SNLS457B November 2014 – August 2019 DS90UB929-Q1
PRODUCTION DATA.
In normal operation, GPIO[3:0] may be used as general-purpose IOs in either forward channel (outputs) or back channel (inputs) mode. GPIO modes may be configured from the registers. See Table 1 for GPIO enable and configuration.
DESCRIPTION | DEVICE | FORWARD CHANNEL | BACK CHANNEL |
---|---|---|---|
GPIO3 | Serializer | 0x0F[3:0] = 0x3 | 0x0F[3:0] = 0x5 |
Deserializer | 0x1F[3:0] = 0x5 | 0x1F[3:0] = 0x3 | |
GPIO2 | Serializer | 0x0E[7:4] = 0x3 | 0x0E[7:4] = 0x5 |
Deserializer | 0x1E[7:4] = 0x5 | 0x1E[7:4] = 0x3 | |
GPIO1 | Serializer | 0x0E[3:0] = 0x3 | 0x0E[3:0] = 0x5 |
Deserializer | 0x1E[3:0] = 0x5 | 0x1E[3:0] = 0x3 | |
GPIO0 | Serializer | 0x0D[3:0] = 0x3 | 0x0D[3:0] = 0x5 |
Deserializer | 0x1D[3:0] = 0x5 | 0x1D[3:0] = 0x3 |