Zilog Z8F0411 - Manual (Page 21)

MDS General-Purpose Board Development Kit
User Manual
UM016905-1207 MDS-GP Board Features
16
I 2 C Expanders
Three I 2 C bus expanders are included on the MDS-GP board: U2, U13,
and U19. The address of each device is hard-wired on the MDS-GP board
and is set to the functions and addresses as shown in
Table 1 .
GPS and Wireless Data Options
The MDS-GP board supports plug-in options for adding wireless data and
GPS functions.
A two-way wireless module can be plugged into connectors J17 and J19
on the back of the MDS-GP board. The connector pinouts support the
maxstream 900 MHz and 2.4 GHz radio modules. For module details and
ordering information, visit
www.maxstream.net .
A trimble lassen SQ GPS module can be plugged into connector J15. For
module details and sales locations, visit
www.trimble.com .
The MDS-GP board is equipped with two holes for adding a wire-tie to
secure the module to the board.
Figure 8 displays a maxstream wireless
module installed on the underside of the MDS-GP board.
These modules are not included in the MDS-GP board kit.
Table 1. I 2 C Bus Expanders
I 2 C Bus
Expander Address Function
U2 0100010 R/W Software serial port control jumpers
U13 0100001 R/W LCD four bit data, LCD enable pin
and LED control
U19 0100000 R/W Relay/High drive outputs
Note: