Hardware Requirements For Cdg2 And Field Testing; Overview; C18 Models With 36-Pin Or 70-Pin Interface Connectors - Motorola c18 Developer's Manual

C.1

OVERVIEW

In order to obtain infrastructure approval, equipment containing c18 modules must pass CDG2 testing. The following
capabilities must exist to accommodate such testing:
• Capability of sending logs over a second communication channel while the first communication channel is set for AT
commands. For this purpose, the c18 supports USB+RS232 mode simultaneously (for supported modes of communication,
see "c18 OPERATING MODES" on page 17).
• Integrators must supply the access points and have the ability to support these channels. This includes test points, test
connectors and the signals for configuring the c18 in USB+RS232 mode.
C.2

c18 MODELS WITH 36-PIN OR 70-PIN INTERFACE CONNECTORS

In c18 models with 70-pin or 36-pin interface connectors, all pins are available on the interface connector. Integrators should
prepare test points or test connectors for the following pins:
For Mode Configuration:
• AUDIO_IN: Must be pulled down with 10
• OPT1: Must be left open for USB+RS232 mode.
• USB_VBUS: Voltage (> 4 V) from the USB port must be present for configuring USB+RS232 mode.
If the c18 model is hardware configured for RS232 mode, you will have to remove R6203 (10K pull-down resistor).
For R6203 location, refer to Figure 33.
To determine whether your specific c18 model is hardware cofigured for RS232 mode, please contact your local
Note
sales representative.
For Communication With The Logger:
Customers whose primary application communicates with the c18 via UART1 should use the following pins for communicating
with the logger:
• USB_D+
• USB_D-
Customers whose primary application communicates with the c18 via USB should use the following pins for communicating
with the logger:
• UART1_TXD
• UART1_RXD
• UART1_CTS
• UART1_RTS
98-08901C63-A
I. HARDWARE REQUIREMENTS
FOR CDG2 AND FIELD TESTING
Ω to configure the c18 in USB+RS232 mode.
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