1. Description(概述)
S.EDP-LVDS.V1.2是一款信号转接板,主要是用于将EDP信号转换成LVDS信号,最大分辨率可支持到1920*1200。产品可应用于显示器、工控PC、安卓一体机、广告机、桌面系统等领域,EDP输入需要符合EDP/DP v1.2a 或v1.1a规范;EDP分辨率输入支持强制输入模式和EDID配置模式。
①强制输入模式:主板端EDP OUT强制输出分辨率,转接板转换出对应的LVDS分辨率
②EDID配置模式:转接板内置EDID, 主板通过EDP读取转接板内部EDID分辨率,主板EDP输出EDID分辨率,转接板转换对应LVDS分辨率(要求主板支持自应EDIDl输出分辨率)
2. Features(特性说明)
Features ( EPD/DP RX ):(最大支持2LANE输入)
• Compliant to EDP/DP v1.2a and v1.1a
• Supports Main Link operation with one or two lanes)
• Supports Main Link rate: Reduced Bit Rate (1.62 Gbit/s) and High Bit Rate (2.7 Gbit/s)
• Supports 1 Mbit/s AUX channel
• Supports Native AUX and I2C-over-AUX transactions
• Supports down spreading to minimize EMI
• Integrated 50 W termination resistors provide impedance matching on both Main Link
lanes and AUX channel
• High performance Auto Receive Equalization enabling optimal channel compensation,
device placement flexibility and power saving at CPU/GPU
• Supports Full Link training
Features ( LVDS TX):
• Compatible with ANSI/TIA/EIA-644-A-2001 standard
• Supports RGB data packing as per JEIDA and VESA data formats
• Supports pixel clock frequency from 6 MHz to 112 MHz
• Supports single LVDS bus operation up to 112 mega pixels per second
• S upports dual LVDS bus operation up to 224 mega pixels per second
• Supports color depth options: 18 bpp(6bit), 24 bpp(8bit)
• Programmable center spreading of pixel clock frequency to minimize EMI
• Supports 1920*1200 at 60 Hz resolution in dual LVDS bus mode
• Programmable LVDS signal swing to pre-compensate for channel attenuation or allow
for power saving
3. FUNCTION CONFIGRATION(功能配置)
4. Quickly Application(快速应用)
4.1 按如下实物示意图连接,EDP连接线必须是高速线:
4.2 驱动板EDP输出的驱屏电压需要跟液晶屏的电压一致(默认支持5V及以上的屏,如果液晶屏为3.3V,还需要联系厂家改硬件配置)。
4.3 驱动板EDP输出的分辨率需要跟液晶屏的分辨率一致。
转接板EDP分辨率输入支持强制输入模式和EDID配置模式,需根据驱动板EPD支持的模式来设定。
①强制输入模式:主板端EDP强制输出分辨率,转接板转换出对应的LVDS分辨率
②EDID配置模式:转接板内置EDID, 主板通过EDP读取转接板内部EDID,主板EDP输出对应的EDID分辨率,转接板转换对应LVDS分辨率(前提是主板支持自应EDIDl输出分辨率), 若使用此模式需要联系厂家配置EDID参数。
4.4 配置CN7跳帽。转接板的CN7配置需根据液晶屏参数来设定,说明如下:
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配置 | 跳帽 | 模式 | 说明 |
LVDS BUS | S1不加跳帽 | Daul LVDS BUS | 双通道 |
S1加跳帽 | SINGLE LVDS BUS | 单通道 | |
LVDS DATA FORMAT | S2不加跳帽 | 8BIT-VESA | 8BIT(24bpp)-VESA |
S2加跳帽 | 8BIT-JEIDA | 8BIT(24bpp)-JEIDA | |
删除RS12 | 6BIT VESA OR JEIDA | 6BIT(18bpp) VESA OR JEIDA | |
EDID SELECT (仅在EDID配置模式使用) | S4不加跳帽, S3不加跳帽 | 00:EDID0 | 选用EDID0分辨率 |
S4不加跳帽, S3加跳帽 | 01:EDID1 | 选用EDID1分辨率 | |
S4加跳帽, S3不加跳帽 | 10:EDID2 | 选用EDID2分辨率 | |
S4加跳帽, S3加跳帽 | 11:EDID3 | 选用EDID3分辨率 |