SNAU298 October 2023
The LMKDB1120EVM can be configured for multiple modes using on board MCU and external power supply options. The following sections describes power, logic, clock input, and output interfaces on the EVM as well as to setup and configure the EVM in those modes.
Some of the key components and their reference designator are noted in
Item No. | Reference Designators | Description | |
---|---|---|---|
1 | U1A | LMKDB1120 | |
2A | J4 | External VDD option through a SMA Port. | |
2B | JP17 | Jumper header to select between external or on-board 3.3 V USB supply option. | |
3 | J2, J3 | SMA Ports for Clock Input (CLKIN_P, CLKIN_N). | |
4 | J8 to J47 | SMA Ports for Clock Outputs (CLKXX_P, CLKXX_N). | |
5 | JP25, JP26 | SADR0_tri and SADR1_tri jumper header option to select different address as defined in Table 3-7. | |
6 | JP22 | SBEN pin header jumper to enable or disable SBI interface during power-up. | |
7 | JP23 | TCA_RESET pin header jumper for Input / Output (IO) Expander. TCA_RESET pin header jumper needs to be connected to pull-up for proper operation. Default configuration is set to pull-up. | |
8 | JP24 | CLKPWRGD_PD# pin header jumper to enable or disable the LMKDB1120. | |
11A | J48 | SBI Connector header jumper for daisy chain option. | |
11B | J49 | SBI_PRIMARY header jumper option to disable the U3A, U3B, U3C, U3D buffer part on the EVM. | |
12 | U2 | USB power option LDO. | |
13 | U3A, U3B, U3C, U3D | Hi-Z buffer part used on SBI lines for daisy chain configuration. | |
14 | U4 | MUX part to choose between MCU and IO expander option on OE#5, OE#6, and OE#10 pins. | |
15 | U5 | IO Expander used for all OE# pin controls. | |
16 | U8 | MSP430F5529IPN MCU. |