TI DS90UB927Q-Q1: FPD-Link III 24-bit RGB Display Serializer for 720p Automotive Applications

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TI-DS90UB927Q-Q1是一款专为FPD-Link串行器设计的高性能芯片，它在汽车显示屏和图像传感应用领域中发挥着关键作用。该器件具有双向控制通道接口，支持I2C兼容的串行通信，可以与DS90UB928Q-Q1解串器或DS90UB926Q-Q1配合使用，构建完整的数据传输链路。这款设备的特点包括： 1. **高速接口**：DS90UB927Q-Q1提供了两个双向控制通道，用于连接到I2C兼容的串行总线，支持高达5MHz至85MHz的像素时钟（PCLK），确保了高清视频（如720p）的高速并行传输，满足高清晰度车载视频显示系统的需要。 2. **EMI抑制**：为了降低电磁干扰（EMI），该串行器优化了信号处理，确保视频输入信号的质量，对于对电磁兼容性有严格要求的应用至关重要。 3. **色彩深度支持**：支持24位彩色深度，采用RGB888+VS、HS、DE等格式，提供丰富的色彩表现，适用于高质量的图像和视频输出。 4. **多功能接口**：除了视频传输，还包含I2S接口，用于音频数据传输，以及SDA、SCL和MCLK等接口，满足多种应用需求。 5. **模式选择与控制**：通过MODE_SEL、LFMODE、MAPSEL等控制寄存器，用户可以根据具体应用调整工作模式，如低功耗模式（LFMODE）、数据映射选择（MAPSEL）等。 6. **电源选项**：VDDIO供电电压支持1.8V或3.3V，适应不同电源环境。 7. **同步信号接口**：包括RxIN1+/-、RxCLKIN+/-等接收输入和输出信号，以及TxOUT1+/-、TxCLKOUT+/-等发送端口，用于精确的数据同步。 8. **接口兼容性**：与DS90UB926Q-Q1和DS90UB928Q-Q1的协同工作，确保了系统间的无缝连接。 9. **功能锁定和中断管理**：通过LOCK、PASS、PDB、INTB等引脚，实现信号锁定和中断管理，提高系统的稳定性和可靠性。 10. **产品资源**：提供产品目录、样例代码、购买途径，以及全面的技术文档、工具软件、支持服务和社区资源，方便用户获取和使用。 TI-DS90UB927Q-Q1是一款专为FPD-Link接口设计的高性能串行器，集成了多种接口和控制功能，广泛应用于汽车电子、图形处理器等领域的视频和音频数据传输，是构建高性能显示系统的理想选择。

DS90UB927Q-Q1

ZHCSDA3D –JUNE 2012–REVISED JANUARY 2015

www.ti.com.cn

AC Electrical Characteristics (continued)

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

(1)(2)(3)

PARAMETER TEST CONDITIONS PIN / FREQ MIN TYP MAX UNIT

DC AND AC SERIAL CONTROL BUS CHARACTERISTICS

SDA RiseTime – READ 430 ns

SDA, RPU = 10 kΩ, Cb ≤ 400

pF, Figure 9

SDA Fall Time – READ 20 ns

6.7 Electrical Characteristics: DC and AC Serial Control Bus

Over 3.3-V supply and temperature ranges unless otherwise specified.

(1)(2)(3)

PARAMETER TEST CONDITIONS MIN TYP MAX UNIT

Input High Level SDA and SCL 0.7*V

DDIO

DD33

Input Low Level Voltage SDA and SCL GND 0.3*V

DD33

Input Hysteresis >50 mV

SDA or SCL, IOL = 1.25 mA 0 0.36 V

SDA or SCL, Vin = V

DDIO

or GND -10 +10 µA

Input Capacitance SDA or SCL <5 pF

(1) The Electrical Characteristics tables list verified specifications under the listed Recommended Operating Conditions except as otherwise

modified or specified by the Electrical Characteristics conditions and/or notes. Typical specifications are estimations only and are not

verified.

(2) Typical values represent most likely parametric norms at V

DD33

= 3.3 V, V

DDIO

= 1.8 V or 3.3 V, T

= 25°C, and at the Recommended

Operating Conditions at the time of product characterization and are not verified.

(3) Current into device pins is defined as positive. Current out of a device pin is defined as negative. Voltages are referenced to ground

except V

and ΔV

, which are differential voltages. Supply noise testing was done with minimum capacitors on the PCB. A sinusoidal

signal is AC coupled to the supply pins with amplitude = 100 mVp-p measured at the device V

DD33

and V

DDIO

pins. Bit error rate testing

of input to the serializer and output of the deserializer with 10 meter cable shows no error when the noise frequency is less than 50

MHz.

VCM

GND

RxIN[3:0]+

RxCLKIN+

RxIN[3:0]-

RxClkIN-

VTH

VTL

-V

DS90UB927Q-Q1

www.ti.com.cn

ZHCSDA3D –JUNE 2012–REVISED JANUARY 2015

6.8 Timing Requirements for the Serial Control Bus

Over 3.3-V supply and temperature ranges unless otherwise specified.

(1)(2)(3)

MIN NOM MAX UNIT

Standard Mode 0 100

SCL

SCL Clock Frequency kHz

Fast Mode 0 400

Standard Mode 4.7

LOW

SCL Low Period µs

Fast Mode 1.3

Standard Mode 4.0

HIGH

SCL High Period µs

Fast Mode 0.6

Hold time for a start or Standard Mode 4.0

HD;STA

a repeated start µs

Fast Mode 0.6

condition (Figure 9)

Set Up time for a start Standard Mode 4.7

SU:STA

or a repeated start µs

Fast Mode 0.6

condition (Figure 9)

Standard Mode 0 3.45

Data Hold Time

HD;DAT

µs

(Figure 9)

Fast Mode 0 0.9

Standard Mode 250

Data Set Up Time

SU;DAT

(Figure 9)

Fast Mode 100

Set Up Time for Standard Mode 4.0

SU;STO

STOP Condition µs

Fast Mode 0.6

(Figure 9)

Bus Free Time Standard Mode 4.7

BUF

Between STOP and µs

Fast Mode 1.3

START (Figure 9)

Standard Mode 1000

SCL & SDA Rise

Time, (Figure 9)

Fast Mode 300

Standard Mode 300

SCL & SDA Fall Time,

(Figure 9)

Fast mode 300

(1) The Electrical Characteristics tables list verified specifications under the listed Recommended Operating Conditions except as otherwise

modified or specified by the Electrical Characteristics conditions and/or notes. Typical specifications are estimations only and are not

verified.

(2) Typical values represent most likely parametric norms at V

DD33

= 3.3 V, V

DDIO

= 1.8 V or 3.3 V, T

= 25°C, and at the Recommended

Operating Conditions at the time of product characterization and are not verified.

(3) Current into device pins is defined as positive. Current out of a device pin is defined as negative. Voltages are referenced to ground

except V

and ΔV

, which are differential voltages. Supply noise testing was done with minimum capacitors on the PCB. A sinusoidal

signal is AC coupled to the supply pins with amplitude = 100 mVp-p measured at the device V

DD33

and V

DDIO

pins. Bit error rate testing

of input to the serializer and output of the deserializer with 10 meter cable shows no error when the noise frequency is less than 50

MHz.

6.9 Timing Requirements - DC and AC Serial Control Bus Characteristics

MIN TYP MAX UNIT

SU;DAT

Set Up Time – READ (Figure 9) 560 ns

HD;DAT

Hold Up Time – READ (Figure 9) 615 ns

Input Filter 50 ns

Figure 1. FPD-Link DC V

Definition

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