SNLS543 August 2018 DS90UH949A-Q1
PRODUCTION DATA.
In normal operation, GPIO[3:0] may be used as general-purpose I/Os in either forward channel (outputs) or back channel (inputs) mode. GPIO and D_GPIO modes may be configured from the registers. The same registers configure either GPIO or D_GPIO, depending on the status of PORT1_SEL and PORT0_SEL bits (0x1E[1:0]). D_GPIO operation requires 2-lane FPD-Link III mode. See Table 1 for GPIO enable and configuration.
DESCRIPTION | DEVICE | FORWARD CHANNEL | BACK CHANNEL |
---|---|---|---|
GPIO3 / D_GPIO3 | Serializer | 0x0F[3:0] = 0x3 | 0x0F[3:0] = 0x5 |
Deserializer | 0x1F[3:0] = 0x5 | 0x1F[3:0] = 0x3 | |
GPIO2 / D_GPIO2 | Serializer | 0x0E[7:4] = 0x3 | 0x0E[7:4] = 0x5 |
Deserializer | 0x1E[7:4] = 0x5 | 0x1E[7:4] = 0x3 | |
GPIO1 / D_GPIO1 | Serializer | 0x0E[3:0] = 0x3 | 0x0E[3:0] = 0x5 |
Deserializer | 0x1E[3:0] = 0x5 | 0x1E[3:0] = 0x3 | |
GPIO0 / D_GPIO0 | Serializer | 0x0D[3:0] = 0x3 | 0x0D[3:0] = 0x5 |
Deserializer | 0x1D[3:0] = 0x5 | 0x1D[3:0] = 0x3 |