Datasheet

MAX5392 Evaluation System
Evaluates: MAX5387/MAX5392
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Software Startup
Upon startup, the EV kit software automatical-
ly searches for the USB interface board’s circuit
connection. The EV kit software searches for U3 set 0x58
address and U4 fixed 0x5A address and places the
addresses in U3_MAX5392 and U4_MAX5392 Device
Address combo boxes, respectively. Upon detecting
U4 fixed 0x5A address, U4_MAX5392 Device Address
combo box is disabled. U4_MAX5392 Device Address
combo box remains enabled if the address is not
detected.
The EV kit software continuously polls to find valid
addresses and updates the Devices Found status
indicator. If U1 and U2 are populated on the EV kit,
the user can then navigate to the U1_MAX5387 and
U2_MAX5387 tab sheets and choose the device
addresses according to jumpers JU7, JU8, and JU9
shunt positions, and U2 fixed 0x52 address.
Demo Mode
The EV kit software enters the demo mode—when the
USB connection is not detected or when valid MAX5387
or MAX5392 ID addresses are not found—by selecting
Cancel on the MAX5392 Evaluation Kit popup windows
(Figures 2 and 3). The software can also enter demo
mode at any time from the main window by selecting the
Options | Demo Mode menu item. Demo mode allows
the user to evaluate the software without hardware con-
nectivity. To exit demo mode, deselect the Options |
Demo Mode menu item.
Potentiometer Tab Sheet Controls
Tab sheets U3_MAX5392 and U4_MAX5392 are
used for controlling two MAX5392 ICs. Tab sheets
U1_MAX5387 and U2_MAX5387 are used for controlling
two unpopulated MAX5387 ICs. Each tab sheet contains
a Device Address combo box to select a valid address
and a status indicator to indicate that the address is
valid. An Update Pot A and B checkbox is available
for updating potentiometers A and B simultaneously. A
Default button resets the potentiometer’s A and B wiper
positions to the factory-default midscale position.
Device Address
Each tab sheet contains a Device Address combo
box and a U_ Status indicator. U1_MAX5387 and
U3_MAX5392 Device Address combo boxes store up
to eight addresses found by the EV kit software. The
eight possible addresses are shown in Table 7. Use the
Device Address combo box to select between different
devices that share the same bus. Before selecting U1
and U3 addresses, verify jumpers JU7, JU8, JU9 (U1)
and JU15, JU16, JU17 (U3) settings and then select
the correct addresses using the U1_MAX5387 and
U3_MAX5392 tab sheets’ Device Address combo
Figure 2. MAX5392 Evaluation Kit Popup Window (Interface Board Not Found)
Figure 3. MAX5392 Evaluation Kit Popup Window (No Devices Found)