input/Output (Active High). This pin can be either unidirectional or bidirectional (default), depending on configuration settings. In bidirectional serial port mode, this pin acts as the serial data input and output. In unidirectional, it is an input only. 68 SDO O Serial Data Output, Digital Output (Active High). This pin is only active in unidirectional serial data mode. In this mode, it functions as the output. In bidirectional mode, this pin is not operational and should be left floating. 69 SCLK O Serial Data Clock. Digital clock (rising edge on write, falling edge on read). This pin provides the serial data clock for the control data path. Write operations to the AD9957 use the rising edge. Readback operations from the AD9957 use the falling edge. 70 CS I Chip Select, Digital Input (Active Low). Bringing this pin low enables the AD9957 to detect serial clock rising/falling edges. Bringing this pin high causes the AD9957 to ignore input on the serial data pins. 71 I/O_RESET I Input/Output Reset, Digital Input (Active High). Rather than resetting the entire device during a failed communication cycle, when brought high, this pin resets the state machine of the serial port controller and clears any I/O buffers that have been written since the last I/O update. When unused, tie this pin to ground to avoid accidental resets. 80 IOUT O Open Source DAC Complementary Output Source. Analog output, current mode. Connect through 50 Ω to AGND. 81 IOUT O Open Source DAC Output Source. Analog output, current mode. Connect through 50 Ω to AGND. 84 DAC_RSET O Analog Reference Pin. This pin programs the DAC output full-scale reference current. Attach a 10 kΩ resistor to AGND. 90 REF_CLK I Reference Clock Input. Analog input. See the REFCLK Overview section for more details. 91 REF_CLK I Complementary Reference Clock Input. Analog input. See the REFCLK Overview section for more details. 94 REFCLK_OUT O Reference Clock Output. Analog output. See the REFCLK Overview section for more details. 95 XTAL_SEL O Crystal Select. See the REFCLK Overview section for more details. 1 I = input, O = output. |
Số phần tương tự - AD9957_07 |
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Mô tả tương tự - AD9957_07 |
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