MT9094AP Mitel, MT9094AP Datasheet
MT9094AP
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MT9094AP Summary of contents
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... Control Registers Timing Circuits LCD Driver Converter S12 BP WD PWRST IC Figure 1 Functional Block Diagram MT9094 FAMILY ISSUE 2 May 1995 Ordering Information MT9094AP 44 Pin PLCC -40°C to +85°C The Filter/Codec A Digital Signal Processor 2 -CMOS MIC- MIC+ Transducer Interface M- M+ HSPKR+ HSPKR- SPKR+ ...
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MT9094 DATA 2 DATA 1 Pin Description Pin # Name 1 M+ Non-Inverting Microphone (Input). Non-inverting input to microphone amplifier from the handset microphone Connect. No internal connection to this pin Bias Voltage (Output). (V ...
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Pin Description (continued) Pin # Name 14 DATA 2 Serial Data Transmit alternate mode of operation, this pin is used for data transmit from MT9094. In the default mode, serial data transmit and receive are performed on the ...
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MT9094 Overview The Functional Block Diagram of Figure 1 depicts the main operations performed within the DPhone-II. Each of these functional blocks will be described in the sections to follow. This overview will describe some of the end-user features which ...
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On PWRST (pin 6) the Filter/CODEC defaults such that the side-tone path, dial tone filter and 400Hz transmit filter are off, all programmable gains are set to 0dB and µ-Law companding is selected. Further, the Filter/CODEC is powered down due ...
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MT9094 included. This is a second implementation with a corner frequency at 25kHz. Attenuation is better than 32dB at 256 kHz and less than 0.01dB within the passband. An optional 400Hz high-pass function may be included into the transmit path ...
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Note: For the DSP to function it must be selected to operate, in conjunction with the Filter/Codec, in one of the B-Channels. Therefore, B-Channel enable bits must be set (see Timing Control, address 15h : bits CH Power Up reset ...
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MT9094 Table 1 gives the standard DTMF frequencies, the coefficient required to generate frequency, the actual frequency generated and the percent deviation of the generated tone from the nominal. Tone Ringer and Gain Control Program A locally generated alerting (ringing) ...
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... Transducer Control Register (address 0Eh). The nominal gain for this amplifier is 0.2dB. C-Channel Access to the internal control and status registers of Mitel basic rate, layer 1, transceivers is through the ST-BUS Control Channel (C-Channel), since direct microport access is not usually provided, except in the case of the SNIC (MT8930). The DPhone-II ...
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... A serial link is required for the transport of data between the DPhone-II and the external digital transmission device. The DPhone-II utilizes the ST-BUS Semiconductor. Refer to Mitel Application Note MSAN-126. The DPhone-II ST-BUS consists of output and input serial data streams, DSTo and DSTi respectively, a synchronous clock signal C4i, and a framing pulse F0i ...
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... Channel 1 conveys the information for Mitel’s layer 1 transceiver. The full 64kb/s bandwidth is available and is assigned according to which transceiver is being used. Consult the data sheet for the selected transceiver for its bit definitions and order of bit transfer. When this bit is high register data is transmitted on DSTo ...
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MT9094 Watchdog To maintain program integrity an on-chip watchdog timer is provided for connection microcontroller reset pin. The watchdog output WD (pin 17) goes high while the DPhone-II is held in reset via the PWRST (pin 6). Release of PWRST ...
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Register Summary This section contains a complete listing of the DPhone-II register addresses, the control/status bit mapping associated with each register and a definition of the function of each control/status bit. FCODEC Gain Control Register 1 - RxFG RxFG 2 ...
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MT9094 Transducer Control Register DIAL PuFC Tfhp PuFC When high, the Filter/CODEC is powered up. When low, the Filter/CODEC is powered down. If PuFC, SPKR EN and HSSPKR EN are all low then the VRef/VBias circuit ...
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Watchdog Register - - - WATCHDOG RESET WORD - XXX01010 LCD Segment Enable Register Twelve segment control bits used for the LCD outputs. When high the respective ...
