SPRUIT0A December 2019 – May 2020
GPIO expander signal mapping is as shown in Table 14.
| Jacinto7 EVM -INFO GPIO Expander | ||||||
|---|---|---|---|---|---|---|
| I2C Bus/Address | GPIO Port | Net Name in INFO Board | Direction WRT CTRL | Default State | Active State | Remarks |
| INFO GPIO Expander - 1 Part# TCA6416ARTWR (AUDIO IO EXPANSION) | ||||||
| I2C3/0x21 | P00 | CODEC_RESETn | Output | PD | Active Low | Used as a Reset signal for Audio Codecs A & B |
| P01 | JAMR3_RESETn | Output | PD | Active Low | Used as a Reset signal for JAMR3 Interface | |
| P02 | JAMR3_PWR_CTRL | Output | NA | Active High | Power EN for JAMR3 Interface | |
| P03 | UB926_RESETn | Output | PD | Active Low | Used as a Reset signal for FPD Audio De-Serializer | |
| P04 | PWR_SW_UB926 | Output | PD | Active High | Used as a Power Enable signal for Audio/FPD connector | |
| P05 | UB926_TUNER_RESET | Output | PD | Active Low | Used as a Reset signal for FPD | |
| P06 | UB926_GPIO_SPARE | Output | NA | NA | SPARE GPIO for FPDLink | |
| P07 | UB926_LOCK | Input | NA | NA | Lock Input from FPDLink | |
| P10 | DIR_RESETn | Output | PD | Active Low | Used as a Reset signal for DIR interface | |
| P11 | DIR_CKSEL | Output | PU | NA | Used for DIR System clock source selection Low: PLL (VCO) clock, High: XTI clock | |
| P12 | DIR_FMT0 | Output | PU | NA | DOUT Audio Data output format - 24-bit, MSB-first, I2S (Default) | |
| P13 | DIR_FMT1 | Output | PU | NA | ||
| P14 | DIR_PSCK0 | Output | PD | NA | System clock of PLL selection | |
| P15 | DIR_PSCK1 | Output | PD | NA | ||
| P16 | AUDEXP_P16 | NA | NA | NA | Reserved GPIO | |
| P17 | McASP6_MUX_SEL | Output | PD | NA | User for Mux selection b/w DIR or FPDLink | |
| INFO GPIO Expander – 2 Part# TCA6416ARTWR ( VIDEO IN/OUT IO EXPANSION) | ||||||
| I2C1/0x21 | P00 | NC | NA | NA | NA | Not used |
| P01 | NC | NA | NA | NA | Not used | |
| P02 | NC | NA | NA | NA | Not used | |
| P03 | NC | NA | NA | NA | Not used | |
| P04 | NC | NA | NA | NA | Not used | |
| P05 | VOUTEXP_P04 | NA | NA | NA | Terminated with Test point | |
| P06 | VOUTEXP_P05 | NA | NA | NA | Terminated with Test point | |
| P07 | NC | NA | NA | NA | Not used | |
| P10 | HDMI_PDn | Output | PD | Active Low | Used as a Power Down signal for HDMI Transmitter | |
| P11 | HDMI_DDC_OE | Output | PD | Active High | Used for HDMI I2C Translator Enable logic | |
| P12 | HDMI_HPD | Input | NA | NA | Used for detection of HDMI cable Hot plug | |
| P13 | UB921_RESETn | Output | PD | Active Low | Used as a Reset signal for FPD III Display Serializer | |
| P14 | PWR_SW_UB921 | Output | PD | Active High | Used as a Power Enable signal for Audio/FPD connector | |
| P15 | UB921_INTB | Input | NA | Active High | FPD III Display Serializer INTB = H, normal
INTB = L, Interrupt request |
|
| P16 | VOUTEXP_P16 | NA | NA | NA | Terminated with Test point | |
| P17 | VOUTEXP_P17 | NA | NA | NA | Terminated with Test point | |
| Info Peripheral | Peripheral IO | Direction
(for SoC) |
Default | Active State | J721E Connectivity |
|---|---|---|---|---|---|
| FPD LINK III Display | Interrupt | Input | PU | Active Low | GPIO0_79 |
| Camera Mux Selection | Enable | Output | NA | ‘0’-OV
‘1’-LI |
GPIO0_78 |
| LI/OV Camera | Trigger | I/O | PD | Active High | GPIO0_31 |
| Reset | Output | PU | Active Low | GPIO0_32 | |
| JAMR3 Interface | JAMR3_GPIO0 | I/O | NA | NA | GPIO0_65 |
| JAMR3_GPIO1 | I/O | NA | NA | GPIO0_66 | |
| JAMR3_GPIO2 | I/O | NA | NA | GPIO0_67 | |
| FPD Link III De-serializer | UB926_GPIO1 | I/O | NA | NA | GPIO0_11 |
| UB926_GPIO2 | I/O | NA | NA | GPIO0_45 | |
| UB926_GPIO3 | I/O | NA | NA | GPIO0_46 | |
| Audio IO Expander | Interrupt | Input | PU | Active Low | GPIO1_23 |
| Video IO Expander | Interrupt | Input | PU | Active Low | GPIO1_24 |
| VIN/VOUT MUX SELECTION | Select0 | Output | PD | SEL [1:0]
‘10’-HDMI ‘11’-CAM ‘01’-FPD |
I2C0 (0x20), P14 |
| Select1 | Output | PU | I2C0 (0x20), P15 |