Voice Processor with Dual Narrow Band Codecs T/R

The ZL38012 is a hardware platform designed to support advanced acoustic echo canceller (with noise reduction) firmware applications available from Zarlink Semiconductor. These applications are resident in external memory and are down-loaded by the ZL38012 resident boot code during initialization. The DSP Core can process up to two 8-bit audio channels or two 16-bit audio channels. These audio channels may originate and terminate with the ?? CODECs, or be communicated to and from the DSP Core through the PCM/ the I²S port.

• 100 MHz (200 MIPs) Zarlink voice processor with hardware accelerator.
• Dual 8 kHz sampling ?? ADCs with input buffer gain selection
• Dual 8 kHz ??DACs with internal output driver
• Dual function Inter-IC Sound (I²S) port or TDM Port
• PCM port supports TDM (ST BUS, GCI or McBSP framing) or SSI modes at bit rates of 128, 256, 512, 1024, 2048, 4096, 8192 or 16384 Kb/sec
• Separate slave (microcontroller) and master (Flash) SPI ports, maximum clock rate = 25 MHz
• 5 General Purpose Input/Output (GPIO) pins
• General purpose UART port
• Boot loadable for future Zarlink software upgrades
• External oscillator or crystal/ceramic resonator
• 1.2 V Core; 3.3 V IO with 5 V-tolerant inputs