TI-TUSB1142 USB Type-C 10Gbps 2:1 Mux/DeMux Redriver技术规格

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"TI-TUSB1142是一款专为USB Type-C应用设计的10Gbps USB3.2线性重驱动器，具备1:2解复用或2:1复用功能。该器件旨在主机与USB-C插座之间或USB设备与USB-C插座之间使用，支持USB3.2 Gen2（10Gbps）和Gen1（5Gbps）以及低功耗状态。" TI-TUSB1142是德州仪器（Texas Instruments）推出的一款高性能USB Type-C接口的多用途芯片，主要用于提升高速数据传输的稳定性和信号质量。该器件的关键特性包括： 1. **USB Type-C 2:1 Redriver MUX**：TI-TUSB1142支持USB Type-C规范，提供2:1复用功能，允许一个USB Type-C端口连接到两个不同的设备，或反之，实现灵活的系统配置。 2. **USB3.2 5Gbps和10Gbps支持**：兼容USB3.2 Gen2和Gen1标准，最高可支持10Gbps的数据传输速率，确保高速数据传输的顺畅。 3. **高级USB电源管理**：具有三种工作模式：主动模式（Active，典型功耗550mW）、断开连接模式（Disconnect，功耗1.5mW）和禁用模式（Disabled，EN=L，功耗0.130mW），实现高效能与低功耗的平衡。 4. **均衡设置**：提供16种均衡设置，最高可达12dB增益，在5GHz频率下，确保信号在不同线缆长度和环境条件下的清晰度。 5. **自适应或固定接收均衡**：针对面向USB连接器的端口，可以选择自适应或固定接收均衡，以适应不同环境和连接条件。 6. **线性或有限重驱动选择**：对于面向系统的SSRX发射器端口，可以选择线性或有限重驱动模式，优化系统性能。 7. **低电压VTX-CM和VRX-CM**：电压差分信号的共模电压小于1V，降低噪声影响，提高信号完整性。 8. **I2C或引脚配置**：通过I2C接口或引脚strap进行配置，便于系统集成和控制。 9. **I2C电压等级选择**：支持1.8V或3.3V的I2C电压等级，适应不同系统需求。 10. **单一3.3V供电**：器件只需单一3.3V电源供电，简化电源管理并降低系统复杂性。 TI-TUSB1142适用于多种应用场景，如笔记本电脑、台式机、扩展坞、数据存储设备、外接周边设备和打印机等。它不仅增强了USB Type-C接口的信号质量和可靠性，还提供了高效能和低功耗的解决方案，是现代高速数据传输设备的理想选择。

5.7 USB Electrical Characteristics

over operating free-air temperature and voltage range (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

USB Gen 2 Differential Receiver (CRX1p/n, CRX2p/n, SSTX)

(RX-DIFF-PP)

Input differential peak-peak voltage

swing linear dynamic range

AC-coupled differential peak-to-peak

signal measured post CTLE through a

reference channel

1200 mVpp

(RX-DC-CM)

Common-mode voltage bias in the

receiver (DC)

0 V

RX_CM-INST

Max Instantaneous RX DC common

mode voltage change under all

operating conditions (OFF to ON,

Disabled to USB, etc…)

Measured at non-device side of AC

coupling capacitor with 200-kΩ load.

-300 500 mV

(RX-DIFF-DC)

Differential input impedance (DC) Present after a GEN2 device is detected. 72 90 120 Ω

(RX-CM-DC)

Receiver DC common mode

impedance

Present after a GEN2 device is detected. 18 30 Ω

(RX-HIGH-IMP-DC-POS)

Common-mode input impedance with

termination disabled (DC)

Present when no GEN2 device is detected

on transmitter.

Measured over the range of 0 – 500 mV

with respect to GND.

