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PDF CMX7241 Data sheet ( Hoja de datos )
| Número de pieza | CMX7241 | |
| Descripción | PMR Common Platform Processor | |
| Fabricantes | Consumer Microcircuits Limited | |
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CML Microcircuits
COMMUNICATION SEMICONDUCTORS
CMX7241/CMX7341
PMR Common Platform
Processor
D7241_7341_FI-1.x/4 February 2015
DATASHEET
Advance Information
7241FI-1/7341FI-1.x: dPMRTM and Analogue PMR Processor with Rx I/Q Support
Features
Auto detect of Digital and Analogue Receive
o Digital PMR Functions:
dPMRTM (ETSI TS 102 658) Compliant
Air Interface Physical Layer (Layer 1)
Air Interface Data Link Layer (Layer 2)
Mode 1: peer-to-peer mode
Mode 2: peer-to-peer mode with repeater
operation
Mode 3: trunked mode support
Status, Type 1, Type 2 and Packet Data
o Tx Sequencer
o Analogue PMR EN 300 086 / TIA 603D
Voice processing
De-emphasis / Pre-emphasis
Tx Limiter and splatter filter
Voice Scrambler
Voice Compander
CTCSS and DCS generation and detection
Support for external CTCSS and DCS
Selcall generation and detection
DTMF generation and detection
1200/2400 bps FFSK modem (MPT1327
compatible)
Additional Features
2 Auxiliary ADCs (4 Multiplexed Inputs)
4 Auxiliary DACs
2 Auxiliary System Clock Outputs
Tx Outputs for Two-point or I/Q Modulation
Rx Inputs for Limiter/discriminator or CMX994
Direct Conversion (I/Q) Receiver
C-BUS serial interface to CMX994 transceiver
o Vocoder Management and Control (CMX6x8
RALCWI Vocoder or CMX7262 TWELP Vocoder)
o Voice Codec supports external vocoders
(SPI/PCM/I2S compatible - e.g. AMBE+2)
o C-BUS Serial Interface to Host micro
o Flexible Powersave Modes
o Low-power (3.3V) Operation
o Dedicated hardware reset pin
o Single-ended inputs (CMX7241)
o Differential inputs (CMX7341)
o Available in LQFP or VQFN Packages (CMX7341
– VQFN only)
Applications
Multi-mode PMR radio
FDMA digital PMR
Analogue PMR
RF Transmit
VCO Modulator
RF Receive
Discriminator
or
Direct Conversion
Receiver CMX994
Rx and Tx Enable
System clocks
GPIO
Reference clock
Tx PA ramp
DAC outputs
ADC inputs
3.0V to 3.6V
CMX7241/CMX7341
PMR Common
Platform Processor
Vocoder
CMX6x8 or
CMX7262
or
Third-Party Vocoder
C-BUS
Host µC
Datasheet
User
Manual
2015 CML Microsystems Plc
1 page  
PMR Common Platform Processor
CMX7241/CMX7341
6.17 Signal Level Optimisation ........................................................................................... 78
6.17.1 Transmit Path Levels ........................................................................................... 78
6.17.2 Receive Path Levels ............................................................................................ 79
6.18 Tx Spectrum Plots ...................................................................................................... 80
7 Performance Characteristics................................................................................................ 81
7.1 Electrical Performance ............................................................................................... 81
7.1.1 Absolute Maximum Ratings ................................................................................. 81
7.1.2 Operating Limits ................................................................................................... 82
7.1.3 Operating Characteristics .................................................................................... 83
7.1.4 Parametric Performance ...................................................................................... 90
7.2 C-BUS Timing............................................................................................................. 91
7.3 Packaging ................................................................................................................... 93
Table
Page
Table 1 Definition of Power Supply and Reference Voltages ....................................................... 11
Table 2 Recommended External Components ............................................................................. 13
Table 3 Recommended External Components when using CMX994 .......................................... 19
Table 4 Serial Port Assignments ............................................................................................... 19
Table 5 CMX994 Connections .................................................................................................... 25
