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ADC34RF52 Datasheet(PDF) 70 Page - Texas Instruments |
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ADC34RF52 Datasheet(HTML) 70 Page - Texas Instruments |
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70 / 105 page ![]() Figure 6-70. Register 0x2D (JESD page) 7 6 5 4 3 2 1 0 0 0 0 0 0 JESD SEQ SEL R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 Table 6-71. Register 0x2D Field Descriptions Bit Field Type Reset Description 7-3 0 R/W 0 Must write 0 2-0 JESD SEQ SEL R/W 000 This register selects the JESD test pattern sequence 0: Test sequence disabled 1: Repeat D21.5 high frequency pattern for random jitter (RJ) 2: Repeat K28.5 mixed frequency pattern for deterministic jitter (DJ) 3: Repeat initial lane alignment (ILA) sequence 4: Modified random pattern 5: Scrambled jitter pattern 6: Repeat K28.7 low frequency pattern 7: Short test pattern Figure 6-71. Register 0x2E (JESD page) 7 6 5 4 3 2 1 0 RAMP INCR 0 RAMP EN ALT PAT 0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 Table 6-72. Register 0x2E Field Descriptions Bit Field Type Reset Description 7-4 RAMP INCR R/W 0000 This register value sets the increment step size for the ramp pattern on 16-bit output. The step size is RAMP INCR plus 1. 3 0 R/W 0 Must write 0 2 RAMP EN R/W 0 Enables RAMP output pattern in the TRANSPORT LAYER. 1 ALT PAT R/W 0 Enables a toggle pattern switching between 0x0000 and 0xFFFF in the TRANSPORT LAYER 0 0 R/W 0 Must write 0 Figure 6-72. Register 0x2F (JESD page) 7 6 5 4 3 2 1 0 0 SERDES PRBS SERDES PRBS EN 0 0 0 0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 Table 6-73. Register 0x2F Field Descriptions Bit Field Type Reset Description 7 0 R/W 0 Must write 0 6-5 SERDES PRBS R/W 0 This register selects the PRBS pattern in the LINK LAYER (no 8b/10b encoding). PRBS pattern must be enabled (D4). 0: PRBS 27-1 1: PRBS 215-1 2: PRBS 223-1 3: PRBS 231-1 4 SERDES PRBS EN R/W 0 This register enables PRBS test pattern in the LINK LAYER 0: Test pattern mode disabled 1: PRBS test pattern mode enabled 3-0 0 R/W 0 Must write 0 ADC34RF55 SBAS988 – NOVEMBER 2023 www.ti.com 70 Submit Document Feedback Copyright © 2023 Texas Instruments Incorporated Product Folder Links: ADC34RF55 |
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