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COMe-P2020 User Guide
45
Table 3-6: 0x002: User I/O Port Selection Register
ACTION D7 D6 D5 D4 D3 D2 D1 D0
READ NU NU NU NU cfg_io_ports[0:3]
WRITE NU NU NU NU cfg_io_ports[0:3]
POWER UP11111111
BITFIELD DESCRIPTION
[D3-D0] 0000 PCI Express 1 (×1) (2.5Gbps)? SerDes lane 0
SerDes lanes 1-3 powered down.
0001 SerDes lanes 0-3 powered down.
0010 PCI Express 1 (×1) (2.5 Gbps) ? SerDes lane 0
PCI Express 2 (×1) (2.5 Gbps) ? SerDes lane 1
PCI Express 3 (×2) (2.5 Gbps) ? SerDes lanes 2-3
0011 Reserved
0100 PCI Express 1 (×2) (2.5 Gbps) ? SerDes lanes 0-1
PCI Express 3 (×2) (2.5 Gbps) ? SerDes lanes 2-3
0101 Reserved
0110 PCI Express 1 (×4) (2.5 Gbps) ? SerDes lanes 0-3
0111 SRIO2 (1×) (3.125 Gbps) ? SerDes lane 0
SRIO1 (1×) (3.125 Gbps) ? SerDes lane 1
SerDes lanes 2-3 powered down.
1000 SRIO2 (4×) (1.25 Gbps) ? SerDes lanes 0-3
1001 SRIO2 (4×) (2.5 Gbps) ? SerDes lanes 0-3
1010 SRIO2 (4×) (3.125 Gbps) ? SerDes lanes 0-3
1011 SRIO 2 (1×) (1.25 Gbps) ? SerDes lane 0
SRIO 1 (1×) (1.25 Gbps) ? SerDes lane 1
SGMII eTSEC2 (×1) (1.25 Gbps) ? SerDes lane 2
SGMII eTSEC3 (×1) (1.25 Gbps) ? SerDes lane 3
1100 SRIO 2 (1×) (2.5 Gbps) ? SerDes lane 0
SRIO 1 (1×) (2.5 Gbps) ? SerDes lane 1
SGMII eTSEC2 (×1) (1.25 Gbps) ? SerDes lane 2
SGMII eTSEC3 (×1) (1.25 Gbps) ? SerDes lane 3
1101 PCI Express 1 (×1) (2.5 Gbps) ? SerDes lane 0
SRIO 1 (1×) (2.5 Gbps) ? SerDes lane 1
SGMII eTSEC2 (×1) (1.25 Gbps) ? SerDes lane 2
SGMII eTSEC3 (×1) (1.25 Gbps) ? SerDes lane 3
1110 PCI Express 1 (×1) (2.5 Gbps) ? SerDes lane 0
PCI Express 2 (×1) (2.5 Gbps) ? SerDes lane 1
SGMII eTSEC2 (×1) (1.25 Gbps) ? SerDes lane 2
SGMII eTSEC3 (×1) (1.25 Gbps) ? SerDes lane 3
1111 PCI Express 1 (×2) (2.5 Gbps) ? SerDes lanes 0-1
SGMII eTSEC2 (×1) (1.25 Gbps) ? SerDes lane 2
SGMII eTSEC3 (×1) (1.25 Gbps) ? SerDes lane 3
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