Gebruiksaanwijzing /service van het product MT90840 van de fabrikant Mitel
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2-231 Features • Time slot interchange function between eight pairs of ST -BUS/GCI/MVIP streams (512 channels) and parallel data por t • Programmab le data rates on the parallel port (19.44, 16.384, or 6.480 Mbyte/s) • Programmab le data rates on the serial por t (2.
MT90840 Preliminar y Inf or mation 2-232 Figure 2 - Pin Connections NC NC NC NC NC 74 56 58 60 62 64 68 70 72 66 12 28 26 24 22 18 16 14 20 32 30 54 10 8 6 4 2 84 82 80 78 76 34 36 38 40 42 44 46 48 5.
Preliminar y Inf or mation MT90840 2-233 Pin Description Pin # Name Description 84 100 34 3 DS/RD Data Strobe/Read (Input ). In Motorola m ultiplex ed-b us mode this pin is DS, an active high input which w orks with CS to enable read and write operation.
MT90840 Preliminar y Inf or mation 2-234 22 66 F0i/o Serial P ort Frame Synchronization (Bidirectional). This 8 kHz frame pulse signal indicates the TDM 125 µ sec fr ame boundar y on the serial data por t. This pin is compatible with both ST -B US/MVIP and GCI formatted framing signals.
Preliminar y Inf or mation MT90840 2-235 59 10 TRST T est Reset ( Input ). Asynchronously initializes the JT AG T AP controller , placing it in the T est-Logic-Reset state.
MT90840 Preliminar y Inf or mation 2-236 Functional Description The MT90840 Distributed Hyperchannel Switch is a large s witching, multiple xing, and rate-adapting de vice. The MT90840 bridges ser ial-b us telecom components, using the Mitel ST -BUS or other industr y-standard serial buses , onto a higher speed “backbone”.
Preliminar y Inf or mation MT90840 2-237 Figure 3 - Serial P ort Interface Functional Timing Figure 4 - P arallel Data P or t Functional Timing C4/8R1&2 Serial I/O 2 Mbps Serial I/O 4 Mbps Frame Boundary Established by F0 Ch. 31 Bit 1 Ch. 31 Bit 0 Ch.
MT90840 Preliminar y Inf or mation 2-238 an address-value in the path’ s Data Memor y . A given output time slot is controlled by prog ramming the Connection Memor y control-address with the address-value of the source input time slot.
Preliminar y Inf or mation MT90840 2-239 programmed to s witch parallel inputs to parallel outputs. F or each parallel output channel control-address, the Tx P ath Connection Memor y is programmed with the 12-bit address-v alue of the desired parallel input channel.
MT90840 Preliminar y Inf or mation 2-240 Register enables the internal divider , and the SPCK o output (and inter nal 4.096 MHz clocks) are driv en by the clock divided-do wn from PCKR. At 16.384 MHz, this is a simple divide-by-4, and the SPCK o output jitter will depend on the PCKR input jitter .
Preliminar y Inf or mation MT90840 2-241 streams, and trigger the PPCE interrupt bit. PPCE will be triggered by PPFRi moving from the e xpected time, b ut PPCE will not be triggered by a missing PPFRi. If the PPFRi input is held asser ted, the parallel I/O will “loc k up” and operation will be disrupted (including CPU access to the TPCM).
MT90840 Preliminar y Inf or mation 2-242 TM1. This allows f or fle xible round-trip data dela ys in star or ring type networks. An elastic buff er on the receive par allel por t compensates for the diff erence in phase between PPFRi/PCKR and F0i/C4.
Preliminar y Inf or mation MT90840 2-243 The transmit path does not pro vide an elastic buff er , and theref ore the ser ial por t cloc k must be tightly lock ed (in frequency) to the parallel por t cloc k (PCKR).
MT90840 Preliminar y Inf or mation 2-244 Timing Mode 3 (TM3) - Bus Slave Synchronous P arallel P or t With ST -BUS Clock Slav e Timing Mode 3 is used where the main TDM clock ref- erence resides on the parallel por t side of the system, and where the receive par allel por t and the transmit parallel por t are aligned.
