USBTO232 User Guide

19-0677; Rev 0; 11/06
USB-to-COM Port Adapter Board User Guide
The USBTO232 is an adapter board that converts a
PC’s USB port into a standard COM port. A COM port is
also known as the standard serial port that uses
Recommended Standard 232 (RS-232).
The USBTO232 is included with selected Maxim EV kits
and EV systems that were originally designed for the
PC COM port and later updated to also support the
USB port. Data sheets for EV kits and EV systems that
can use the USBTO232 have been updated to reflect
compatibility and also provide ordering information.
Use of the USBTO232 in applications other than those
EV kits specified by Maxim is not supported.
Important: Before using the USBTO232, see the Quick
Start section of this data sheet to correctly install the
USB driver for the appropriate Windows ® operating
system.
Windows is a registered trademark of Microsoft Corp.
Features
USB Powered
USB Driver for Windows 98SE/2000/XP Operating
Systems
USB and I/O Power LED Indicators
Two GPIO LED Indicators
USB Cable Included
8-Pin Signal Header
Proven PCB Layout
Fully Assembled and Tested
Ordering Information
PART
PC
INTERFACE
OPERATING SYSTEMS
SUPPORTED
USBTO232+
USB
Windows 98SE/2000/XP
+ Denotes lead-free and RoHS compliance.
Component List
DESIGNATION
QTY
0.01µF ±10%, 50V X7R ceramic
capacitor (0603)
TDK C1608X7R1H103K
P1
1
USB type B right-angle female
receptacle connector
Assmann AU-Y1007-R
2
47pF ±5%, 50V COG ceramic
capacitors (0603)
TDK C1608C0G1H470J
P2
1
Short DB9 right-angle male
receptacle connector (without
cable-locking screws)
7
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
TDK C1608X7R1C104K
R1, R2
2
270Ω ±5% resistors (0603)
(use lead-free parts only)
U1
1
USB-to-UART converter
FTDI FT232RL (28-pin SSOP)
U2
1
MAX213EEAI+ (28-pin SSOP)
—
3
Shunts
—
1
USBTO232+ PCB
—
1
USB high-speed A-to-B 6ft cable
DESIGNATION
QTY
C1
1
C2, C3
C4–C8, C11,
C12
C9
1
DESCRIPTION
4.7µF ±10%, 6.3V X5R ceramic
capacitor (0603)
TDK C1608X5R0J475K
C10
1
1µF ±10%, 6.3V X5R ceramic
capacitor (0603)
TDK C1608X5R0J105K
D1
1
Red LED (0603)
Panasonic LNJ208R8ARA
1
Green LED (0603)
Stanley Electric BG1111C-TR
Panasonic LNJ314G8TRA
D2
FB1
1
40Ω @ 100MHz, 1.5A ferrite bead
(0805)
Steward MI0805K400R-10
H1
1
8-pin header
JU1, JU2, JU3
3
3-pin headers
DESCRIPTION
Component Supplier
SUPPLIER
TDK
PHONE
847-803-6100
WEBSITE
www.component.tdk.com
Note: Indicate the Maxim EV kit that you are using when contacting this component supplier.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
USBTO232
General Description
USBTO232
USB-to-COM Port Adapter Board User Guide
Quick Start
The following instructions are for installing USB drivers
and the EV kit software. Once the USB drivers and EV
kit software have been installed, refer to the Quick Start
section of the appropriate EV kit data sheet for EV kitspecific instructions.
Recommended Equipment
• USBTO232 board (USB cable included)
• Maxim EV kit (or EV system) with a COM port PC
connection
• Corresponding EV kit data sheet
• User-supplied PC with a USB port
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
98SE/2000/XP operating system.
Procedure
1) Visit the Maxim website (www.maxim-ic.com/evkitsoftware) to download the latest version of the EV
kit software that supports USB. Save the EV kit software to a temporary folder and uncompress the file,
if it is a .zip file.
2) Install the EV kit software on your computer by running the INSTALL.EXE program inside the temporary folder. The program files are copied to
C:\Program Files\MAXxxxxx and icons are created in the Windows Start | Programs menu.
3) Uncompress the USB driver file copied into
C:\Program Files\MAXxxxxx after the software is
installed. If you are using Windows 98SE, uncompress the USB_Driver_98_ME_V1.09.zip file. If you
are using Windows 2000/XP, uncompress the
USB_Driver_XP_2K_V2.00.zip file. Uncompress
the contents of the .zip file into C:\Program
Files\MAXxxxxx.
4) Verify that the following USBTO232 jumpers are in
the default positions:
JU1: (1-2)
JU2: (2-3)
JU3: (2-3)
5) Connect the included USB cable from the PC’s USB
port (Type A) to the Type B USB connector on the
USBTO232 board.
