DEMO MANUAL DC1613A
I
2
C/SMBUS/PMBUS
Controller
DESCRIPTION
Demonstration circuit 1613A is a USB-based controller
with generic Inter Integrated Circuit (I
2
C) ports as well as
SMBUS/PMBUS capabilities. It is designed to mate with
Linear Technology’s family of LTpowerPlay™ demonstra-
tion boards. The demo board is fully isolated from the
host PC’s ground. The evaluation software automatically
detects which demo board is connected and loads the
appropriate control screen.
The LTpowerPlay system provides a quick and easy way
to evaluate the performance of a wide variety of Linear
Technology’s products
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
LTpowerPlay is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
DEMONSTRATION CIRCUIT
TO SMBUS
TO USB
dc1613af
1
DEMO MANUAL DC1613A
QUICK START PROCEDURE
For proper equipment setup, follow the procedure
below:
1. Do NOT plug in the DC1613A to the PC, before running
the installation program.
2. Download the LTpowerPlay installation program from
http://www.linear.com/software/.
3. Run the LTpowerPlay installation program and follow
the on-screen instructions.
The LTpowerPlay demo software requires a PC that is
running Windows XP (or later), and has an available USB
port.
4. Connect the demonstration circuit to be evaluated to
the DC1613A using the supplied 12-conductor ribbon
cable. The demo software detects the circuit and starts
the appropriate control screen.
Each demonstration board also comes with a Quick Start
guide similar to this one. For usage details relevant to a
particular circuit refer to its Quick Start guide.
SOFTWARE TOOLS
The LTpowerPlay demo software includes tools for auto-
matic software updates and for quickly retrieving relevant
documentation from the World Wide Web.
NOTE: Adobe Acrobat Reader is required to view the docu-
ments and is available at http://www.adobe.com.
To use the tools:
• Quit the demonstration circuit software or disconnect the
USB cable so that the main control panel appears:
To update the software (requires internet connection):
• Choose Update from the Tools menu.
This automatically updates the main program and
drivers for individual demo circuits.
dc1613af
2
DEMO MANUAL DC1613A
TROUBLESHOOTING GUIDE
Problem:
DC1613A is plugged in, but LTpowerPlay screen
still says “USB Serial Controller Not Connected.”
Solution:
The most likely cause is improper installation of
the USB drivers, which causes Windows to recognize the
DC1613A as an “Unknown Device.” Open the Windows
Control Panel, open “System” and click the “Device man-
ager” tab. Open the “Other Devices” item and look for USB
SERIAL CONTROLLER. Select this item and click the remove
button. Unplug the DC1613A, reinstall the LTpowerPlay
software and follow the on-screen instructions.
Problem:
Demo board software loads properly, but will
not run or gives “Device Not accessible” errors.
Solution:
Verify that the demo board is properly powered
up. This Quick Start guide lists the basic power connec-
tions to DC1613A. Some demo boards may have additional
requirements; refer to the demo board’s Quick Start guide
for details.
Problem:
After connecting the demo board to DC1613A
with the supplied 12-pin ribbon cable, LTpowerPlay soft-
ware still displays “Evaluation Board is not Connected.”
Solution:
Contact Linear Technology Applications
Engineering.
dc1613af
3
28
7
VCC
VDD
VDD
1
V+
GND
SET
USB_RXF#
OUT
DIV
17
16
15
14
11
10
9
8
RB5/CS
5
OSCIN
R5
1k
R1
49.9k
R2
475
PROG
JP1
5
6
3
4
1
2
HD2X3-079
4
R4
33.2
30
SCHEMATIC DIAGRAM
C3
0.1uF
2
3
R3
20k
RA5
RA4
RA3
RA2
RA1
RA0
24
23
22
21
20
19
RA5
RA4
USB_TXE#
USB_WR_CLK#
USB_RXF#
USB_RD_CLK#
PGD/RB7
PGC/RB6
RB5
RB4
RB3
31
OSCOUT
RB2
RB1
INT/RB0
NXP_WR_
ALERTB
NXP_INT_
VCC
C
C
DEMO MANUAL DC1613A
SYSTEM_RST#
RX/RC7
TX/RC6
MOSI/RC5
MISO/RC4
SCK/RC3
RC2
18
MCLR
RC1
RC0
R10
4.99k
OPT
3
2
1
1
0
HD1X3-079
JP2
OPT
27
RE2/CS
RE1/WR
RE0/RD
VSS
VSS
26
25
R12
1M
OPT
1
44
43
42
37
36
35
32
NXP_RD_
NXP_CE_
RC5/MOSI/SDAO
RC4/MISO/SDAI
RC3_SCK
NXP_A0_
NXP_A1_
OUTEN
AUX_MAIN#
GPO_2
GPO_1
RD7
RD6
RD5
RD4
RD3
RD2
RD1
RD0
5
4
3
2
41
40
39
38
PIC_DB7
PIC_DB6
PIC_DB5
PIC_DB4
PIC_DB3
PIC_DB2
PIC_DB1
PIC_DB0
6
B
29
ASSY
-A
-B
R63
OPT
0
R64
0
OPT
R65
0
OPT
R66
OPT
1k
R67
0
OPT
R68
OPT
1k
Q6
OPT
2N7002
Q7
OPT
2N7002
CUSTOMER NOTICE
APPROVALS
KT
LEO C.