Preliminar y Inf or mation MT90840 2-245 Timing Mode 4 (TM4) - P arallel Data Switching Timing Mode 4 is used to provide s witching of up to 2430 parallel input channels to the same number of parallel output channels. P arallel TDM data is clock ed in at PDi0-7 by PCKR, fr amed by PPFRi.
MT90840 Preliminar y Inf or mation 2-246 T able 1 - MT90840 Thr oughput Delay Summary Naming rules: ELD: ELastic Dela y , measured from PPFRi to F0i (4.4 to 129.4 µ sec). P/S:P arallel-to-Serial data path. Pi:P arallel Input channel time, e xpressed in delay after PPFRi (0 to 125 µ sec) .
Preliminar y Inf or mation MT90840 2-247 TPCM High location is output on the corresponding CT o pin once ev er y frame. See Figure 9. The control outputs can be used to control other de vices, such as buff ers, to allow sharing of the parallel por t data bus.
MT90840 Preliminar y Inf or mation 2-248 all 16 serial streams can be individually controlled, so that up to 512 channels can be either transmitted or received. As an e xample, if all DC bit locations of RPCM High are set HIGH, all 512 channels on ST o0-7 and STi0-7 will be configured as outputs.
Preliminar y Inf or mation MT90840 2-249 Figure 12a - 2.048 Mbps Add/Drop Mode TPDM Addressing Figure 12b - 2.048 Mbps Add/Drop Mode RPCM Addressing 4.096 Mbps Mode The 4.096 Mbps mode has 8 input and 8 output streams, and 64 channels per stream. Theref ore 3 bits are used to address the 8 streams, and 6 bits are used to address the 64 channels.
MT90840 Preliminar y Inf or mation 2-250 Figure 14a - 8.192 Mbps TPDM Addressing Figure 14b - 8.196 Mbps RPCM Addressing Micropr ocessor P or t An 8-bit multiple x ed parallel microprocessor por t is provided on the MT90840 to allo w an attached CPU to configure and read inter nal registers and memories.
Preliminar y Inf or mation MT90840 2-251 shor t, or a signal contention, pre vents the DT A pin from reaching a valid logic HIGH, it will contin ue to drive f or appro ximately 15 nsec before s witching to high-impedance.
MT90840 Preliminar y Inf or mation 2-252 the DT A pin will be asser ted (as the data is stored in the write-pipeline) but the ne xt CPU access will not see DT A asser ted. No clocks are necessar y f or register accesses (but if the write-pipeline is hung, the registers cannot be accessed).
Preliminar y Inf or mation MT90840 2-253 DR1-0 and FDC in the IMS register) bef ore programming the RPCM. b) The GPM Register is written. The CPU sets the Block-Prog ramming Enable (BPE) bit to HIGH and the Block-Prog ramming Data (BPD7-4) bits to the desired value .
MT90840 Preliminar y Inf or mation 2-254 I/O pin of the IC . The operation of the boundar y-scan circuitr y is controlled b y a T est Access P or t (T AP) Controller . T est Access P or t (T AP) The T est Access P or t (T AP) has five signals and provides access to the test logic defined b y the JT A G standard.
Preliminar y Inf or mation MT90840 2-255 T est Data Registers As specified in the IEEE 1149.1 Standard, the MT90840 JT AG interf ace contains two test data registers: • The Boundar y Scan Register consists of a series of Boundar y-Scan Cells arranged to f orm a scan path around the boundar y of the core logic of the MT90840.
MT90840 Preliminar y Inf or mation 2-256 Register Description Interface Mode Selection Register (IMS) - READ/WRITE 76543210 DR1 DR0 PPS1 PPS0 ODE 0 0 FDC DR1-0 Serial P or t Data Rate Selection. Select one of three different data rates at the serial inputs and outputs of the MT90840.