6) Verify that the red VCC power LED (D1) lights up.
Also verify that the green VCCIO power LED (D2)
lights up.
7) Go to the appropriate USB Driver Installation section in this data sheet for the version of Windows
you are using and return to step 8 when finished.
For example, if you are using Windows XP, go to
the Windows XP USB Driver Installation section.
Windows XP: Page 3
Windows 2000: Page 11
Windows 98SE: Page 25
8) Connect the USBTO232 board to the EV kit (or EV
system) by connecting the male DB9 connector on
the USBTO232 board to the female DB9 connector
on the EV kit.
9) Refer to the Quick Start section of the appropriate EV
kit data sheet for further EV kit-specific instructions.
Detailed Description of Hardware
The USBTO232 is an adapter board that converts a
PC’s USB port into a standard COM port. The
USBTO232 board has three configurable jumpers: JU1,
JU2, and JU3. Jumper JU1 is the I/O supply selection
(see Table 1), jumper JU2 is the USB power-supply
indicator (see Table 2), and jumper JU3 is the 3.3V
power-supply indicator (see Table 3).
Table 1. I/O Supply Selection (VCCIO)
JUMPER
SHUNT POSITION
JU1
DESCRIPTION
1-2*
VCCIO = VCC = 5V
2-3
VCCIO = VCC30 = 3.3V
*Default position.
Table 2. USB Power-Supply Indicator
(VCC–D1)
JUMPER
SHUNT POSITION
DESCRIPTION
1-2
General-purpose LED
connected to CBUS0
2-3*
Indicates USB power present
when red LED (D1) is lit
JU2
*Default position.
Table 3. 3.3V Power-Supply Indicator
(VCC30–D2)
JUMPER
SHUNT POSITION
DESCRIPTION
1-2
General-purpose LED
connected to CBUS1
2-3*
Indicates regulated 3.3V
power present when green
LED (D2) is lit
JU3
*Default position.
2
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USB-to-COM Port Adapter Board User Guide
described above after 30 seconds, remove the USB
cable from the USBTO232 board and reconnect it.
Administrator privileges are required to install the USB
device driver on Windows 2000/XP.
Figure 1. Windows XP: Found New Hardware Wizard |Welcome Window
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3
USBTO232
Windows XP USB Driver Installation
1) Once the USBTO232 board is connected to the PC
for the first time in Windows XP, a Found New
Hardware Wizard | Welcome window appears, as
shown in Figure 1. Choose the No, not this time
selection and press the Next button to get started. If
you do not see a window that is similar to the one
USBTO232
USB-to-COM Port Adapter Board User Guide
2) A Found New Hardware Wizard | FTDI FT8U2XX
Device window (Figure 2) appears next. This window asks What do you want the wizard to do?.
Choose the Install from a list or specific location
(Advanced) option and press the Next button.
Figure 2. Windows XP: Found New Hardware Wizard | FTDI FT8U2XX Device Window
4
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USB-to-COM Port Adapter Board User Guide
EV kit being evaluated). Press the Next button
when finished.
Figure 3. Windows XP: Found New Hardware Wizard | Search Options Window
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5
USBTO232
3) At the Found New Hardware Wizard | Search
Options window (Figure 3), choose the Search for
the best driver in these locations option and
check the Include this location in the search
checkbox. Press the Browse button and navigate
to the path: C:\Program Files\MAXxxxxx (where
xxxxx represents the Maxim IC part number on the
USBTO232
USB-to-COM Port Adapter Board User Guide
4) The Found New Hardware Wizard | Complete window appears (Figure 4). Press the Finish button.
Figure 4. Windows XP: Found New Hardware Wizard | Complete Window
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USB-to-COM Port Adapter Board User Guide
USBTO232
5) A Found New Hardware Wizard | Welcome window appears again (Figure 5). Choose the No, not
this time selection and press the Next button.
Figure 5. Windows XP: Found New Hardware Wizard | Welcome Window
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7
USBTO232
USB-to-COM Port Adapter Board User Guide
6) The next window is the Found New Hardware
Wizard | USB Serial Port window (Figure 6). This
window asks What do you want the wizard to
do?. Choose the Install from a list or specific
location (Advanced) option and press the Next
button.
Figure 6. Windows XP: Found New Hardware Wizard | USB Serial Port Window
8
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USB-to-COM Port Adapter Board User Guide
USBTO232
7) At the Found New Hardware Wizard | Search
Options window (Figure 7), choose the Search for
the best driver in these locations option and
check the Include this location in the search
checkbox. Press the Browse button and navigate
to the path: C:\Program Files\MAXxxxxx. Press
the Next button when finished.
