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MT91L61ASR Datasheet(PDF) 4 Page - Zarlink Semiconductor Inc |
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MT91L61ASR Datasheet(HTML) 4 Page - Zarlink Semiconductor Inc |
4 / 33 page MT91L60/61 Data Sheet 4 Zarlink Semiconductor Inc. Overview The 3 V Multi-featured Codec (MFC) features complete Analog/Digital and Digital/Analog conversion of audio signals (Filter/Codec) and an analog interface to a standard handset transmitter and receiver (Transducer Interface). The receiver amplifier is capable of driving a 300 ohm load. Each of the programmable parameters within the functional blocks is accessed through a serial microcontroller port compatible with Intel MCS-51®, Motorola SPI® and National Semiconductor Microwire® specifications. These parameters include: gain control, power down, mute, B-Channel select (ST-BUS mode), C&D channel control/access, law control, digital interface programming and loopback. Optionally the device may be used in a controllerless mode utilizing the power-on default settings. 12 14 Din Data Input. A digital input for 8 bit wide channel data received from the Layer 1 transceiver. Data is sampled on the falling edge of the bit clock during the timeslot defined by STB, or according to standard ST-BUS timing. Input level is CMOS compatible. 13 15 STB/F0i Data Strobe/Frame Pulse (Input). For SSI mode this input determines the 8 bit timeslot used by the device for both transmit and receive data. This active high signal has a repetition rate of 8 kHz. Standard frame pulse definitions apply in ST- BUS mode. CMOS level compatible input. 16 STBd/F0 od (MT91L6 1 only) Delayed Frame Pulse Output. In SSI mode, an 8 bit wide strobe is output after the first strobe goes low. In ST-BUS mode, a frame pulse is output after 4 channel timeslots. 14 17 CLOCKin Clock (Input). The clock provided to this input pin is used for the internal device functions. For SSI mode connect the bit clock to this pin when it is 512 kHz or greater. Connect a 4096 kHz clock to this input when the available bit clock is 128 kHz or 256 kHz. For ST-BUS mode connect C4i to this pin. CMOS level compatible. 15 18 VDD Positive Power Supply (Input). Nominally 3 volts. 16 19 HSPKR- Inverting Handset Speaker (Output). Output to the handset speaker (balanced). 17 20 HSPKR+ Non-Inverting Handset Speaker (Output). Output to the handset speaker (balanced). 18 22 VSSA Analog Ground (Input). Nominally 0 volts. 19 23 M- Inverting Microphone (Input). Inverting input to microphone amplifier from the handset microphone. 20 24 M+ Non-Inverting Microphone (Input). Non-inverting input to microphone amplifier from the handset microphone. 3,9, 16,21 NC No Connect. (24 Packages only). Pin 16 is NC for MT91L60. Pin Description (continued) Pin # 20 Pin24 Pin Name Description |
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