SNAU307A May 2024 – May 2024 LMKDB1204
Table 3-1 describes the default jumper configuration of the EVM to power the device from an external power supply. Configure the EVM as specified in Table 3-1 for initial bring up. The EVM can also be configured to use an on-board 3.3V LDO with USB supply option by changing the position of jumper JP9 as described in Table 3-1.
Category | Reference Designator | Default Position | Description |
---|---|---|---|
Power | J14 | 1-2 | Connect USB or external supply to VDD_IN0 of device. |
J15 | 1-2 | Connect USB or external supply to output bank and digital supply of the chip (VDD). | |
J16 | 1-2 | Connect USB or external supply to VDD_IN1 of device. | |
J17 | 1-2 | Connect USB or external supply to VDD_BANK0 of device. | |
J18 | 1-2 | Connect USB or external supply to VDD_BANK1 of device. | |
J20 | 1-2 | Connect USB or external supply to IO pins on board (VDD_IO). | |
JP9 | 1-2 | Choose between USB or external power supply. Current configuration is for external power. To change to USB power, change jumper position to 2-3. | |
Output enable control pins | JP5 through JP8 | 2-3 | Pull down to GND to enable output (OE#0 through OE#3) with pin control option. |
Digital pins | JP1 | 1-2 | CLKPWRGD_PD# pulled high. |
JP2 | 2-3 | ZOUT_SEL pulled low setting output impedance to 85Ω. | |
JP3 | 2-3 | SMB_EN pin pulled low disabling SMBus. | |
JP4 | 2-3 | CLKIN_SEL_tri pulled low to set CLKIN0 as the input source to all the outputs. |