Figure 7. Windows XP: Found New Hardware Wizard | Search Options Window
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9
USBTO232
USB-to-COM Port Adapter Board User Guide
8) The next window is the Found New Hardware
Wizard | Complete window (Figure 8). Press the
Finish button.
9) When finished, return to step 8 of the USBTO232
Quick Start section.
Figure 8. Windows XP: Found New Hardware Wizard | Complete Window
10
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USB-to-COM Port Adapter Board User Guide
USBTO232
Windows 2000 USB Driver Installation
1) Once the USBTO232 board is connected to the PC
for the first time in Windows 2000, a Found New
Hardware window appears, as shown in Figure 9.
Figure 9. Windows 2000: Found New Hardware Window
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11
USBTO232
USB-to-COM Port Adapter Board User Guide
2) A Found New Hardware Wizard | Welcome window
then appears (Figure 10). Press the Next button.
Figure 10. Windows 2000: Found New Hardware Wizard | Welcome Window
12
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USB-to-COM Port Adapter Board User Guide
USBTO232
3) At the Found New Hardware Wizard | Install
Hardware Device Drivers window (Figure 11),
choose Search for a suitable driver for my device
(recommended) and press the Next button when
finished.
Figure 11. Windows 2000: Found New Hardware Wizard | Install Hardware Device Drivers Window
______________________________________________________________________________________
13
USBTO232
USB-to-COM Port Adapter Board User Guide
4) The Found New Hardware Wizard | Locate Driver
Files window appears next (Figure 12). Check the
Specify a location checkbox and press the Next
button when finished.
Figure 12. Windows 2000: Found New Hardware Wizard | Locate Driver Files Window
14
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USB-to-COM Port Adapter Board User Guide
USBTO232
5) The next window is the Found New Hardware
Wizard | Path window (Figure 13). Press the
Browse button and choose the path C:\Program
Files\MAXxxxxx. Press the OK button when finished.
Figure 13. Windows 2000: Found New Hardware Wizard | Path Window
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15
USBTO232
USB-to-COM Port Adapter Board User Guide
6) The Found New Hardware Wizard | Driver Files
Search Results window is shown in Figure 14. Press
the Next button after the wizard finds the driver.
Figure 14. Windows 2000: Found New Hardware Wizard | Driver Files Search Results Window
16
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USB-to-COM Port Adapter Board User Guide
USBTO232
7) At the Found New Hardware Wizard | Complete
window (Figure 15), press the Finish button.
Figure 15. Windows 2000: Found New Hardware Wizard | Complete Window
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17
USBTO232
USB-to-COM Port Adapter Board User Guide
8) A Found New Hardware window appears for the
USB Serial Port, as shown in Figure 16.
Figure 16. Windows 2000: Found New Hardware Window
18
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USB-to-COM Port Adapter Board User Guide
USBTO232
9) When the Found New Hardware Wizard |
Welcome window appears (Figure 17), press the
Next button.
Figure 17. Windows 2000: Found New Hardware Wizard | Welcome Window
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19
USBTO232
USB-to-COM Port Adapter Board User Guide
10) At the Found New Hardware Wizard | Install
Hardware Device Drivers window (Figure 18),
choose Search for a suitable driver for my device
(recommended) and press the Next button when
finished.
Figure 18. Windows 2000: Found New Hardware Wizard | Install Hardware Device Drivers Window
20
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USB-to-COM Port Adapter Board User Guide
USBTO232
11) The Found New Hardware Wizard | Locate Driver
Files window (Figure 19) appears. Check the
Specify a location checkbox and press the Next
button when finished.
Figure 19. Windows 2000: Found New Hardware Wizard | Locate Driver Files Window
______________________________________________________________________________________
21
USBTO232
USB-to-COM Port Adapter Board User Guide
12) At the Found New Hardware Wizard | Path window (Figure 20), press the Browse button and
choose the path C:\Program Files\MAXxxxxx.
Press the OK button when finished.
Figure 20. Windows 2000: Found New Hardware Wizard | Path Window
22
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USB-to-COM Port Adapter Board User Guide
USBTO232
13) The Found New Hardware Wizard | Driver Files
Search Results window ( Figure 21) appears. Press
the Next button after the wizard finds the driver.
Figure 21. Windows 2000: Found New Hardware Wizard | Driver Files Search Results Window
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23
USBTO232
USB-to-COM Port Adapter Board User Guide
14) The next window is the Found New Hardware
Wizard | Complete window (Figure 22). Press the
Finish button.
15) When finished, return to step 8 of the USBTO232
Quick Start section.
