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WM8195 Datasheet(PDF) 3 Page - Wolfson Microelectronics plc |
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WM8195 Datasheet(HTML) 3 Page - Wolfson Microelectronics plc |
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3 / 31 page  Advanced Information WM8195 w AI Rev 2.0 September 2002 3 PIN NAME TYPE DESCRIPTION 21 OP[0] Digital output 22 OP[1] Digital output 23 OP[2] Digital output Pins OP[13:0] form a Hi-Z digital bi-directional bus. There are several modes: Hi-Z: when OEB = 1. 14-bit output: 14-bit data is output on OP[13:0]. 8-bit multiplexed output: data is output on OP[13:6] at 2 ∗ ADC conversion rate. 7-bit multiplexed output: data is output on OP[13:6] at 2 ∗ ADC conversion rate. 4-bit multiplexed output: data is output on OP[13:10] at 4 ∗ ADC conversion rate. See Output Formats section in Device Description for further details. Input 8-bit: control data is input on OP[13:6] in parallel mode when SCK/RNW = 0, and SEN/STB = 0. Output 8-bit: register read back data is output in parallel on OP[13:6] when SCK/RNW = 1, and SEN/STB = 0, or in serial on pin SDO when SEN/STB = 1. 24 DVDD2 Supply Digital I/O supply (3.3V/5V). 25 DGND2 Supply Digital ground (0V). 26 OP[3] Digital output 27 OP[4] Digital output 28 OP[5] Digital output 29 OP[6] Digital I/O See pins 21 to 23 for details. 30 DGND3 Supply Digital ground (0V). 31 OP[7] Digital I/O 32 OP[8] Digital I/O 33 OP[9] Digital I/O 34 OP[10] Digital I/O See pins 21 to 23 for details. 35 DVDD3 Supply Digital I/O supply (3.3V/5V). 36 DGND4 Supply Digital ground (0V). 37 OP[11] Digital I/O 38 OP[12] Digital I/O 39 OP[13]/SDO Digital I/O See pins 21 to 23 for details. If the device has been configured to use the serial interface, pin OP[13]/SDO may be used to output register read-back data when OEB = 0 and SEN has been pulsed high. See Serial Interface sections in Device Description for further details. 40 DGND5 Supply Digital ground (0V). 41 NC No connection. 42 NRESET Digital input Reset input, active low. This signal forces a reset of all internal registers and selects whether the serial or parallel control interface is used. See pin SEN/STB. 43 AVDD1 Supply Analogue supply (5V). 44 AVDD2 Supply Analogue supply (5V). 45 AGND5 Supply Analogue ground (0V). 46 AGND6 Supply Analogue ground (0V). 47 VRB Analogue output Lower reference voltage. This pin must be capacitively decoupled to AGND. 48 VRT Analogue output Lower reference voltage. This pin must be capacitively decoupled to AGND. |
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