25 kΩ

(SIGNAL-DET-DIFF-PP)

Input differential peak-to-peak signal

detect assert level

At 10 Gbps, no input loss, PRBS7 pattern 75 mV

(RX-IDLE-DET-DIFF-PP)

Input differential peak-to-peak signal

detect de-assert Level

At 10 Gbps, no input loss, PRBS7 pattern 55 mV

(RX-LFPS-DET-DIFF-PP)

Low frequency periodic signaling

(LFPS) detect threshold

Below the minimum is squelched 100 300 mV

(RX-CM-AC-P)

Peak RX AC common-mode voltage Measured at package pin 150 mV

(RX)

RX input capacitance to GND At 5 GHz; 1 pF

L(RX-DIFF)

Differential return Loss

50 MHz – 1.25 GHz at 85 Ω; -22 dB

5 GHz at 85 Ω; -20 dB

L(RX-CM)

Common-mode return loss 50 MHz – 5 GHz at 85 Ω; -12 dB

Q_SSTX15

SSTX->CTX1 Receiver equalization at

5 GHz

SSEQ1_SEL = 15; Gain at 5 GHz minus

Gain at 10 MHz;

13.6 dB

Q_RX15

CRX1 -> SSRX Receiver equalization

at 5 GHz

CEQ1_SEL = 15; Gain at 5 GHz minus

Gain at 10 MHz;

12.7 dB

AC-USB1

Required external AC capacitor on

SSTX

75 265 nF

AC-USB2

Optional external AC capacitor on

CRX1 and CRX2.

297 363 nF

USB Gen 2 Differential Transmitter (CTX1p/n, CTX2p/n, SSRX)

TX(DIFF-PP)

Transmitter dynamic differential

voltage swing range.

EQ15; VID = 1Vpp; LINR_L3 1200 mVpp

TX(RCV-DETECT)

Amount of voltage change allowed

during receiver detection

600 mV

TX-CM-INST-ONOFF

Max Instantaneous TX DC common

mode voltage change under operating

condition: OFF to ON, ON to OFF,

during Rx.Detect; Disconnect to U0,

U2/U3 to Disconnect.

Measured single-ended at non-device side

of AC coupling capacitor with 200-kΩ

load.

-500 800 mV

TX(CM-IDLE-DELTA)

Transmitter idle common-mode

voltage change while in U2/U3 and not

actively transmitting LFPS

–300 600 mV

TX(DC-CM)

Common-mode voltage bias in the

transmitter (DC)

0.5 0.76 1 V

TX(CM-AC-PP-ACTIVE)

Tx AC common-mode voltage active

Max mismatch from Txp + Txn for both

time and amplitude

100 mVpp

TX(IDLE-DIFF-AC-PP)

AC electrical idle differential peak-to-

peak output voltage

At package pins 0 10 mV

TX(CM-DC-ACTIVE-

IDLE-DELTA)

Absolute DC common-mode voltage

between U1 and U0

At package pin 200 mV

TX(DIFF)

Differential impedance of the driver 80 90 120 Ω

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TUSB1142

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5.7 USB Electrical Characteristics (continued)

over operating free-air temperature and voltage range (unless otherwise noted)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

TX(CM)

Common-mode impedance of the

driver

Measured with respect to AC ground over

0–500 mV

18 30 Ω

SSRX-LIMITED-VODL0

SSRX differential peak-to-peak

voltage when configured for limited

redriver and LINR_L0

TX_PRESHOOT_EN = 0;

TX_DEEMPHASIS_EN = 0;

750 mVpp

SSRX-LIMITED-VODL1

SSRX differential peak-to-peak

voltage when configured for limited

redriver and LINR_L1

TX_PRESHOOT_EN = 0;

TX_DEEMPHASIS_EN = 0;

900 mVpp

SSRX-LIMITED-VODL2

SSRX differential peak-to-peak

voltage when configured for limited

redriver and LINR_L2

TX_PRESHOOT_EN = 0;

TX_DEEMPHASIS_EN = 0;

1000 mVpp

SSRX-LIMITED-VODL3

SSRX differential peak-to-peak

voltage when configured for limited

redriver and LINR_L3

TX_PRESHOOT_EN = 0;

TX_DEEMPHASIS_EN = 0;

1100 mVpp

SSRX-DE-RATIO0

SSRX de-emphasis when configured

for limited redriver and de-emphasis

enabled.

