? 2013 cml microsystems plc 1 product preview CMX7161 tdma digital radio processor digital mobile radio (dmr) based systems CMX7161 brief descripton the CMX7161 is a digital radio processor intended for use in two - slot tdma systems. function image 7161fi - 1.x implements a high performance radio modem specifcally targeted at the etsi ts 102 361 standard for digital mobile radio (dmr). 7161 fi - 1.x implements a half - duplex digital radio modem using root - raised - cosine ( ? =0.2) 4 - fsk modulation in a 12.5khz channel. slot timing and synchronisation are handled automatically by the device. an integrated analogue interface (with no requirement for external codecs) supports direct connection to the rf receive chip cmx994 direct conversion receiver and in tx, a two - point modulation transmiter with a few external components can be implemented. intelligent auxiliary adc, dac and gpio sub - systems are provided to minimise required host interaction and host i/o resources. two synthesised system clock generators develop clock signals for of - chip use. the c - bus/spi master interface expands host c - bus/spi ports to control external devices. the CMX7161 operates from a 3.0v - 3.6v supply and is available in small 64 - pin vqfn and lqfp packages. the device uses cmls proprietary firmasic ? component technology. on - chip sub - systems are confgured by a function image? data fle that is uploaded during device initialisation to defne the device's function and feature set. pp/7161/1 september 2013 introducton 2 - slot tdma is the digital radio technology chosen by many business critical pmr/lmr users in the market today. dmr has become a force within the digital radio market, with its strong foundation based on the etsi dmr standard. a number of 2 - slot tdma systems are currently being implemented around the world, these include dmr, pdt and apco p25 phase 2. all these systems have the essential market drivers: small size, high performance, low cost and fast time to market. in many cases the sofware defned radio (sdr)/radio platform approach is the chosen route to market in order to achieve the core requirements. the CMX7161 digital radio processor, combined with the cmx994 direct conversion receiver, provides the ultimate solution to achieve the 2 - slot tdma market objectives. the CMX7161 and cmx994 are supported by the de9943 sdr demonstrator board that provides a fast route to product evaluation and system development. applicatons ? 2 - slot tdma digital mobile radio ? etsi ts 102 361 digital mobile radio (dmr) ? police digital trunking (pdt) radio ? auxiliary functions: ? two programmable system clock outputs ? four adcs with six selectable input paths ? spi thru - port for interfacing to synthesisers and other serially controllable devices ? four dacs ? fifo based c - bus interface for efcient data transfer ? small 64 - pin vqfn/lqfp packages features ? 9600bps 4fsk modem ? hard/sof decision data bits ? root - raised - cosine pulse shaping ? automatic frame sync detection ? automatic tracking of symbol timing and input i/q dc ofsets ? embedded codecs (analogue to digital conversion) ? ramdac capability for pa ramping control ? two - point modulation analogue outputs ? direct connection to cmx994 direct conversion receiver ic small 64 - pin vqfn/lqfp c m x 7 1 6 1 t d m a d i g i t a l r a d i o p r o c e s s o r v o c o d e r h o s t m i c r o c - b u s c m x 9 9 4 d i r e c t c o n v e r s i o n r e c e i v e r v c o t x r x p a c o d e c a u x a d c s g p i o s m e m o r y c o d e c d i s p l a y k e y p a d i i n p u t q i n p u t 2 p o i n t m o d d m r m o d e m a u x d a c s s y s t e m c l o c k s
? 2013 cml microsystems plc 2 product preview CMX7161 tdma digital radio processor key product features descriptons tx functons: ? two - point modulation analogue outputs ? root - raised - cosine ( ? =0.2) pulse shaping ? ramdac capability for pa ramping control ? tx trigger feature allowing precise control of burst start time ? tx burst sequence for automatic ramdac ramping and hardware switching rx functons: ? i/q analogue inputs ? rx channel fltering and root - raised - cosine ( ? =0.2) pulse shaping ? data returned as hard - decision bits or 4 - bit sof - decision llr metrics ? automatic frame sync detection ? automatic tracking of symbol timing and input i/q dc ofsets ? rssi indication slot tming functons: ? 