MAX6955EVKIT Maxim Integrated, MAX6955EVKIT Datasheet - Page 5

• Manufacturer Part Number: MAX6955EVKIT
• Description: LED Lighting Development Tools Evaluation Kit for the MAX6955
• Manufacturer: Maxim Integrated
• Series: MAX6955r

Specifications of MAX6955EVKIT

• Product: Evaluation Kits

JU2 select the device address for U1 and jumpers JU3
and JU4 select the device address for U2.
the device address selection for the various JU1 and
JU2 jumper settings.
selection for the various JU3 and JU4 jumper settings.
Before changing the default device address for U1 or
U2, read the Alphanumeric Entry for U1 and
Alphanumeric Entry for U2 sections pertaining to
required modifications for the Address (write) and
Address (read) combo boxes.
An OSC pad for U1 is provided for external clock oper-
ation and an OSC_OUT pad for U2 is also provided for
cascading additional MAX6955 devices. When the
OSC pad is unconnected, the internal oscillator of U1
Table 1. U1 Address Selection for
Jumpers JU1 and JU2
*Default for U1.
JUMPER POSITION
JU1
1-3*
1-2
1-3
1-4
1-5
1-2
1-4
1-5
1-2
1-3
1-4
1-5
1-2
1-3
1-4
1-5
_______________________________________________________________________________________
JU2
1-3*
1-2
1-2
1-2
1-2
1-3
1-3
1-3
1-4
1-4
1-4
1-4
1-5
1-5
1-5
1-5
Table
OSC and OSC_OUT Pads
2 lists the device address
(Write)
0xCA*
0xDE
0xDA
0xDC
0xCE
0xCC
0xD8
0xC8
0xD6
0xD2
0xD4
0xD0
0xC6
0xC2
0xC4
0xC0
DEVICE ADDRESS
Table
(Read)
0xCB*
0xDD
0xCD
0xDF
0xDB
0xD9
0xCF
0xC9
0xD7
0xD3
0xD5
0xD1
0xC7
0xC3
0xC5
0xC1
1 lists
MAX6955 Evaluation Kit
drives both U1 and U2 because OSC_OUT of U1 is
directly connected to OSC of U2 with a trace on the
board. It is also possible to drive the OSC pad of U1
with an external clock between 1MHz to 8MHz.
The MAX6955 EV kit utilizes the PC’s parallel port to
generate a 2-wire interface for easy evaluation.
Customers who wish to evaluate U1 and U2 using their
own 2-wire interface must remove the parallel port
cable from the board and attach the new 2-wire inter-
face to the SCL, SDA, and GND pads located on the
upper left-hand side of the MAX6955 EV kit board. The
SCL, SDA, and GND pads are also useful for probing
the 2-wire waveforms with a digital oscilloscope or logic
analyzer.
Table 2. U2 Address Selection for
Jumpers JU3 and JU4
*Default for U2.
JUMPER POSITION
JU3
1-5*
1-2
1-3
1-4
1-5
1-2
1-3
1-4
1-5
1-2
1-3
1-4
1-5
1-2
1-3
1-4
JU4
1-5*
1-2
1-2
1-2
1-2
1-3
1-3
1-3
1-3
1-4
1-4
1-4
1-4
1-5
1-5
1-5
SCL, SDA, and GND Pads
(Write)
0xC0*
0xDA
0xDC
0xCA
0xCC
0xDE
0xD8
0xCE
0xC8
0xD6
0xD2
0xD4
0xD0
0xC6
0xC2
0xC4
DEVICE ADDRESS
(Read)
0xC1*
0xDB
0xDD
0xCB
0xCD
0xDF
0xD9
0xCF
0xC9
0xD7
0xD3
0xD5
0xD1
0xC7
0xC3
0xC5
5