TX_PRESHOOT_EN = 0;

TX_DEEMPHASIS_EN = 1;

TX_DEEPHASIS = 2'b00;

USB_SSRX_VOD = 2'b00 (LINR_L3);

Refer to Figure 6-7

-1.8 dB

SSRX-DE-RATIO1

SSRX de-emphasis when configured

for limited redriver and de-emphasis

enabled.

TX_PRESHOOT_EN = 0;

TX_DEEMPHASIS_EN =

1; TX_DEEPHASIS =

2'b01; USB_SSRX_VOD = 2'b00

(LINR_L3); Refer to Figure 6-7

-2.1 dB

SSRX-DE-RATIO2

SSRX de-emphasis when configured

for limited redriver and de-emphasis

enabled.

TX_PRESHOOT_EN = 0;

TX_DEEMPHASIS_EN =

1; TX_DEEPHASIS =

2'b10; USB_SSRX_VOD = 2'b00

(LINR_L3); Refer to Figure 6-7

-3.2 dB

SSRX-DE-RATIO3

SSRX de-emphasis when configured

for limited redriver and de-emphasis

enabled.

TX_PRESHOOT_EN = 0;

TX_DEEMPHASIS_EN =

1; TX_DEEPHASIS =

2'b11; USB_SSRX_VOD = 2'b00

(LINR_L3); Refer to Figure 6-7

-3.8 dB

SSRX-PRESH-RATIO0

SSRX pre-shoot level when configured

for limited redriver and pre-shoot

enabled.

TX_PRESHOOT_EN = 1;

TX_DEEMPHASIS_EN =

0; TX_PRESHOOT =

2'b00; USB_SSRX_VOD = 2'b00

(LINR_L3); Refer to Figure 6-6

1.6 dB

SSRX-PRESH-RATIO1

SSRX pre-shoot level when configured

for limited redriver and pre-shoot

enabled.

TX_PRESHOOT_EN = 1;

TX_DEEMPHASIS_EN =

0; TX_PRESHOOT =

2'b01; USB_SSRX_VOD = 2'b00

(LINR_L3); Refer to Figure 6-6

2.1 dB

SSRX-PRESH-RATIO2

SSRX pre-shoot level when configured

for limited redriver and pre-shoot

enabled.

TX_PRESHOOT_EN = 1;

TX_DEEMPHASIS_EN =

0; TX_PRESHOOT =

2'b10; USB_SSRX_VOD = 2'b00

(LINR_L3); Refer to Figure 6-6

2.5 dB

SSRX-PRESH-RATIO3

SSRX pre-shoot level when configured

for limited redriver and pre-shoot

enabled.

TX_PRESHOOT_EN = 1;

TX_DEEMPHASIS_EN =

0; TX_PRESHOOT =

2'b11; USB_SSRX_VOD = 2'b00

(LINR_L3); Refer to Figure 6-6

3.0 dB

TX(SHORT)

TX short circuit current TX± shorted to GND 60 mA

TX(PARASITIC)

TX input capacitance for return loss At package pins, at 5 GHz 1.25 pF

LTX(DIFF)

Differential return loss 50 MHz – 1.25 GHz at 85 Ω -28 dB

LTX(CM)

Common-mode return loss 50 MHz – 5 GHz at 85 Ω -12 dB

TX-AC(COUPLING)

External required AC coupling

capacitor

75 265 nF

AC Characteristics

Crosstalk_CRXTX

Differential crosstalk between CTX1/2

and CRX1/2 signal pairs

85 Ω; At 5 GHz; SSEQ[1:0] = 0; CEQ[1:0]

= 0;

-40 dB

TUSB1142

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