Functional Description
The ZL38005 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 ZL38005 resident boot code during initialization.

FEATUREs
• 100 MHz (200 MIPs) Zarlink voice processor with
   hardware accelerator.
• Dual narrow band (8 KHz) ∆Σ ADCs with input
   buffer gain selection
• Dual narrow band (8 KHz) ∆Σ DACs
• Dual function Inter-IC Sound (I2S) 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
• 11 General Purpose Input/Output (GPIO) pins
• General purpose UART port
• Bootloadable for future Zarlink software upgrades
• External oscillator or crystal/ceramic resonator
• 1.2 V Core; 3.3 V IO with 5 V-tolerant inputs
• IEEE-1149.1 compatible JTAG port

APPLICATIONs
• Hands-free car kits
• Full duplex speaker-phone for digital telephone
• Echo cancellation for video conferences
• Intercom Systems
• Security Systems