信号完整性小结，200G/400G 以太网协议（802.3bs）概览

wenghuichao

MAC	PCS	PMA
Data    Rate	coding	Interface	lane	Level	Baud Rate	BER	channel    IL@Nyquist
200Gbps    400Gbps	64B/66B    256B/257B    RS(544,514)	200GAUI-8 C2C    400GAUI-16 C2C	8    16	NRZ	26.5625GBD	SER<1.1E-5	21.1dB    @13.28G
		200GAUI-8 C2M    400GAUI-16 C2M	8    16	NRZ	26.5625GBD	BER<1E-6	10.2dB    @13.28G
		200GAUI-4 C2C    400GAUI-8 C2C	4    8	PAM4	26.5625GBD	SER<1E-4	20.457dB    @13.28G
		200GAUI-4 C2M    400GAUI-8 C2M	4    8	PAM4	26.5625GBD	BER<1E-5	10.2dB    @13.28G

PMD
Interface	lane	Level	Baud Rate	BER	Fiber	Channel IL	Operating    range	MDI connector
200GBASE-DR4	4	PAM4	26.5625GBD	BER<2.4E-4	SMF	3dB	2m~500m	MPO
200GBASE-FR4    400GBASE-FR8	4    8	PAM4	26.5625GBD	BER<2.4E-4	SMF	4dB	2m~2km
200GBASE-LR4    400GBASE-LR8	4    8	PAM4	26.5625GBD	BER<2.4E-4	SMF	6.3dB	2m~10km
400GBASE-SR16	16	NRZ	26.5625GBD	BER<2.4E-4	MMF	1.8dB    1.9dB	0.5m~70m for OM3    0.5m~100m for OM4/OM5	MPO-16
400GBASE-DR4	4	PAM4	53.125GBD	BER<2.4E-4	SMF	3dB	500m	MPO