Table of Contents
Advertisement
www.ti.com
4.2
Configuring the Control Pins
The LMK03318 has multiple external control pins to configure the operating mode and initial settings on
POR (see
Section
level, or 8-level input scheme to increase the amount of control with a limited number of pins.
The LMK03318 control pins can be configured through the jumpers and switches shown in
Jumpers JP17 through JP24 can be used to configure the corresponding control pin to either high or low
state by strapping the center pin to "HI" position (tie pins 1-2) or "LO" position (tie pins 2-3), respectively.
Jumpers JP17, JP20, JP21, and JP22 can be used to configure the control pin with 3-level input scheme,
where V
< 0.4V, V
LO
the control pin to a mid-level state of 0.9 V, when the jumper is left open ("MID" position).
The LMK03318 control pins perform different functions depending on the mode of operation.
•
For Soft Pin Modes or Register Default Mode, refer to
•
For Hard Pin Modes, refer to
in
Table
3.
SNAU186 – November 2015
Submit Documentation Feedback
3). Depending on the selected mode, some control pins will change between 2-level, 3-
Figure 4. Control Pin Interfaces (Default Jumper Settings)
~ 0.9V, V
> 1.4V. Each of these 4 jumpers use a resistor divider network to bias
MID
HI
Table
4. Jumpers not listed in
Copyright © 2015, Texas Instruments Incorporated
Table 3
for jumper and switch descriptions.
Table 4
have identical functions described
LMK03318EVM User's Guide
Configuring the EVM
Figure
4.
11
Advertisement
Table of Contents
