Specifications

XT55 Hardware Interface Description
Confidential / Preliminary
s
mo b i l e
XT55_hd_v00.02 Page 23 of 116 17.03.2004
Customer application
80 pin B2B
Serial 0
GSM
Serial 1
GPS
GPS –
Modul
80 pin B2B
Active GPS antenna
GSM –
Modul
ASC1
ASC0
GSM antenna
GSM_TXD0
GSM_RXD0
SDI1 SDO1
XT 55
SDO2 SDI2
Serial data 2 Serial data 1
6 Modem
Status lines
GSM module
GPS module
Serial 1
GSM
GSM_TXD1
GSM_RXD1
GSM_RTS1
GSM_CTS1
Serial 2
GPS
Figure 1: Block diagram of serial interface concept