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Hardware Requirements for CDG2 and Field Testing
66
98-08901C63-A
C.3
c18 MODELS WITH A 28-PIN INTERFACE CONNECTOR
c18 models that have a 28-pin interface connector, may be supplied in two configurations:
• With hardware preset for RS232 communication mode
• Without hardware preset for RS232 communication mode
The second configuration enables communicating via USB.
Integrators should prepare test connectors or test points for the following pins:
For Configuration:
• AUDIO_IN: Must be pulled down with 10
k
Ω
to configure the c18 in USB+RS232 mode.
• USB_VBUS: Voltage (> 4 V) from the USB port must be present for configuring USB+RS232 mode (for configuration and
communication).
• OPT1: A 10k
Ω
pull-down resistor (R6203) on the c18 must be removed when using USB+RS232 mode. The location of the
R6203 resistor is shown in Figure 33. R6203 is not installed on c18 models that are not hardware configured for RS232
mode.
Figure 33. Location of the R6203 Resistor on the c18
Содержание c18
Страница 1: ...Developer s Guide Motorola c18 Cellular Engine Module Description 98 08901C63 A ...
Страница 8: ...viii 98 08901C63 A ...
Страница 20: ...Introduction 12 98 08901C63 A ...
Страница 46: ...Hardware Description 38 98 08901C63 A ...
Страница 56: ...Mechanical Description 48 98 08901C63 A Figure 22 c18a1 Bottom View Figure 23 c18a1 Side View ...
Страница 57: ...98 08901C63 A 49 Mechanical Description Figure 24 c18c Top View Figure 25 c18c Bottom View ...
Страница 60: ...Service Support 52 98 08901C63 A ...
Страница 62: ...Suggested Connectors 54 98 08901C63 A ...
Страница 78: ...Hardware Requirements for CDG2 and Field Testing 70 98 08901C63 A ...
Страница 82: ...Index 74 98 08901C63 O ...