Preliminar y Inf or mation MT90840 2-257 General Purpose Mode Register (GPM) - READ/WRITE 76543210 BPD6 BPD5 BPD4 PPFP SPFP BPD7 DIN BPE BPD7-4 Block-Progr amming Data bits 7-4. These bits carr y the value to be loaded into the TPCM-High or RPCM-High memory when the Memor y Block-Programming f eature is activated.
MT90840 Preliminar y Inf or mation 2-258 This register selects which 128 byte page of which internal memor y will be accessed by the CPU when the address bit AD<7> is high. (When address bit AD<7> is low , the control registers are accessed.
Preliminar y Inf or mation MT90840 2-259 Internal Memory Description OE/CT o0 Output Enable. Pro vides per channel tristate control on the parallel por t side. It controls the MT90840 parallel output drivers to disable (tristate, when LO W) or enable (when HIGH) the transmission of data from the device .
MT90840 Preliminar y Inf or mation 2-260 MC Message Channel: The message channel contents are provided b y the CPU in bits AB0-7 in the Rx Path Connection Memory Low . If MC is HIGH, the contents of the corresponding location of RPCM Low are output on this serial por t channel.
Preliminar y Inf or mation MT90840 2-261 Applications Distributed Isoc hronous Netw ork Low latency isochronous bac kbones provide f or the deplo yment of systems that require cost effectiv e implementation, high bandwidth, predictable data transf er dela ys and direct synchronization with the wide area network.
MT90840 Preliminar y Inf or mation 2-262 synchronization scheme ma y be used in applications such as the proposed MVIP multi-chassis le v el 3 interf ace (MC-3 system) utilizing point-to-point or point-to-multipoint s witching connections.
Preliminar y Inf or mation MT90840 2-263 A C Electrical Characteristics - V oltages are with respect to ground (V SS ) unless otherwise stated. Characteristics Sym Min T yp ‡ Max Units T est Conditions 1 C4/8 Input - Clock P er iod: 4.096 MHz (2.048 & 4.
MT90840 Preliminar y Inf or mation 2-264 ‡ T ypical figures are at 25 ° C and are f or design aid only: not guaranteed and not subject to production testing. Figure 17 - Output T est Load 10 ST o Dela y from High-Z to Active 2.048 and 4.096 Mbps (TM2 &TM3) 2.
Preliminar y Inf or mation MT90840 2-265 Figure 18 - Serial P ort Timing for 2.048 Mbps Operation - TM2 (SFDi = 1) and TM1 C4/8R1 t frw STi0-7 STo0-7 (4.096 MHz) bit 7, ch. 0 bit 0, ch. 31 bit 7, ch. 0 bit 0, ch. 31 t stih t stis t clkh Serial Port with Negative Polarity F0 (ST-BUS) t sod t frh t frs t clk t clkl t T STo0-7 C4/8R1 (4.
MT90840 Preliminar y Inf or mation 2-266 Figure 19 - Serial P ort Timing for 2.048 Mbps - TM2 (SFDi = 0) and TM3 t sod STo0-7 SPCKo (4.096 MHz) STi0-7 t stis t stih F0o output bit 7, ch.
Preliminar y Inf or mation MT90840 2-267 Figure 20 - Serial P ort Timing for 4.096 Mbps Operation - TM2 (SFDi = 1) and TM1 STo0-7 C4/8R1 (4.096 MHz) STi0-7 F0i input bit 0, ch. 63 bit 7, ch. 0 bit 6, ch. 0 bit 7, ch. 0 STo0-7 C4/8R1 (4.096 MHz) STi0-7 F0i input bit 7, ch.
MT90840 Preliminar y Inf or mation 2-268 Figure 21 - Serial P ort Timing for 4.096 Mbps Operation - TM2 (SFDi = 0) and TM3 STo0-7 SPCKo (4.096 MHz) STi0-7 F0o output bit 7, ch. 0 bit 6, ch. 0 bit 7, ch. 0 STo0-7 SPCKo (4.096 MHz) STi0-7 F0o output bit7, ch.
