Hardware Interface Description - KORE Telematics

More documents

Recommendations

Info

XT55/56 Hardware Interface Description Confidential / Released s 3.3 Power up / down scenarios In general, be sure not to turn on GSM part of the XT55/56 module while it is out of the operating range of voltage and temperature stated in Chapters 6.2 and 6.3. The GSM part of the XT55/56 would immediately switch off after having started and detected these inappropriate conditions. 3.3.1 Turn on the GSM part of XT55/56 The GSM part of the XT55/56 can be activated in a variety of ways, which are described in the following chapters: • via ignition line GSM_IGT: starts normal operating state (see Chapters 3.3.1.1 and 3.3.1.2) • via GSM_POWER line: starts charging algorithm (see Chapters 3.5.4 and 3.3.1.3) • via RTC interrupt: starts Alarm mode (see Chapter 3.3.1.4) XT55/56_hd_v02.06a Page 30 of 125 17.12.2004
XT55/56 Hardware Interface Description Confidential / Released s 3.3.1.1 Turn on the GSM part of XT55/56 using the ignition line GSM_IGT (Power on) To switch on the XT55/56 GSM part the GSM_IGT (Ignition) signal needs to be driven to ground level for at least 100ms and not earlier than 10ms after the last falling edge of GSM_VDD. This can be accomplished using an open drain/collector driver in order to avoid current flowing into this pin. GSM_BATT+ min. 10ms HiZ min. 100ms HiZ GSM_IGT GSM_VDD ca. 60ms GSM_TXD0 GSM_TXD1 GSM_DSR0 GSM_EMERGOFF Software controlled Serial interfaces ASC0 and ASC1 Undefined Inactive Active ca. 300ms ca. 900ms For details please see Chapter 3.3.1.2 Figure 3: Power-on by ignition signal If configured to a fix baud rate, the GSM part of the XT55/56 will send the result code ^SYSSTART to indicate that it is ready to operate. This result code does not appear when autobauding is active. See Chapter AT+IPR in [1]. In a battery operated XT55/56 application, the duration of the GSM_IGT signal must be 1s minimum when the charger is connected and you may want to go from Charge only mode to Normal mode. XT55/56_hd_v02.06a Page 31 of 125 17.12.2004
Page 1 and 2: XT55/56 Hardware Interface Descript
Page 29: XT55/56 Hardware Interface Descript
Page 81 and 82:
XT55/56 Hardware Interface Descript
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125:
show all

Hardware Interface Description - KORE Telematics

Create successful ePaper yourself

Delete template?

Save as template?