JAJSH34 March 2019 DS90UB940N-Q1
PRODUCTION DATA.
The GPIO_REG[8:5] are register-only GPIOs and may be either programmed as outputs or read as inputs through local register bits only. Where applicable, these bits are shared with I2S pins and will override I2S input if enabled in GPIO_REG mode. See Table 4 for GPIO enable and configuration.
NOTE
Local GPIO value may be configured and read either through local register access or remote register access through the low-speed bidirectional control channel. Configuration and state of these pins are not transported from serializer to deserializer as is the case for GPIO[3:0].
DESCRIPTION | REGISTER CONFIGURATION | FUNCTION |
---|---|---|
GPIO9 | 0x1A[3:0] = 0x1 | Output, L |
0x1A[3:0] = 0x9 | Output, H | |
0x1A[3:0] = 0x3 | Input, Read: 0x6F[1] | |
GPIO_REG8 | 0x21[7:4] = 0x1 | Output, L |
0x21[7:4] = 0x9 | Output, H | |
0x21[7:4] = 0x3 | Input, Read: 0x6F[0] | |
GPIO_REG7 | 0x21[3:0] = 0x1 | Output, L |
0x21[3:0] = 0x9 | Output, H | |
0x21[3:0] = 0x3 | Input, Read: 0x6E[7] | |
GPIO_REG6 | 0x20[7:4] = 0x1 | Output, L |
0x20[7:4] = 0x9 | Output, H | |
0x20[7:4] = 0x3 | Input, Read: 0x6E[6] | |
GPIO_REG5 | 0x20[3:0] = 0x1 | Output, L |
0x20[3:0] = 0x9 | Output, H | |
0x20[3:0] = 0x3 | Input, Read: 0x6E[5] | |
GPIO3 | 0x1F[3:0] = 0x1 | Output, L |
0x1F[3:0] = 0x9 | Output, H | |
0x1F[3:0] = 0x3 | Input, Read: 0x6E[3] | |
GPIO2 | 0x1E[7:4] = 0x1 | Output, L |
0x1E[7:4] = 0x9 | Output, H | |
0x1E[7:4] = 0x3 | Input, Read: 0x6E[2] | |
GPIO1 | 0x1E[3:0] = 0x1 | Output, L |
0x1E[3:0] = 0x9 | Output, H | |
0x1E[3:0] = 0x3 | Input, Read: 0x6E[1] | |
GPIO0 | 0x1D[3:0] = 0x1 | Output, L |
0x1D[3:0] = 0x9 | Output, H | |
0x1D[3:0] = 0x3 | Input, Read: 0x6E[0] |