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MT9094 Timing Control Register - - - All bits active high and Channels 2 and 3 are the B1 and B2 channels, respectively. PCM associated with the DSP, Filter/CODEC and trans- ...
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Receive Gain Control Register - AUTO AUTO When high autonulling of the transmit PCM is enabled. When low, autonulling is disabled. This bit is used in conjunction with the PS2 - PS0 bits of the DSP ...
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MT9094 DSP Control Register PS2 PS1 PS0 7 6 OPT: When high, the tone ringer is in New Call tone mode. When low the normal tone ringer program is executed. RxMUTE: This bit when high turns off the receive PCM ...
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Tone Coeff Register 1-DTMF or Tone Ringer This register is used to program the low-group frequency of the DTMF program. The tone coefficient is calculated as follows: COEF = 0.128 x Frequency where: Frequency ...
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... Figure 8 for the transmit interface. In this case the dynamic range of the MT9094 is reduced by half. In both figures the output drivers are connected in a fully differential manner. The MT9094 is a member of the Mitel family of digital terminal equipment components. There are two + - ...
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R 0 DSTi ST-BUS 8 DSTo Port to 9 C4i Transmission Device 10 F0i SCLK 14 Serial DATA2 Microport 15 INTEL DATA1 MCS- ...
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MT9094 LTx CCITT ISDN Reference Point S Interface 5 Volts VBias Converter LRx Figure 9 - CCITT ISDN Voice/Data Terminal Equipment - TE1 5 volts CONVERTER Lin Twisted Pair Lout to Central PBX Figure ...
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Programming Examples Some examples of the programming steps required to set-up various telephony functions are given. Note that these steps are from the power-up reset default Standard Full-duplex handset call Description select B-Channel of operation reset DSP set Rx gain ...
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MT9094 Generate DTMF tones Description select B-Channel of operation reset DSP set Rx DTMF gain (ie -20 dBm0) set Tx audio gain (ie 0dB) set Tx DTMF gain (ie -4dBm0) write tone coefficient 1 write tone coefficient 2 start DTMF ...
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Absolute Maximum Ratings Parameter 1 Supply Voltage 2 Voltage on any I/O pin 3 Current on any I/O pin (transducers excluded) 4 Storage Temperature 5 Power Dissipation (package) 6 Static Discharge 7 Latch-up Current Recommended Operating Conditions Characteristics 1 Supply ...
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MT9094 DC Electrical Characteristics otherwise stated. Characteristics 1 Input HIGH Voltage TTL inputs 2 Input LOW Voltage TTL inputs 3 VBias Voltage Output 1 4 Input Leakage Current 5 Positive Going Threshold Voltage (PWRST only) Negative Going Threshold Voltage (PWRST ...
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AC Characteristics for A/D (Transmit) Path CODEC 0.5 volts and V = 2.5 volts). All parameters pertain exclusively to the Filter/CODEC except absolute half-channel gain Ref Bias and transmit idle channel noise. Characteristics 1 Analog input equivalent ...
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MT9094 † AC Characteristics for D/A (Receive) Path (V = 0.5 volts and V = 2.5 volts). All parameters pertain exclusively to the Filter/CODEC except absolute gain and receive idle Ref Bias channel noise. Characteristics 1 Analog output at the ...
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AC Electrical Characteristics Characteristics 1 New Call Tone Output voltage (SPKR+ to SPKR-) † AC Electrical Characteristics are over recommended temperature range & recommended power supply voltages. ‡ Typical figures are and are for design aid only: ...
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MT9094 AC Electrical Characteristics Characteristics 1 C4i Clock Period 2 C4i Clock High Period 3 C4i Clock Low Period 4 C4i Clock Transition Time 5 F0i Frame Pulse Setup Time 6 F0i Frame Pulse Hold Time 7 F0i Frame Pulse ...
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AC Electrical Characteristics Characteristics 1 Receive data setup 2 Receive data hold 3 Transmit data delay from clock falling edge 4 High Z to valid data from SCLK falling edge 5 Valid data to high Z from CS rising edge ...
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MT9094 NOTES: 7-76 ...