Tdma Radio - Motorola P8190 Service Manual

Cellular Overview
Digital Cellular
frequency. The IF is processed in the IF strip,
which provides filtering and amplification.
A discriminator retrieves audio from the IF
and the varying voltages of the audio are used
to drive a speaker

TDMA Radio

TDMA radios use the same circuitry as ana-
log radios, for the most part, but also have
additional circuitry to convert analog audio
to digitized form and vice versa, and to se-
lect the appropriate time slot.
Figure 16. TDMA Radio
101010101010101010101
Processing
101
010101010101010101010
010
Network 101010101010101010101
101
010101010101010101010
010
101
A/D
Slot selector
20
Processing
Network
ZIF
D/A
Slot selector
© 2000 Motorola, Inc.
TDMA Timeport™ P8190