User Manual

GM47/48 Technical description
BA/SEM/MS 02:0004 Rev B
33
3.15 TX_ON - Burst Transmission
Pin Signal Dir Description
35 TX_ON O GSM module on transmission
The TX_ON is a digital signal output. This shall indicate that the
module is going to transmit the burst. Burst transmission is the time
when a GSM transceiver unit.
Dig 2.75 CMOS Output so general electrical characteristics are
applicable.
3.16 Timestamp
Pin Signal Dir Description
32 TIMESTAMP O Global Positioning System Timestamp
TIMESTAMP is a Dig. 2.75 V CMOS Output electrical
characteristics, with DGND as the reference.
Its main purpose is the A-GPS timestamp. As it is shown this is only
applicable when the Assisted GPS is implemented. In order to apply
the assisted GPS performance not only MS implementation is
necessary but network side as well.