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DS90UB941AS-Q1: 941接2路948 ,split mode gpio控制问题

Part Number: DS90UB941AS-Q1

Hi Ti supporter,

941、948连接框图如下,941配置为split mode,控制panel 背光使能信号948 gpio 2 3拉高,

发现port0 948 能输出高,port1 948 不能输出高,回读寄存器两路948 寄存器0x1e = 0x90, 0x1f = 0x09 。


941  0x1e,0x01

948  0x1e , 0x90

948  0x1f , 0x09

941  0x1e,0x02

948  0x1e , 0x90

948  0x1f , 0x09

请问split mode下 port1 948 gpio配置有什么需要注意的吗,谢谢。