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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADS1258IPHPREP датащи(PDF) 39 Page - Texas Instruments |
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ADS1258IPHPREP датащи(HTML) 39 Page - Texas Instruments |
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39 / 57 page  ADS1258-EP www.ti.com SBAS445C – MARCH 2009 – REVISED DECEMBER 2009 REGISTERS Table 12. Register Map ADDRESS REGISTER DEFAULT Bits A[3:0] NAME VALUE BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 00h CONFIG0 0Ah 0 SPIRST MUXMOD BYPAS CLKENB CHOP STAT 0 01h CONFIG1 83h IDLMOD DLY2 DLY1 DLY0 SBCS1 SBCS0 DRATE1 DRATE0 02h MUXSCH 00h AINP3 AINP2 AINP1 AINP0 AINN3 AINN2 AINN1 AINN0 03h MUXDIF 00h DIFF7 DIFF6 DIFF5 DIFF4 DIFF3 DIFF2 DIFF1 DIFF0 04h MUXSG0 FFh AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 05h MUXSG1 FFh AIN15 AIN14 AIN13 AIN12 AIN11 AIN10 AIN9 AIN8 06h SYSRED 00h 0 0 REF GAIN TEMP VCC 0 OFFSET 07h GPIOC FFh CIO7 CIO6 CIO5 CIO4 CIO3 CIO2 CIO1 CIO0 08h GPIOD 00h DIO7 DIO6 DIO5 DIO4 DIO3 DIO2 DIO1 DIO0 09h ID 8Bh ID7 ID6 ID5 ID4 ID3 ID2 ID1 ID0 CONFIG0: CONFIGURATION REGISTER 0 (Address = 00h) 7 6 5 4 3 2 1 0 0 SPIRST MUXMOD BYPAS CLKENB CHOP STAT 0 Default = 0Ah. Bit 7 Must be 0 (default) Bit 6 SPIRST SPI Interface Reset Timer This bit sets the number of fCLK cycles in which SCLK is inactive the SPI interface will reset. This places a lower limit on the frequency of SCLK in which to read or write data to the device. The SPI interface only is reset and not the device itself. When the SPI interface is reset, it is ready for a new command. 0 = Reset when SCLK inactive for 4096fCLK cycles (256µs, fCLK = 16MHz) (default). 1 = Reset when SCLK inactive for 256fCLK cycles (16µs, fCLK = 16MHz). Bit 5 MUXMOD This bit sets either the Auto-Scan or Fixed-Channel mode of operation. 0 = Auto-Scan Mode (default) In Auto-Scan mode, the input channel selections are eight differential channels (DIFF0–DIFF7) and 16 single-ended channels (AIN0–AIN15). Additionally, five internal monitor readings can be selected. These selections are made in registers MUXDIF, MUXSG0, MUXSG1, and SYSRED. In this mode, settings in register MUXSCH have no effect. See the Auto-Scan Mode section for more details. 1 = Fixed-Channel Mode In Fixed-Channel mode, any of the analog input channels may be selected for the positive measurement and the negative measurement channels. The inputs are selected in register MUXSCH. In this mode, registers MUXDIF, MUXSG0, MUXSG1, and SYSRED have no effect. Note that it is not possible to select the internal monitor readings in this mode. Bit 4 BYPAS This bit selects either the internal or external connection from the multiplexer output to the ADC input. 0 = ADC inputs use internal multiplexer connection (default). 1 = ADC inputs use external ADC inputs (ADCINP and ADCINN). Note that the Temperature, VCC, Gain, and Reference internal monitor readings automatically use the internal connection, regardless of the BYPAS setting. The Offset reading uses the setting of BYPAS. Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 39 Product Folder Link(s): ADS1258-EP |
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