User's Manual

SC14CVMDECT Cordless Voice Module
© 2011 SiTel Semiconductor B.V. Company Confidential 12 August 19, 2011 v1.2.1
3.5 FIXED PART CONFIGURATION
A Fixed Part configuration with SC14CVMDECT
requires additional external parts as shown in Figure 4.
.
Table 3 provides the overview of required and
available interfaces for a basic or a feature rich
cordless FP with the SC14CVMDECT.
.
A fixed part supports following main functional
features:
•Conferencing (currently not supported*)
•Intercom
•Custom Ringtones (currently not supported*)
•Earpiece, handsfree and headset.
•Automatic headset detection (currently not
supported*)
Figure 4 FP Configuration
SC14CVMDECT
(supported in future versions)
(optional)
Loudspeaker
MIC2
Earpiece
MCU
(handset speaker)
Supply
Ports
Headset
Regulator
PCM
Analog frontend
can be used for
PSTN line interface
UART
(optional)
Table 3: FP Hardware support overview
Item Supported Remark
Supply Regulator No Use external 3.3V LDO.
Keypad No on external MCU
Display No on external MCU
IO Ports Yes 4 free port pins
PCM interface Yes 4x16 bits, 8,16 kHz, strobes 1,8, 16, 32 bits
PCM voice coding
formats
Yes uLaw (64kbits/s), Alaw (64kbits/s), G.726 ADPCM (32kbits/s), G.722
ADPCM (64kbits/s), Linear (128kbits/s)
UART Yes 9600-115.2kbaud, used for AT-command
Headset detection Yes
Headset earpiece Yes Connected to LSRp,LSRn
Headset Microphone Yes Connected to MICp
Handsfree Microphone Yes Connected to MICh
Handsfree speaker Yes Connected to PAOUTP/n (No SW support)
PSTN Line interface Yes CID, Ring detection, Line-in, Linout, Line reversal, paralle set detection
(SW On request)
Radio Yes Integrated with two antenna’s