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dc2217af
DEMO MANUAL DC2217A
Quick start proceDure
Figure 2. Evaluation Software Interface
board and brings up the LTC4316 Evaluation Software
Interface (Figure 2). The QuikEval software is available at:
http://www.linear.com/QuikEva
l
Interface Design
The QuikEval interface consists of a Scan button which,
when pressed, causes the software to poll every I
2
C ad-
dress one at a time and listen for an acknowledge. Every
address that acknowledges is then listed in the Detected
Address list box directly beneath the Scan button. Once
the addresses are detected, the software determines
which ones correspond to the LEDs on the demo board.
At this point, clicking on the DAC Thru or DAC Translated
light-up control will cause the corresponding LED on the
demo board to illuminate. The Open Translator Tool but-
ton opens a tool that allows users to design an I
2
C bus
using LTC4316 I
2
C devices in an easy to use graphical
format. Figure 2 shows the results of selecting the Scan
button on a DC22117A with a standard configuration.
The Detected addresses show the All Call address, the
address of the DAC on the incoming I
2
C bus, the address
of the translated output I
2
C bus, and the address of the
on board EEPROM. The 0x12 [D1] Thru LED button has
been selected and corresponds to the THRU LED on the
DC2217A being illuminated.
Table 1. Input and Output Connections
NOMENCLATURE
CONNECTOR
DESCRIPTION
IN
J1
Connection to DC590
THRU
J2
Optional Output for
Customer Use
TRANSLATED
J3
Optional Output for
Customer Use
Table 2. Turrets
NOMENCLATURE
DESCRIPTION
VDAC THRU
Analog Output of Thru Address DAC U2
VDAC RMAP
Analog Output of Translated Address DAC U3
GND
Ground
SCL OUT
Serial Clock on Output Side of U1
SDA OUT
Serial Data on Output Side of U1
READY
READY Pin of U1
VBUS_OUT
V
CC
Bus Voltage Selected by VBUS_OUT
Jumper for SCLOUT and SDAOUT
SCL IN
U1 SCLIN Pin
SDAIN
U1 SDAIN Pin
XORL
U1 XORL Pin
XORH
U1 XORH Pin
ENABLE
U1 ENABLE Pin
EXTVBUS
Input for External V
CC
for U1 and Input Pull
Up Supply
VBUS_IN
Internal V
CC
Bus Supplied by DC590