Preliminar y Inf or mation MT90840 2-269 Figure 22 - Serial P ort Timing for 8.192 Mbps - TM1 and TM2 (SFDi = 1) Figure 23 - P er-Channel T ristate Characteristics at all Data Rates STo0-7 C4/8R1 (8.192 MHz) STi0-7 F0i input bit 0, ch.127 bit 7, ch. 0 bit 6, ch.
MT90840 Preliminar y Inf or mation 2-270 Figure 24 - Serial P ort Timing for 8.192 Mbps - Timing Modes 2 and 3 STo0-7 C4/8R1** (8.192 MHz STi0-7 F0o output bit 0, ch.127 bit 7, ch. 0 bit 6, ch. 0 bit 7 (8 kHz) Frame Sync with Positive Polarity (SPFP = 1) t stis t stih t df t df t sod t t t clkh t clk t clkl STo0-7 C4/8R1** (8.
Preliminar y Inf or mation MT90840 2-271 Figure 25 - Timing for the P arallel Port External Control Lines CT o0-3 Figure 26 - TM1 P arallel P or t T ransmit Timing (TM1 & PFDI = 1, PPFT is an inpu.
MT90840 Preliminar y Inf or mation 2-272 Figure 28 - P arallel P or t Receive Timing ‡ T ypical figures are at 25 ° C and are f or design aid only: not guaranteed and not subject to production testing.
Preliminar y Inf or mation MT90840 2-273 Figure 29 - P arallel P or t in Timing Mode 4 Figure 30 - Phase V ariation Between C4/8R1 & C4/8R2 and PCKT Inputs for TM1 Operation Figure 31 - Phase V ariation Between C4 and PCKR Inputs for TM2 Operation PPFRi PPFT PCKR TCP = 0 PPFT TCP = 1 Note: For the PPFT depicted above, PPFP = HIGH.
MT90840 Preliminar y Inf or mation 2-274 † Timing is over recommended temperature & po wer supply voltages . ‡ T ypical figures are at 25 ° C and are f or design aid only: not guaranteed and not subject to production testing.
Preliminar y Inf or mation MT90840 2-275 Figure 32 - Intel/National Multiplexed Bus Timing ALE AD0- AD7 CS RD WR DT A t alw t ads t adh DATA ADDRESS t alrd t csrw t dhr t dhw t csw t alwr t akd t ddr t akh 2.0V 0.8V 2.0V 0.8V 2.0V 0.8V 2.0V 0.8V 2.0V 0.
MT90840 Preliminar y Inf or mation 2-276 † Timing is over recommended temperature & po wer supply voltages . ‡ T ypical figures are at 25 ° C and are f or design aid only: not guaranteed and not subject to production testing.
Preliminar y Inf or mation MT90840 2-277 Figure 33 - Motorola Multiple xed Bus Timing CS DT A AD0-13 RD DS R/ W AS ADDRESS ADDRESS DATA DATA t rwh t rws t asw t dsh t ads t adh t dhw t dhr t css t csh t akd t akh t ddr 2.0V 0.8V 2.0V 0.8V 2.0V 0.8V 2.
MT90840 Preliminar y Inf or mation 2-278 Figure 34 - Boundary Scan T est Port Timing Figure 35 - RESET Timing A C Electrical Characteristics - Boundar y-Scan T est P or t and RESET Pin P arameter Symb.
Preliminar y Inf or mation MT90840 2-279 Figure 36 - 84 PLCC Mechanical Drawing Figure 37 - 100 Pin PQF Mechanical Dra wing F D 1 D H E 1 I A 1 A G D 2 E E 2 Dim Min Max A 0.165 (4.20) 0.200 (5.08) A 1 0.090 (2.29) 0.130 (3.30) D/E 0.185 (30.10) 1.195 (30.
MT90840 Preliminar y Inf or mation 2-280 Notes:.
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