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PDF CMX7141 Data sheet ( Hoja de datos )
| Número de pieza | CMX7141 | |
| Descripción | Digital PMR Processor dPMR | |
| Fabricantes | CML Microsystems Plc | |
| Logotipo |  |
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CMX7131/CMX7141
CML Microcircuits
Digital PMR Processor
COMMUNICATION SEMICONDUCTORS
dPMR
D/7131/41_FI-1.0/7 October 2009
DATASHEET
Advance Information
7131/7141FI-1.x: dPMR Baseband Data Processor with Auxiliary System Clocks,
ADCs and DACs
Features
• Digital PMR
• dPMR (ETSI TS 102 490) Compliant
• Air Interface Physical Layer (Layer 1)
• Air Interface Data Link Layer (Layer 2)
• 4FSK Modem
• 4.8 and 9.6 kbps Data Rates
• Soft-decision Data Output Option
• AFSD (Automated Frame Sync Detection)
• Raw Data Mode
• Vocoder Connectivity
• Vocoder Management and Control
• Vocoder Data Transport
• 2 Auxiliary ADCs (4 Multiplexed Inputs)
• 4 Auxiliary DACs
• 2 Auxiliary System Clock Outputs
• Tx Outputs for Two Point or I/Q Modulation
• Flexible Powersave Modes
• Available in Small LQFP or VQFN Packages
• Low-power (3.3V) Operation
• C-BUS Serial Interface to Host µController
• Two RF Synthesisers (CMX7131 only)
DAC outputs ADC inputs
3.0V to 3.6V
Modulator
Discriminator
RF RF Synthesiser 1
RF Synthesiser 2
CMX7131 only
RxENA
TxENA
GPIO
System Clock 1
System Clock 2
Reference
Clock
CMX7131/7141
Digital PMR Processor
Built on FirmASIC® technology
CMX618 Vocoder
Host µC
This document contains:
Datasheet
User
Manual
© 2009 CML Microsystems Plc
1 page  
Digital PMR Radio Processor
www.DataSheet4U.com
CMX7131/CMX7141
Figure 14 FI Loading from EEPROM ............................................................................................ 29
Figure 15 Tx Data Flow (Raw Data Mode) ................................................................................... 34
Figure 16 Rx Data Flow (Raw Data Mode)................................................................................... 36
Figure 17 AuxADC IRQ Operation................................................................................................ 43
Figure 18 Example RF Synthesiser Components ........................................................................ 44
Figure 19 Single RF Synthesiser Block Diagram ......................................................................... 45
Figure 20 Digital Clock Generation Schemes............................................................................... 47
Figure 21 Tx Modulation Spectra - 4800bps................................................................................. 49
Figure 22 Tx Modulation Spectra - 9600bps................................................................................. 49
Figure 23 C-BUS Timing............................................................................................................... 60
Figure 24 Mechanical Outline of 64-pin VQFN (Q1)..................................................................... 61
Figure 25 Mechanical Outline of 64-pin LQFP (L9) ...................................................................... 61
Figure 26 Mechanical Outline of 48-pin LQFP (L4) ...................................................................... 62
Figure 27 Mechanical Outline of 48-pin VQFN (Q3)..................................................................... 62
Information in this data sheet should not be relied upon for final product design. It is always recommended
that you check for the latest product datasheet version from the CML website: [www.cmlmicro.com].
1.1 History
Version
7
6
5
4
Changes
• 3.1 added
• 6.2 (Device Control) revised
• 6.3 (dPMR description) revised
• 7.3 Company standard text and diagrams used
• 7.4 6x8 supported modes clarified
• 7.5.6 PRBS pattern conforms to EN 300 113
• 7.6.4 Addition of “silence” payload at Vocoder start-up
• 7.11 references to RF “channel” replaced by RF “Synthesiser”
• CMX7131 features added
• Modulation Diagram updated to latest (fig 9)
• Note added that 9600bps mode does not support automated CMX6x8
operation (6.3)
• C-BUS timing diagram updated to latest (fig 23)
• RAMDAC timing updated to latest
• GPIO1&2 defined as Rx and Tx Enable
• C-BUS signal names standardised
• Contact details updated
• Document style normalised
• Slow data support for Type 1 and Type 2 data modes
• BCD wildcard reporting added
• Additional Binary Group call ID’s added
• FS detect flow chart and text added (Normal and Late Entry Calls)
• Internal processing block diagram added
• Slow Data IRQ added
• Parametric specifications clarified
• Slow Data in voice mode added
• Corrected AuxADC conversion time
• Extended xtal flow to 3MHz
• Fine Input Attenuation removed
Date
06.10.09
21.4.09
8.5.09
29.6.09
10.11.08
22.07.08
© 2009 CML Microsystems Plc
Page 5
D/7131/41_FI-1.0/7
5 Page 
Digital PMR Radio Processor
4 External Components
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CMX7131/CMX7141
Figure 2 CMX7141 Recommended External Components
© 2009 CML Microsystems Plc
Page 11
D/7131/41_FI-1.0/7
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CMX7141.PDF ] | |
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