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ADS5270IPFPTG4 Datasheet(PDF) 10 Page - Texas Instruments |
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ADS5270IPFPTG4 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 31 page TEST PATTERNS ADS5270 SBAS293F – JANUARY 2004 – REVISED JANUARY 2009............................................................................................................................................... www.ti.com SERIAL INTERFACE REGISTERS ADDRESS DATA DESCRIPTION REMARKS D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 LVDS BUFFERS (Register 0) All Data Outputs 0 0 Normal ADC Output (default after reset) 0 1 Deskew Pattern 1 0 Sync Pattern See Test Patterns 1 1 Custom Pattern 0 0 Output Current in LVDS = 3.5mA (default after reset) 0 1 Output Current in LVDS = 2.5mA 1 0 Output Current in LVDS = 4.5mA 1 1 Output Current in LVDS = 6.0mA 0 0 0 1 CLOCK CURRENT (Register 1) 0 X X 0 LVDS Clock Output Current IOUT = 3.5mA (default) 0 X X 1 2x LVDS Clock Output Current IOUT = 7.0mA 0 0 0 1 LSB/MSB MODE (Register 1) 0 0 X X LSB First Mode (default after reset) 0 1 X X MSB First Mode 0 0 1 0 POWER-DOWN ADC CHANNELS (Register 2) X X X X Example: 1010 Powers Down Power-Down Channels 1 to 4; D3 is Channels 4 and 2 and for Channel 4 and D0 for Channel 1 Keeps Channels 1 and 3 Active 0 0 1 1 POWER-DOWN ADC CHANNELS (Register 3) X X X X Power-Down Channels 5 to 8; D3 is for Channel 8 and D0 for Channel 5 CUSTOM PATTERN (Registers 4–6) D3 D2 D1 D0 Bits for Custom Pattern See Test Patterns 0 1 0 0 X X X X 0 1 0 1 X X X X 0 1 1 0 X X X X Serial Output(1) LSB MSB ADC Output(2) D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 Deskew Pattern 1 0 1 0 1 0 1 0 1 0 1 0 Sync Pattern 0 0 0 0 0 0 1 1 1 1 1 1 Custom Pattern(3) D0(4) D1(4) D2(4) D3(4) D0(5) D1(5) D2(5) D3(5) D0(6) D1(6) D2(6) D3(6) (1) The serial output stream comes out LSB first by default. (2) D11...D0 represent the 12 output bits from the ADC. (3) D0(4) represents the content of bit D0 of register 4, D3(6) represents the content of bit D3 of register 6, etc. 10 Submit Documentation Feedback Copyright © 2004–2009, Texas Instruments Incorporated Product Folder Link(s): ADS5270 |
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