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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1183957/dp83869hm-impedance-control-of-mac-i-os
根据 IO_MUX_CFG 寄存器、MAC I/O 的阻抗可通过 MAC_IMPEDANT_CTRL 位进行控制。 使用这些位、我们能否控制 TX 和 RX 信号的阻抗？
您好！
这些位只能控制我们的输出引脚阻抗终端；RX。
此致、
Gerome
