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A Wireline Transceiver With 3-bit per Symbol Using Common-Mode NRZ and Different
一种采用共模NRZ和差分PAM-4混合信号实现3比特/符号传输的线缆收发器。
28nm CMOS, 48 Gb/s, 0.117 mm², BER 10⁻¹² at 9.0
线缆收发器共模NRZ差分PAM-43比特/符号偏移基解码
▸使用共模NRZ和差分PAM-4混合信号实现3比特/符号传输
▸采用偏移基PAM-4解码方法提高对共模电压变化的鲁棒性
▸在模拟前端将混合信号分离为NRZ和PAM-4信号
Abstract
This article presents a wireline transceiver using
3-bit per symbol signaling techniques that can simultaneously
modulate and demodulate the common-mode (CM) 1-bit non-
return to zero (NRZ) and differential-mode (DM) 2-bit pulse
amplitude modulation 4 (PAM-4) signals (CMDM-8). The driver
of the transmitter (TX) configured with two different types of
current mode PAM-4 drivers generates CMDM-8, a mixed signal
of single NRZ and differential PAM-4. If the common-mode
voltage (VCM) of the two types