Technical data

USING THE UNIVERSAL DEVELOPER'S KIT

LZT 123 8020 R1A

12.5 RF Interface

A MMCX connector, J402, is provided on the Developer's board

and routed to a SMA connector, J401. This allows a standard

cellular antenna with SMA connector to be used if the module

has a non-SMA connector mounted on it. An MMCX to MMCX

RF Jumper is provided to connect from the module to J402.

12.6 Audio Interface

Analog audio is routed to/from the Developer Kit in two ways

and is controlled by switches S201 and S202:

1 Via a 2.5mm stereo jack at J201 (S201 set to “Pre-Amp” and

S202 is “ON”). Used with hands-free set.

2 Via ATMS and AFMS (S201 set to “Bypass” and S202 is

“OFF”).

3 The Gx-47/48 platform does not require the external pre-

amp. Set S201 to “Bypass” and S202 to “OFF”.

Analog audio is provided on pins 7 and 10 of the system

connector header as presented below:

Pin Signal Description

7 AFMS Audio Output From Module (referenced to AGND)

10 ATMS Audio Input to Module (referenced to AGND)

9 AGND Analog Reference

Digital audio is provided on pins 17, 18, 19 and 20 of the

system connector header. The application must ensure

providing the correct levels on the PCM signals according to the

Digital Audio section of the appropriate Integrator's Manual. The

PCM signals available in the system connector header are

presented below:

Pin Signal Description

17 PCMCLK PCM Clock Output from module.

18 PCMSYNC PCM Frame Sync Output from module.

19 PCMULD PCM Voice Input to module.

20 PCMDLD PCM Voice Output from module.