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AD9625BBPRL-2.5 Datasheet(PDF) 31 Page - Analog Devices |
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AD9625BBPRL-2.5 Datasheet(HTML) 31 Page - Analog Devices |
31 / 74 page Data Sheet AD9625 Rev. C | Page 29 of 72 TEST MODES ADC CORE FRAMER SERALIZER OUTPUT JESD204B TEST PATTERNS 10 BIT SPI REGISTER 0x061 BITS[5:4] = 01 AND BITS[3:0] ≠ 0000 JESD204B TEST PATTERNS 16 BIT SPI REGISTER 0x061 BITS[5:4] = 00 AND BITS[3:0] ≠ 0000 JESD204B SAMPLE CONSTRUCTION ADC TEST PATTERNS 12 BIT SPI REGISTER 0x00D BITS[3:0] ≠ 0000 TAIL BITS FRAME CONSTRUCTION 8b/10b ENCODER SCRAMBLER (OPTIONAL) Figure 72. Test Modes Table 10. Flexible Output Test Modes from SPI Register 0x00D Output Test Mode Bit Sequence Pattern Name Digital Output Word 1 (Default Twos Complement Format) Digital Output Word 2 (Default Twos Complement Format) Subject to Data Format Select 0000 Off (default) Not applicable Not applicable Yes 0001 Midscale short 0000 0000 0000 = Word 1 Yes 0010 Positive full scale 0111 1111 1111 = Word 1 Yes 0011 Negative full scale 1000 0000 0000 = Word 1 Yes 0100 Alternating checkerboard 1010 1010 1010 0101 0101 0101 No 0101 PN sequence long Not applicable Not applicable Yes 0111 One-/zero-word toggle 1111 1111 1111 0000 0000 0000 No 1000 User test mode User data from Register 0x019 to Register 0x020 User data from Register 0x019 to Register 0x020 Yes 1111 Ramp output N N + 1 No |
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