Digital PMR Radio Processor
CMX7131/CMX7141
History
Version Changes
Date
6
April 2014
Vocoder-related content was clarified throughout the document.
AMBE+2 now described as the default decoder throughout entire document
Section 6.5.11: Tx Sequencer description revised
Section 6.5.15, Figure 21: new graph replaces table
Section 8.1.24 - $C3 register description revised
Section 8.2.3 – P2.0 description now describes Rx audio pass-through
operation (b3)
Section 8.2.3, Figure 33: new graph replaces table
Section 9, Function Image Updates
Completely revised for FI-3.1 and NXDN operation
Updated RAMDAC and tone generator descriptions
Added RSSI - signal strength graph
Expanded description of Fine Level adjustment of outputs
Various typographical and editorial changes and update to version history.
Correction to FS2 detector operation in section 6.3.5
5
4
Sep 2013
Sep 2012
FS1 and FS2 bits changed to a single FS Det bit in sections 6.3.5, 10.1.25 and
10.1.32
Additional RAMDAC information in section 10.1.4
Corrected b3-0 order in Table 4 and section 10.1.22
Sync task removed from Table 5, section 10.1.22 and section 10.1.28
Added information about Abort/Reset in section 7.5.7
Clarification of BOOTEN states and corrections to RF Synthesiser
specification
Correction to SPI bus Chip Select pin definition.
Third party vocoder added and diagrams updated
CMX7131 features added
3
2
1
Sep 2011
July 2010
Mar 2009
C-BUS signal names standardised and reset conditions added
Original document, prepared for internal use.
This is Advance Information; changes and additions may be made to this specification. Parameters
marked TBD or left blank will be included in later issues. Items that are highlighted or greyed out should be
ignored. These will be clarified in later issues of this document.
Information in this datasheet should not be relied upon for final product design.
2014 CML Microsystems Plc
Page 6
D/7141_FI-3.x/6
CMLMICRO [ CML MICROCIRCUITS ]
