MAX7314EVKIT+ Maxim Integrated, MAX7314EVKIT+ Datasheet - Page 6

• Manufacturer Part Number: MAX7314EVKIT+
• Description: Peripheral Drivers & Components - PCIs Evaluation Kit for the MAX7314
• Manufacturer: Maxim Integrated

Specifications of MAX7314EVKIT+

• Operating Supply Voltage: 2 V to 3.6 V

MAX7314 Evaluation Kit
Note: Words in boldface are user-selectable features
in the MAX7314 EV kit software. A mouse or the key-
board’s tab key is used to navigate various items on the
main window.
The MAX7314 EV kit software features four window
tabs: Global and White LED Config/Status, RGB LED
Config/Status, Port Configuration, and Port Status.
Each tab provides a mixture of controls and labels to
facilitate the evaluation of the MAX7314 EV kit.
Additional controls are also provided on the software’s
main window and in the menu bar.
The MAX7314 EV kit software configures the 2-wire
communication speed to 400kHz by default. The speed
can be reduced to 100kHz if required, by selecting
View | 2-Wire Speed | 100kHz from the menu bar. This
configuration might be required if slower 2-wire
devices are connected to the EV kit’s SCL and SDA
pads. Once the EV kit has been detected, the software
continues to poll the interface, reverifying device con-
nectivity. To disable device polling, deselect the
Options | Poll U1 menu item.
Table 10. Initial Configuration
*See the Global Configuration/Status section.
6
Blink Phase 0 Outputs P15–P8
Blink Phase 1 Outputs P15–P8
Blink Phase 0 Outputs P7–P0
Blink Phase 1 Outputs P7–P0
Ports Configuration P15–P8
Outputs Intensity P15, P14
Detailed Description of Software
Ports Configuration P7–P0
_______________________________________________________________________________________
Outputs Intensity P1, P0
Master, O16 Intensity
Configuration
REGISTER
.
.
.
PWM oscillator is enabled; master intensity is 1/15; O16 intensity is 8/16*
IN T/O 16 i s an i nter r up t outp ut; b l i nk i s d i sab l ed ; g l ob al i ntensi ty i s enab l ed
PWM outputs (intensity duty cycle is 8/16)
High-impedance outputs
High-impedance outputs
INITIALIZE CONDITION
Outputs low
Outputs low
Outputs
Outputs
The main window’s status bar provides connection and
communication information. The left section of the sta-
tus bar provides the current connection status between
the PC and EV kit. The right section of the status bar
provides communication status in regards to sending
and receiving data to and from the MAX7314 IC.
The software has a demo mode that is accessible by
selecting the Options | Demo Mode menu item. When
in demo mode, all software communication with the EV
kit hardware is disabled. This feature enables a user to
evaluate the software without hardware connectivity.
Upon starting the program, the MAX7314 EV kit soft-
ware establishes a connection with the EV kit’s on-
board interface and automatically detects the U1 serial
address. Once a connection has been made, the soft-
ware initializes the MAX7314 IC and starts up with the
Global and White LED Config/Status tab sheet select-
ed (see Figure 1). When initialized, the IC is configured
to operate with ports P0–P15 as outputs and port
INT/O16 as an interrupt output. Table 10 lists the initial-
ized state of the device registers.
Software Startup
REGISTER DATA
0x0C
0x00
0x00
0x00
0x00
0xFF
0xFF
0x17
0x77