DS90UB988-Q1: FPD-LINK III模式下无输出

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Part Number: DS90UB988-Q1
Other Parts Discussed in Thread: USB2ANY

在加串器为DS90UB947 解串器为DS90UB988情况下，目前可以测量到DS90UB988-OLDI的输出,但是屏幕的显示不正常，屏幕显示如下：

此时读取寄存器0X53值为：0x02，寄存器0X54的值为：0x91，此时屏幕通道0以及通道1均已使能输出，OLDI的PLL也已经配置完成.

3 个月前

0 Taylor 2 个月前

TI__Genius 12605 points

能运行DTG调试脚本几次吗？这样我们就可以了解再现的DTG时序是什么？

能否同时提供带有面板所有消隐值的视频时序，以及面板tolerance？

最后，你能提供988脚本吗？

988需要仔细编程OLDI PLL，并进行轻微的Hblank调整以匹配输入/输出PCLK；这两种情况都可能是根本原因，但上述信息将有助于隔离。

0 ? ?? 2 个月前

Prodigy 70 points

你好我的USB2ANY设备坏了我是直接通过串口写脚本去实现输出的，目前屏幕已经可以正常显示，但是存在的问题是屏幕显示有些许问题,屏幕边缘图像感觉有锯齿不平滑
图像如下：

PLL配置代码如下：

from smbus2 import SMBus

import struct

bus_number = 3

bus = SMBus(bus_number)

#UB947 = int(input("请输入编码器设备地址1: "), 0)

UB988 = int(input("请输入编码器设备地址2: "), 0)

bus.write_byte_data(UB988,0x04,0xC8, force=True)

### 在对DTG寄存器进行编程时，应将DTG模块保持在复位状态,最后再释放

## Hold Des DTG in reset

## *********************************************

bus.write_byte_data(UB988,0x40,0x50, force=True) #Select DTG Page

bus.write_byte_data(UB988,0x41,0x32, force=True)

bus.write_byte_data(UB988,0x42,0x6, force=True) #Hold Port 0 DTG in reset

bus.write_byte_data(UB988,0x41,0x62, force=True)

bus.write_byte_data(UB988,0x42,0x6, force=True) #Hold Port 1 DTG in reset

##### port0 PG-stting

bus.write_byte_data(UB988,0x40,0x50, force=True)

bus.write_byte_data(UB988,0x41,0x20, force=True)

bus.write_byte_data(UB988,0x42,0x5F, force=True)### P0 同步极性以及 pixel format setting/1.16

####水平后沿-P0-Hstart

bus.write_byte_data(UB988,0x40,0x50, force=True)

bus.write_byte_data(UB988,0x41,0x29, force=True)

bus.write_byte_data(UB988,0x42,0x40, force=True)

bus.write_byte_data(UB988,0x41,0x2A, force=True)

bus.write_byte_data(UB988,0x42,0x82, force=True)

####垂直后沿-P0

####总水平帧大小-P0

####总垂直帧大小-P0

####活动水平帧大小-P0

####活动垂直帧大小-P0

####水平同步宽度-P0

####垂直同步宽度-P0

bus.write_byte_data(UB988,0x40,0x50, force=True)

bus.write_byte_data(UB988,0x41,0x2F, force=True)

bus.write_byte_data(UB988,0x42,0x40, force=True)

bus.write_byte_data(UB988,0x41,0x30, force=True)

bus.write_byte_data(UB988,0x42,0x2a, force=True)

##### port1 PG-stting

bus.write_byte_data(UB988,0x40,0x50, force=True)

bus.write_byte_data(UB988,0x41,0x50, force=True)

bus.write_byte_data(UB988,0x42,0x5F, force=True)### P1 同步极性以及 pixel format setting

####水平后沿-P1-Hstart

bus.write_byte_data(UB988,0x40,0x50, force=True)

bus.write_byte_data(UB988,0x41,0x59, force=True)

bus.write_byte_data(UB988,0x42,0x40, force=True)

bus.write_byte_data(UB988,0x41,0x5A, force=True)

bus.write_byte_data(UB988,0x42,0x82, force=True)

####垂直后沿-P1

####总水平帧大小-P1

####总垂直帧大小-P1

####活动水平帧大小-P1

####活动垂直帧大小-P1

####水平同步宽度-P1

bus.write_byte_data(UB988,0x40,0x50, force=True)

bus.write_byte_data(UB988,0x41,0x5F, force=True)

bus.write_byte_data(UB988,0x42,0x40, force=True)

bus.write_byte_data(UB988,0x41,0x60, force=True)

bus.write_byte_data(UB988,0x42,0x29, force=True)

####垂直同步宽度-P1

## *********************************************

## Release Des DTG reset

## *********************************************

bus.write_byte_data(UB988,0x40,0x50, force=True) #Select DTG Page

bus.write_byte_data(UB988,0x41,0x32, force=True)

bus.write_byte_data(UB988,0x42,0x4, force=True) #Release Port 0 DTG

bus.write_byte_data(UB988,0x41,0x62, force=True)

bus.write_byte_data(UB988,0x42,0x4, force=True) #Release Port 1 DTG

# N-Divder P-Divder设置

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x18,force=True)

bus.write_byte_data(UB988,0x42,0x24,force=True)# N 36

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x2D,force=True)

bus.write_byte_data(UB988,0x42,0x01,force=True)# P 2

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x08,force=True)

bus.write_byte_data(UB988,0x42,0xF6,force=True)# PLL NUM

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x09,force=True)

bus.write_byte_data(UB988,0x42,0xFF,force=True)# PLL NUM

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x0A,force=True)

bus.write_byte_data(UB988,0x42,0xFF,force=True)# PLL NUM

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x0B,force=True)

bus.write_byte_data(UB988,0x42,0xF6,force=True)# PLL DENO

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x0C,force=True)

bus.write_byte_data(UB988,0x42,0xFF,force=True)# PLL DENO

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x0D,force=True)

bus.write_byte_data(UB988,0x42,0xFF,force=True)# PLL DENO

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x38,force=True)

bus.write_byte_data(UB988,0x42,0x20,force=True)# MASH SETTING

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x0E,force=True)

bus.write_byte_data(UB988,0x42,0x80,force=True)# SSCG -Enable

'''

bus.write_byte_data(UB988,0x01,0x40,force=True)# reset

#bus.write_byte_data(UB988,0x04,0xc8,force=True)# I2C_Correspond_set

'''

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x20,force=True)

bus.write_byte_data(UB988,0x42,0x80,force=True)# cho_enable

bus.write_byte_data(UB988,0x40,0x2C,force=True)

bus.write_byte_data(UB988,0x41,0x22,force=True)

bus.write_byte_data(UB988,0x42,0x80,force=True)# ch1_enable

#bus.write_byte_data(UB947,0x65,0x08,force=True)# 947 pattern choice

#bus.write_byte_data(UB947,0x64,0x31,force=True)# 947 pattern output

0 ? ?? 2 个月前回复 ? ??

Prodigy 70 points

输出图像如下：

0 Taylor 2 个月前回复 ? ??

TI__Genius 12605 points

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DS90UB988-Q1: FPD-LINK III模式下无输出