Hardware Description
26
98-08901C63-A
Figure 12. UART2 Interface
3.6.4
USB
The c18 module operates as a full-speed USB device. The interface connector contains USB interface signals, for example,
VBUS, D+ and D-. The module contains an integrated USB transceiver, thus eliminating the need for an external one.
Integrators should only add an external “B” series receptacle to ensure proper connectivity.
After module power-up, the user should wait for six to seven seconds before attempting to establish USB communication, since
the module is unable to communicate at that time.
The following operating systems are supported for USB communication: Windows 2000.
3.6.5
Removable-User Identity Module (R-UIM) Interface
The c18 has optional internal and external R-UIM interfaces. Two R-UIM signals (UIM DATA and UIM CLK) are shared with
UART2 signals (RXD and CTS). For this reason, only one of these interfaces can be used at a time. The interface supports
3V cards.
Note
All unused UART input signals or input signals that can become disconnected (such as those for cable removal)
should be pulled down. The suggested pull-down resistor is a 100k
Ω
resistor.
Note
R-UIM is hardware supported.
HOST
UART
(DTE)
c18
UART(2)
(DCE)
TXD
TXD
RXD
RXD
CTS
CTS
100k
Ω
RTS
RTS
100k
Ω
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 ...