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AD6688 Folha de dados(PDF) 75 Page - Analog Devices |
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AD6688 Folha de dados(HTML) 75 Page - Analog Devices |
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75 / 138 page ![]() Data Sheet AD6688 Rev. 0 | Page 75 of 138 No. of Virtual Converters Supported (Same Value as M) JESD204B Serial Line Rate2 Supported Decimation Rates for Lane Rate = 1.7 Gbps to 3.4 Gbps Supported Decimation Rates for Lane Rate = 3.4 Gbps to 6.8 Gbps Supported Decimation Rates for Lane Rate = 6.8 Gbps to 13.5 Gbps Supported Decimation Rates for Lane Rate = 13.5 Gbps to 15.5 Gbps JESD204B Transport Layer Settings3 L M F S HD N N' CS K 2 40 × fOUT 4, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48 2, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 1 2 4 1 0 8 to 16 16 0 to 3 See Note 4 2 40 × fOUT 4, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48 2, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 1 2 8 2 0 8 to 16 16 0 to 3 See Note 4 2 20 × fOUT 2, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 1, 2, 3, 4 2 2 2 1 0 8 to 16 16 0 to 3 See Note 4 2 20 × fOUT 2, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 1, 2, 3, 4 2 2 4 2 0 8 to 16 16 0 to 3 See Note 4 2 10 × fOUT 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 1, 2, 3, 4 1, 2 4 2 1 1 1 8 to 16 16 0 to 3 See Note 4 2 10 × fOUT 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 1, 2, 3, 4 1, 2 4 2 2 2 0 8 to 16 16 0 to 3 See Note 4 2 5 × fOUT 1, 2, 3, 4, 5, 6, 8 1, 2, 3, 4 1, 2 1 8 2 1 2 1 8 to 16 16 0 to 3 See Note 4 2 5 × fOUT 1, 2, 3, 4, 5, 6, 8 1, 2, 3, 4 1, 2 1 8 2 2 4 0 8 to 16 16 0 to 3 See Note 4 4 80 × fOUT 8, 16, 20, 24, 30, 40, 48 4, 8, 10, 12, 16, 20, 24, 30, 40, 48 2, 4, 6, 8, 10, 12, 16, 20, 24, 30 2, 4, 6, 8, 10, 12, 16 1 4 8 1 0 8 to 16 16 0 to 3 See Note 4 4 40 × fOUT 4, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48 2, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 2 4 4 1 0 8 to 16 16 0 to 3 See Note 4 4 40 × fOUT 4, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48 2, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 2 4 8 2 0 8 to 16 16 0 to 3 See Note 4 4 20 × fOUT 2, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 1, 2, 3, 4 4 4 2 1 0 8 to 16 16 0 to 3 See Note 4 4 20 × fOUT 2, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 1, 2, 3, 4 4 4 4 2 0 8 to 16 16 0 to 3 See Note 4 4 10 × fOUT 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 1, 2, 3, 4 1, 2 8 4 1 1 1 8 to 16 16 0 to 3 See Note 4 4 10 × fOUT 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16 1, 2, 3, 4, 5, 6, 8 1, 2, 3, 4 1, 2 8 4 2 2 0 8 to 16 16 0 to 3 See Note 4 8 160 × fOUT 16, 40, 48 8, 16, 20, 24, 40, 48 4, 8, 12, 16, 20, 24, 40, 48 4, 8, 12, 16, 20, 24 1 8 16 1 0 8 to 16 16 0 to 3 See Note 4 8 80 × fOUT 8, 16, 20, 24, 40, 48 4, 8, 10, 12, 16, 20, 24, 40, 48 2, 4, 6, 8, 10, 12, 16, 20, 24 2, 4, 6, 8, 10, 12, 16 2 8 8 1 0 8 to 16 16 0 to 3 See Note 4 8 40 × fOUT 4, 8, 10, 12, 16, 20, 24, 40, 48 2, 4, 6, 8, 10, 12, 16, 20, 24 2, 4, 6, 8, 10, 12, 16 2, 4, 6, 8 4 8 4 1 0 8 to 16 16 0 to 3 See Note 4 8 40 × fOUT 4, 8, 10, 12, 16, 20, 24, 40, 48 2, 4, 6, 8, 10, 12, 16, 20, 24 2, 4, 6, 8, 10, 12, 16 2, 4, 6, 8 4 8 8 2 0 8 to 16 16 0 to 3 See Note 4 8 20 × fOUT 2, 4, 6, 8, 10, 12, 16, 20, 24 2, 4, 6, 8, 10, 12, 16 2, 4, 6, 8 2, 4 8 8 2 1 0 8 to 16 16 0 to 3 See Note 4 8 20 × fOUT 2, 4, 6, 8, 10, 12, 16, 20, 24 2, 4, 6, 8, 10, 12, 16 2, 4, 6, 8 2, 4 8 8 4 2 0 8 to 16 16 0 to 3 See Note 4 1 Due to the internal clock requirements, only certain decimation rates are supported for certain link parameters. 2 JESD204B transport layer descriptions are as follows: L is the number of lanes per converter device (lanes per link); M is the number of virtual converters per converter device (virtual converters per link); F is the octets per frame; S is the samples transmitted per virtual converter per frame cycle; HD is the high density mode; N is the virtual converter resolution (in bits); N' is the total number of bits per sample (JESD204B word size); CS is the number of control bits per conversion sample; K is the number of frames per multiframe. 3 fADC_CLK is the ADC sample rate; DCM = chip decimation ratio; fOUT is the output sample rate = fADC_CLK/DCM; SLR is the JESD204B serial lane rate. The following equations must be met due to internal clock divider requirements: SLR ≥ 1.6875 Gbps and SLR ≤ 15.5 Gbps; SLR/40 ≤ fADC_CLK; least common multiple (20 × DCM × fOUT/SLR, DCM) ≤ 64. When the SLR is ≤ 15500 Mbps and > 13500 Mbps, Register 0x056E must be set to 0x30. When the SLR is ≤ 13500 Mbps and ≥ 6750 Mbps, Register 0x056E must be set to 0x00. When the SLR is < 6750 Mbps and ≥ 3375 Mbps, Register 0x056E must be set to 0x10. When the SLR is < 3375 Mbps and ≥ 1687.5 Mbps, Register 0x056E must be set to 0x50. 4 Only valid K × F values that are divisible by 4 are supported: for F = 1, K = 20, 24, 28, 32; for F = 2, K = 12, 16, 20, 24, 28, 32; for F = 4, K = 8, 12, 16, 20, 24, 28, 32; for F = 8, K = 4, 8, 12, 16, 20, 24, 28, 32; and for F = 16, K = 4, 8, 12, 16, 20, 24, 28, 32. |
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