MAX3111EEVKIT+ Maxim Integrated, MAX3111EEVKIT+ Datasheet - Page 3

• Manufacturer Part Number: MAX3111EEVKIT+
• Description: UART Interface IC Evaluation Kit for the MAX3111E
• Manufacturer: Maxim Integrated

Specifications of MAX3111EEVKIT+

• Number Of Channels: 2
• Data Rate: 250 Kbps
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 3 V
• Supply Current: 1.4 mA

Before beginning, the following equipment is needed:
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Note: In the following sections, software-related items
are identified by bolding. Text in bold refers to items
directly from the EV kit software. Text in bold and
underlined refers to items from the Windows operating
system.
The MAX3111E EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1) Visit
2) Install the EV kit software on your computer by run-
3) Verify that all jumpers (JU1–JU5) are in their default
4) Verify that both DIP switches (SW5, SW6) are in
5) Connect the EV kit to the PC using the RS-232 serial
6) Connect the 3.3V power supply to the +3.3V and
7) Turn on the 3.3V power supply. Verify that all seg-
8) Start the MAX3111E EV kit software by opening its
MAX3111E EV kit (RS-232 serial cable included)
3.3V, 200mA DC power supply
A user-supplied Windows 2000/XP/Vista PC with a
spare serial RS-232 port
OR
A user-supplied Windows 2000/XP/Vista PC with a
spare USB port and Maxim’s USBTO232+ USB-to-
COM port adapter board
load the latest version of the EV kit software,
3111ERxx.ZIP. Save the EV kit software to a tempo-
rary folder and uncompress the ZIP file.
ning the INSTALL.EXE program inside the temporary
folder. The program files are copied and icons are
created in the Windows Start | Programs menu.
positions, as shown in Table 1 (JU1, JU2: Open.
JU3, JU4: 2-3. JU5, rows 1–7: Closed. JU5, row 8:
No shunt. JU5, rows 9 and 10: Open).
their default positions, as shown in Tables 2 and 3
(all positions: On).
cable.
GND pads on the EV kit board.
ments of D1 are lit up, and D2, D3, and D4 are off.
icon in the Start | Programs menu. The EV kit soft-
ware main window appears, as shown in Figure 2.
www.maxim-ic.com/evkitsoftware
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Required Equipment
Quick Start
Procedure
to down-
MAX3111E Evaluation Kit
9) Press the SW1 momentary pushbutton switch on the
10) On the software GUI, accept the default settings for
11) Note: Many PCs do not support 230.4Kbps baud
12) Click the up or down arrow on the spin box in the
The EV kit is only designed to demonstrate the features
of the MAX3111E. No robust error checking or flow-
control algorithms are implemented. All data is in raw
binary format without coding and decoding. A user
should connect an oscilloscope to monitor the wave-
forms on the signal lines to better understand the data
transactions.
The software main window includes eight group boxes,
as shown in Figure 2.
Detailed Description of Software
EV kit board. The µC reads SW5 and SW6 DIP
switch states and configures MAX3111E through a
write-configuration command. Refer to the
MAX3111E IC data sheet for details.
Note: The EV kit sets the following MAX3111E reg-
ister bits to a fixed logic because the µC firmware
relies on these settings to function properly; a user
cannot change these settings:
the PC UART. Click the Select Port drop-down list to
select the COM port that connects to the EV kit. Press
the Open button to open and configure the PC COM
port setting, as defined in the PC UART Setting
group box. Check the status bar at the bottom of the
GUI to verify that the port is opened successfully.
rates. If this is the case, select a lower baud rate on
the GUI and open the port. Change the B3–B0 set-
tings on the EV kit board and press SW1 to config-
ure the MAX3111E accordingly.
PC Sends One ASCII Character to EV Kit group
box. The PC sends a single ASCII character to the
EV kit. Verify that the 7-segment LED follows the
GUI selections.
FEN = 0 (FIFO Enable. Enables the receive FIFO
when FEN = 0; when FEN = 1, FIFO is disabled)
TM = 1 (Mask for T bit. IRQ is asserted if TM =
1 and T = 1)
RM = 1 (Mask for R bit. IRQ is asserted if RM =
1 and R = 1)
PM = 1 (Mask for Pr bit. IRQ is asserted if PM =
1 and Pr = 1)
RAM = 1 (Mask for RA/FE bit. IRQ is asserted if
RAM = 1 and RA/FE = 1)
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