Table 6 dPMR Frame Format - Call set-up, no ACK .................................................................... 32
Table 7 dPMR Frame Format - Call set-up with ACK................................................................... 32
Table 8 Xtal/Clock Frequency Settings for Program Block 3........................................................ 36
Table 9 BOOTEN Pin States ........................................................................................................ 39
Table 10 CMX6x8/CMX7262 Vocoder Connections..................................................................... 44
Table 11 DVSI Vocoder Connections ........................................................................................... 46
Table 12 Device Mode Selection .................................................................................................. 48
Table 13 dPMR Modem Control Selection.................................................................................... 49
Table 14 Analogue Mode Selection .............................................................................................. 49
Table 15 Frequency Response for Rx Pass-through Mode.......................................................... 52
Table 16 C-BUS Data Registers ................................................................................................... 53
Table 17 DCS codes and values ................................................................................................ 67
Table 18 CTCSS codes and values ........................................................................................... 69
Table 19 Data Frequencies for MPT1327 mode ....................................................................... 70
Table 20 Selcall Tones................................................................................................................ 72
Table 21 Alternative Selcall Tone Sets ..................................................................................... 73
Table 22 DTMF Tone Pairs ......................................................................................................... 74
Table 23 DTMF Twist.................................................................................................................... 74
Figure
Page
Figure 1 CMX7241/CMX7341 Block Diagram ................................................................................ 8
Figure 2 CMX7241 (L4 and Q3) Recommended External Components ...................................... 12
Figure 3 CMX7341 (Q3) Recommended External Components .................................................. 13
Figure 4 CMX7241 (L4/Q3) Power Supply and De-coupling ........................................................ 15
Figure 5 CMX7341 (Q3) Power Supply and De-coupling ............................................................. 16
2015 CML Microsystems Plc
Page 5
D/7241_7341_FI1.x/4
5 Page 
PMR Common Platform Processor
CMX7241/CMX7341
CMX7241 CMX7341
48-pin
Q3/L4
48-lead
Q3
45 45
46 46
47 47
Pin
Name
DVSS
SCLK
SYSCLK2
48 48
CSN
Type
Description
PWR Digital ground
IP Serial clock input from the µC
Host C-BUS
OP Synthesised Digital System Clock 2
Chip Select input from the µC
IP
(no internal pullup on this input)
Host C-BUS
Exposed Exposed
Metal Pad Metal Pad SUBSTRATE
The central metal pad (which is exposed on Q3 package
~ only) must be connected to analogue ground (AVSS).
No other electrical connection is permitted.
Note 1:
IP
OP
BI
TS OP
PWR
NC
=
=
=
=
=
=
Colour Definitions:
Input (+ PU/PD = internal pullup / pulldown resistor)
Output
Bidirectional
3-state Output
Power Connection
No Connection - should NOT be connected to any signal.
= Aux SPI/C-BUS
= Host C-BUS
= Analogue Inputs/Outputs
= ADCs/DACs
Note 2: In CMX7341 only, this is a dual-purpose pin which, for some FIs, may have an alternative
configuration. However for FI-1, this pin ONLY functions as DAC3.
3.1 Signal Definitions
Table 1 Definition of Power Supply and Reference Voltages
Signal
Name
Pins
Usage
AVDD
DVDD
VDEC
VBIAS
AVSS
DVSS
AVDD
DVDD
VDEC
VBIAS
AVSS
DVSS
Power supply for analogue circuits
Power supply for digital circuits
Power supply for core logic, derived from DVDD by on-chip regulator
Internal analogue reference level, derived from AVDD
Ground for all analogue circuits
Ground for all digital circuits
2015 CML Microsystems Plc
Page 11
D/7241_7341_FI1.x/4
11 Page | ||
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| PDF Descargar | [ Datasheet CMX7241.PDF ] | |
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