A
NOTES: UNLESS OTHERWISE SPECIFIED
TECHNOLOGY
TITLE: SCHEMATIC
1. ALL RESISTORS ARE IN OHMS, 0402.
ALL CAPACITORS ARE IN MICROFARADS, 0402.
2. INSTALL SHUNTS ON JUMPERS AS SHOWN.
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
I2C / SMBUS / PMBUS CONTROLLER
SIZE
IC NO.
N/A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
SCALE = NONE
3
DATE:
2
Monday, April 19, 2010
1
5
4
-
-
U2
LTC1799CS5
+
+
4
4
3
2
1
5
REVISION HISTORY
ECO
_
2
PRODUCTION
LEO C.
04-19-10
VPIC
REV
DESCRIPTION
APPROVED
DATE
D
C1
0.1uF
U1
PIC16LF1937-I/PT
COMMAND
LED1
LTST-C190KGKT
(LITE-ON)
GRN
C2
0.1uF
VCC
D
B
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
A
DEMO CIRCUIT 1613A
SHEET 1
REV.
2
OF 4
dc1613af
5
4
3
2
1
C9
0.1uF
C11
0.1uF
C13
0.1uF
30
3
26
13
U6
FT245BL
R17
22.1
8
7
5
32
1
2
6
31
5
R26
10k
4
C15
0.1uF
6
C16
0.1uF
VCC
CS
CLK
R20
10k
U7
93LC46BT-I/OT
DO
VSS
DI
1
2
3
R25
2.21k
USB5V
R19
1.5k
R69
0
1206
R18
22.1
C18
47pF
C19
47pF
J2
C14 USB5V
0.01uF
C12
0.1uF
C10
10uF,6.3V
0805
D
R14 VCC
475
USB5V
D
AVCC
VCC
VCC
VIO
SCHEMATIC DIAGRAM
USBDM
USBDP
PIC_DB7
PIC_DB6
PIC_DB5
PIC_DB4
PIC_DB3
PIC_DB2
PIC_DB1
PIC_DB0
18
19
20
21
22
23
24
25
D7
D6
D5
D4
D3
D2
D1
D0
1
2
3
4
5
6
USB-B
MILL-MAX
1
2
3
4
5
6
C
USB_RD_CLK#
USB_WR_CLK#
USB_TXE#
USB_RXF#
C
R21
10k
48MHZ
R22
R23
R24
10k
AGND
29
U8
LTC6905CS5-96
9
17 GND
GND
1k
33.2
VCC
16
15 RD
RSTOUT
14 WR
12 TXE
RXF
EECS
27
XTIN
EESK
28
XTOUT EEDATA
11
3V3OUT
10 SI/WU
4 PWREN
TEST
RST
USB5V
C17
0.1uF
1
V+
GND
SET
DIV
4
OUT
5
EN
DIS
JP4
HD1X3-079
1
2
3
2
3
EE
B
B
CUSTOMER NOTICE
APPROVALS
KT
LEO C.
A
TECHNOLOGY
TITLE: SCHEMATIC
1630 McCarthy Blvd.
Milpitas, CA 95035
Phone: (408)432-1900
www.linear.com
Fax: (408)434-0507
LTC Confidential-For Customer Use Only
A
LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A
CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS;
HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO
PCB DES.
VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL
APP ENG.
APPLICATION. COMPONENT SUBSTITUTION AND PRINTED
CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT
PERFORMANCE OR RELIABILITY. CONTACT LINEAR
TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE.
I2C / SMBUS / PMBUS CONTROLLER
SIZE
IC NO.
N/A
THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND
SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS.
DEMO CIRCUIT 1613A
SCALE = NONE
3
REV.
2
DATE:
2
Monday, April 19, 2010
1
SHEET 2
OF 4
5
4
DEMO MANUAL DC1613A
dc1613af
5
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