Figure 22. Windows 2000: Found New Hardware Wizard | Complete Window
24
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USB-to-COM Port Adapter Board User Guide
USBTO232
Windows 98SE USB Driver Installation
1) Once the USBTO232 board is connected to the PC
for the first time in Windows 98SE, an Add New
Hardware Wizard | Start window appears, as
shown in Figure 23. Press the Next button to get
started.
Figure 23. Windows 98SE: Add New Hardware Wizard | Start Window
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25
USBTO232
USB-to-COM Port Adapter Board User Guide
2) An Add New Hardware Wizard | Options window
appears next (Figure 24). Choose the Search for
the best driver for your device (Recommended)
option and press the Next button when finished.
Figure 24. Windows 98SE: Add New Hardware Wizard | Options Window
26
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USB-to-COM Port Adapter Board User Guide
USBTO232
3) At the Add New Hardware Wizard | Specify
Location window (Figure 25), check the Specify a
location checkbox and press the Browse button.
Choose the path C:\Program Files\MAXxxxxx\
R10906 (where xxxxx represents the Maxim IC part
number on the EV kit being evaluated). Press the
Next button when finished.
Figure 25. Windows 98SE: Add New Hardware Wizard | Specify Location Window
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27
USBTO232
USB-to-COM Port Adapter Board User Guide
4) The Add New Hardware Wizard | Search window
appears (Figure 26). Press the Next button once
the driver has been located.
Figure 26. Windows 98SE: Add New Hardware Wizard | Search Window
28
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USB-to-COM Port Adapter Board User Guide
6) When finished, return to step 8 of the USBTO232
Quick Start section.
Figure 27. Windows 98SE: Add New Hardware Wizard | Complete Window
______________________________________________________________________________________
29
USBTO232
5) The next window is the Add New Hardware Wizard
| Complete window (Figure 27). Press the Finish
button to complete the driver installation.
30
P1
C8
0.1µF
VCC
P1-4
P1-3
P1-2
P1-1
DTR#
CTS#
RI#
DCD#
C9
4.7µF
FB1
C3
47pF
C2
47pF
C1
0.01µF
SLEEP#
USB TYPE B
VCC
N.C.
N.C.
2
11
6
10
12
28
U1
FT232RL
VCCI0
4
2
JU1
3
CBUS0
H1
DSR
17
14
13
22
23
20
C11
0.1µF
C12
0.1µF
RESET#
VCC30
CBUS3
CBUS2
CBUS1
H1-8
H1-7
H1-6
H1-5
H1-4
H1-3
H1-2
H1-1
HEADER 8 PIN
C5
0.1µF
C4
0.1µF
VCC
C10
1µF
CBUS0
VCC
R1IN
10
14
1
D1
GND
C1-
U2
MAX213
JU2
2 3
R1
270Ω
VCC
R1OUT
T1IN
T2IN
R2OUT
R2IN
T2OUT
T1OUT
13
V+
12
C1+
11
9
8
7
9
1
5
4
3
2
1 T3
OUT
6
VCC
RXDATA
RTS
TXDATA
DTR
3
5
VCC30
RESET# 19
3V3OUT
CBUS3
CBUS2
CBUS1
CBUS0
VCC
DSR#
TXD
RTS#
RXD
AGND GND GND GND TEST
25
7 18 21 26
DTR#
CTS#
RI#
DCD#
CBUS4
OSCO
27 OSCI
24
8
1
USBDM
15 USBDP
16
VCC
JU3
VCC
1
R2
270Ω
VCC30
15
16
17
18
19
20
21
22
23
24
25
26
27
28
3 2
D2
C2+
C2-
V-
R5IN
R5OUT
T3IN
T4IN
R4OUT
R4IN
EN
SHDN
R3OUT
R3IN
T4OUT
CTS
RI
CTS
RTS
DSR
DTR
TXDATA
RXDATA
C6
0.1µF
CBUS1
C7
0.1µF
DCD
DCD#
DTR#
RI#
RI
SLEEP#
CTS#
DCD
P2-9
P2-8
P2-7
P2-6
P2-5
P2-4
P2-3
P2-2
P2-1
DB9 TYPE DTE
P2
USBTO232
USB-to-COM Port Adapter Board User Guide
Figure 28. USBTO232 Schematic
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USB-to-COM Port Adapter Board User Guide
USBTO232
Figure 29. USBTO232 Component Placement Guide—Component Side
Figure 30. USBTO232 PCB Layout—Component Side
Figure 31. USBTO232 PCB Layout—Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 31
© 2006 Maxim Integrated Products
CARDENAS
is a registered trademark of Maxim Integrated Products, Inc.