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AD8159ASVZ Datasheet(PDF) 17 Page - Analog Devices |
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AD8159ASVZ Datasheet(HTML) 17 Page - Analog Devices |
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17 / 24 page ![]() AD8159 Rev. A | Page 17 of 24 Table 12. Loopback, Bicast, and Port Select Settings1 LB_A LB_B LB_C SEL BICAST OUT_A OUT_B OUT_C 0 0 0 0 0 IN_C Idle IN_A 0 0 0 0 1 IN_C IN_C IN_A 0 0 0 1 0 Idle IN_C IN_B 0 0 0 1 1 IN_C IN_C IN_B 0 0 1 0 0 IN_C Idle IN_C 0 0 1 X 1 IN_C IN_C IN_C 0 0 1 1 0 Idle IN_C IN_C 0 1 0 0 X IN_C IN_B IN_A 0 1 0 1 0 Idle IN_B IN_B 0 1 0 1 1 IN_C IN_B IN_B 0 1 1 0 X IN_C IN_B IN_C 0 1 1 1 0 Idle IN_B IN_C 0 1 1 X 1 IN_C IN_B IN_C 1 0 0 0 0 IN_A Idle IN_A 1 0 0 0 1 IN_A IN_C IN_A 1 0 0 1 X IN_A IN_C IN_B 1 0 1 0 0 IN_A Idle IN_C 1 0 1 X 1 IN_A IN_C IN_C 1 0 1 1 X IN_A IN_C IN_C 1 1 0 0 X IN_A IN_B IN_A 1 1 0 1 X IN_A IN_B IN_B 1 1 1 X X IN_A IN_B IN_C 1 Switching is done on a lane-by-lane basis, but input equalization, output pre-emphasis, and loopback are set for each port. PORT C REVERSE (CROSSOVER) CAPABILITY X4 X4 X4 X4 X4 X4 1:2 DEMUX OUT_A[3:0] OUT_B[3:0] IN_B[3:0] IN_A[3:0] X4 REVERSE_C 2:1 MUX IN_C [3:0]/OUT_C[3:0] X4 OUT_C [3:0]/IN_C[3:0] I/O SWITCH I/O SWITCH Port C has a reversible I/O capability. The sense (input vs. output) of the Port C pins can be swapped by toggling the REVERSE_C control pin. This feature has been added to facilitate the connection to different ASICs that may have the opposite pinouts. Figure 37 illustrates the reversible I/O function of Port C, and Table 5 describes this function in a selection table that corresponds to a TQFP-100 package. Please note that the reverse capability is supported only on Port C. Figure 37. Port C Reverse I/O Capability |
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