Technical information

Chapter 2: Developer Board and Interfaces Description
August 31, 2009 G24/H24 - Developer’s Kit 31
Host Connection
An external application may communicate with the G24/H24 through the host connector (J1)
(Figure 2-20) and control some or all of the G24/H24's functions. The host connector enables
you to integrate the G24/H24 into an application without installing the G24/H24 inside the
product.
The host connector operates in parallel with the Developer Board peripherals and enables an
external application to share G24/H24 resources with the Developer Board. You may select any
G24/H24 function to control externally, through the host connector, and allow the Developer
Board to control other functions.
Figure 2-20: 70-pin Connectors
You can connect an external application to the G24/H24 Developer Board using a host
interconnect flex cable and connecting it to the host connector (J1). Connect the other end of the
cable to the external application. The cable is an optional accessory.
All pin numbers and functions of the host connector are identical to those of the G24/H24 (P1)
and the G24/H24 diagnostic connector (P100). For more information on the pins of the host
connector, refer to “G24/H24 Interface Connector” on page 34.
These are guidelines for using the host connector:
• When using an external SIM card through the host connector, the Developer Board SIM card
tray must be empty
• When using any of the serial communication channels (USB, RS232, LOGGER) through the
host connector, the Developer Board serial connectors should not be used
• When using the IGN or WAKEUP functions through the host connector, the functions should
be switched off on the Developer Board switches
G24 70-pin
Connector
G24 70-pin
Header Connector
70-pin
Host Connector