1 特性

2 应用

3 说明

TUSB522P 是一款支持 5Gbps 数据传输速率的第四代双通道单路 USB 3.1 GEN 1 转接驱动器和信号调节器。该器件采用超低功耗架构，在由 3.3V 电源供电运行时功耗非常低。转接驱动器还支持 USB 3.1 低功耗模式，可进一步降低空闲状态下的功耗。

双通道能力使得该系统能够在发送和接收数据路径上保持信号的完整性。接收器均衡有三种增益设置，用以克服插入损耗和码间串扰造成的通道性能退化。这些设置由 EQ 引脚控制。为了补偿传输线路损耗，输出驱动器还支持使用引脚 DE 配置去加重功能。此外，自动 LFPS 去加重控制有助于实现与 USB 3.1 完全兼容。这些设置使得 USB 3.1 第 1 代路径中的 TUSB522P 能够达到最佳性能，并延长信号传输距离以及实现灵活安置。

器件信息

器件型号	温度	封装(1)
TUSB522P	TA = 0°C 至 70°C	RGE（VQFN，24）
TUSB522PI	TA = -40°C 至 85°C

(1) 如需了解所有可用封装，请参阅数据表末尾的可订购产品附录。

简化版原理图

4 Revision History

Changes from Revision D (May 2019) to Revision E (November 2023)

• 更新了整个文档中的表格、图和交叉参考的编号格式Go
• 更新了器件信息 表以包含环境温度Go
• In the Pin Functions table deleted "Note: When OS = low." for both DE1 and DE2. Go
• In Recommended Operation Conditions, changed C_AC-USB1 max from 200 nF to 265 nF.Go
• Reformat Table 7-1 for readability.Go
• Updated Figure 8-1 to include C_AC-USB1, C_AC-USB2, L_AB, L_CD, L_AC-CAP, L_ESD, R_ESD, and R_RX, Go
• Added comment that ac-capacitor should be placed between ESD and USB receptacle when designing for short to VBUS protection.Go
• Updated the Design Parameters table to include pre-channel and post-channel min/max limitsGo
• Added the ESD Protection sectionGo

5 Pin Configuration and Functions

Figure 5-1 RGE Package, 24-Pin (VQFN) (Top View)

Table 5-1 Pin Functions

PIN		I/O	DESCRIPTION
NAME	NO.
RX1N	8	Differential I	Differential input for 5Gbps negative signal on Channel 1
RX1P	9	Differential I	Differential input for 5Gbps positive signal on Channel 1
TX1N	23	Differential O	Differential output for 5Gbps negative signal on Channel 1
TX1P	22	Differential O	Differential output for 5Gbps positive signal on Channel 1
RX2N	20	Differential I	Differential input for 5Gbps negative signal on Channel 2
RX2P	19	Differential I	Differential input for 5Gbps positive signal on Channel 2
TX2N	11	Differential O	Differential output for 5Gbps negative signal on Channel 2
TX2P	12	Differential O	Differential output for 5Gbps positive signal on Channel 2
EQ1	2	I, CMOS	Sets the receiver equalizer gain for Channel 1. 3-state input with integrated pull-up and pull-down resistors. EQ1 = Low = 3 dB EQ1 = Mid = 6 dB EQ1 = High = 9 dB
DE1	16	I, CMOS	Sets the output de-emphasis for Channel 1. 3-state input with integrated pull-up and pull-down resistors. DE1 = Low = 0 dB DE1 = Mid = -3.5 dB DE1 = High = -6.2 dB
OS1	15	I, CMOS	Sets the output swing (differential voltage amplitude) for Channel 1. 2-state input with an integrated pull down resistor. OS1 = Low = 0.9 mV OS1 = High = 1.1 mV
EQ2	17	I, CMOS	Sets the receiver equalizer gain for Channel 2. 3-state input with integrated pull-up and pull-down resistors. EQ2 = Low = 3 dB EQ2 = Mid = 6 dB EQ2 = High = 9 dB
DE2	3	I, CMOS	Sets the output de-emphasis for Channel 2. 3-state input with integrated pull-up and pull-down resistors. DE2 = Low = 0 dB DE2 = Mid = -3.5 dB DE2 = High = -6.2 dB
OS2	4	I, CMOS	Sets the output swing (differential voltage amplitude) for Channel 2. 2-state input with an integrated pull down resistor. OS2 = Low = 0.9 mV OS2 = High = 1.1 mV
EN_RXD	5	I, CMOS	Enable. The device has a 660-kΩ pulldown resistor. Device is active when EN_RXD = High. Drive actively high or install a pullup resistor (recommend 4.7 KΩ) for normal operation. Does reset state machine.
RSV	14	I, CMOS	Reserved. Can be left as no-connect.
VCC	1, 13	P	Positive power supply. Power supply is 3.3 V.
GND	10, 21, PAD	G	Ground. PAD must be connected to Ground. Pins 10, 21 can be connected to Ground or left unconnected.
NC	6, 7, 18, 24	—	No connection. These pins can be tied to any desired voltages including connecting them to GND.

6 Specifications

6.1 Absolute Maximum Ratings