30ms slot format (264 - bit bursts) ? internal slot clock and timing maintenance ? automatic synchronisation to received channel ? automatic sequencing of hardware control auxiliary functons: ? two programmable system clock outputs ? four auxiliary adcs with six selectable input paths ? spi thru - port for interfacing to synthesisers and other serially controllable devices ? four auxiliary dacs, one with built - in programmable ramdac host interface: ? optimised c - bus (4 - wire, high speed synchronous serial command/data bus) interface to host for control and data transfer, including streaming c - bus for efcient data transfer ? open drain irq to host ? four gpio pins ? serial memory or c - bus (host) boot mode. g p i o a g p i o b g p i o c g p i o d d a t a d e m o d u l a t o r d a t a m o d u l a t o r t r a n s m i t f u n c t i o n s m o d 1 p m o d 2 p a u x a d c 1 a u x a d c 2 a u x a d c 3 a u x a d c 4 a u x d a c 1 c l k b o o t e n 1 b o o t e n 2 s y s c l k 1 s y s c l k 2 a u x d a c 2 a u x d a c 3 a u x d a c 4 a v d d v b i a s a v s s m i s o m o s i a u x i l i a r y m u l t i p l e x e d a d c s a u x i l i a r y d a c s s y s t e m c l o c k s g p i o w i t h o / p s e q u e n c e r f i c o n f i g u r e d i / o d a c 1 d a c 2 d a c 3 d a c 4 r a m p - p r o f i l e r a m m u x a d c 1 t h r e s h o l d s a v e r a g i n g s y s t e m c l o c k d i v 1 s y s t e m c l o c k d i v 2 r e g i s t e r s i r q n r d a t a c s n c d a t a s c l k p o w e r c o n t r o l s p i t h r u p o r t b i a s d v d d d v c o r e d v s s r e g . c l o c k d i s t r i b u t i o n b o o t c o n t r o l a u x i l i a r y f u n c t i o n s r e c e i v e f u n c t i o n s s s o u t 0 a d c 2 t h r e s h o l d s a v e r a g i n g a d c 3 t h r e s h o l d s a v e r a g i n g a d c 4 t h r e s h o l d s a v e r a g i n g r x d a t a f i f o t x d a t a f i f o m a i n c l o c k p l l s y s c l k i n s y s t e m c l o c k p l l c - b u s i n t e r f a c e s s o u t 1 s s o u t 2 c - b u s / s p i t h r u c o n t r o l a g c c o n t r o l l e r f l a s h b o o t h o s t t h r u c o m m a n d s c h a n n e l f i l t e r c h a n n e l f i l t e r m o d 1 n m o d 2 n q i n p u t p q i n p u t n i i n p u t p i i n p u t n r e s e t n d a c r e f a d c r e f d e v i c e r e s e t q i r s s i
? 2013 cml microsystems plc 3 product preview CMX7161 tdma digital radio processor evaluaton support the de9943 is a compact demonstration/evaluation platform for 2 - slot tdma digital radio designs incorporating the CMX7161 tdma digital radio processor, the cmx994 direct conversion receiver and the cmx7262 twelp professional radio vocoder. the board can be used to demonstrate a complete rf transceiver and baseband function supporting a direct conversion receiver and vco 2 - point modulation transmiter. the de9943 features a built in keyboard, display, microphone and speaker and so can be used to demonstrate dmr peer - to - peer operation in a standalone confguration. the board has an arm processor which handles initial board power up and loading of the function image? data fles to the CMX7161 and cmx7262. once the system is powered up, the processor will handle basic radio functionality (channel selection etc) and baseband control, allowing demonstration of a simple voice call and data transfer de9943 demonstrator board c m x 7 1 6 1 h o s t u p p o w e r a m p l i f i e r r e f e r e n c e ( e . g v c t c x o ) v c o p l l t x / r x m o d 2 i i n p u t q i n p u t c o n t r o l v o l t a g e i n p u t r a m d a c ( a u x d a c 1 ) p a g a i n c o n t r o l 2 x a d c 2 x d a c t h r u c - b u s 4 g p i o g p i o a ( r x e n a b l e ) , g p i o b ( t x e n a b l e ) m o d 1 l n a v c o 1 / 6 / 4 o r / 2 c - b u s c o n t r o l i n t e r f a c e i c h a n n e l q c h a n n e l p l l / 6 / 4 / 2 / 1 a b c d c m x 9 9 4
? 2013 cml microsystems plc 4 product preview CMX7161 tdma digital radio processor electrical specifcaton summary operatng limits min typ max unit supply voltage: dv dd C dv ss 3.0 3.3 3.6 v dv core C av core 1.7 1.8 1.9 v operating temperature - 40 - +85 c external clock frequency 3.0 - 19.2 mhz packaging 64 - pin vqfn mechanical outline (q1) order as part no. CMX7161q1 phone: fax: email sales: email tech support: +44 (0) 1621 875500 +44 (0) 1621 875600 sales@cmlmicro.com techsupport@cmlmicro.com +1 336 744 5050 800 638 5577 +1 336 638 5577 us.sales@cmlmicro.com us.techsupport@cmlmicro.com +65 62 888129 +65 62 888230 sg.sales@cmlmicro.com sg.techsupport@cmlmicro.com www.cmlmicro.com search for: cmlmicro further informaton links >> cml product selector >> CMX7161 digital radio processor >> cmx994 direct conversion receiver >> cmx7262 profession radio vocoder >> de9943 sdr demonstrator 64 - pin lqfp mechanical outline (l9) order as part no. CMX7161l9
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