Table 6-9. 4450 RGMII/RTBI MAC/PHY modes Network pin mappings
Pin Name
MAC-RGMII
RGMII Signal
nx_tx_ctl
MAC-RTBI
RTBI Signal
nx_txd[4]
PHY-RGMII
PHY-RTBI
RTBI Signal
nx_rxd[4]
I/O
out
out
I/O
out
out
RGMII Signal I/O
I/O
out
out
nx_ctrl_0
nx_rx_ctl
out
out
nx_bus0[3:0]
nx_txd[3:0]
nx_txd[3:0]
nx_rxd[3:0]
nx_rxd[3:0]
Note
nx = n0 or n1
Table 6-12 provides the functional signal names and mapping for the Network ports if it is
desired to run in SERDES mode.
6.2.3.2
Network GMAC RGMII/RTBI Connection Diagrams
PHY
4450
nx_rxc
nx_clk_1
nx_ctrl_1
RXC
nx_rx_ctl
nx_rxd[3:0]
RX_CTL
RD[3:0]
nx_bus1[3:0]
nx_txc
nx_clk_0
nx_crtl_0
TXC
nx_tx_ctl
TX_CTL
TD[3:0]
nx_txd[3:0]
nx_bus0[3:0]
Note
1. nx = n0 or n1.
Figure 6-11. Network RGMII MAC-Mode
4450 – Data Sheet, DS-0131-06
Page44
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