Transwitch (TranSwitch Corporation ) : TXC-05427

COBRA

The Constant Bit Rate ATM Adaptation Layer 1 (COBRA) device is a CMOS VLSI device that provides the functions needed for circuit emulation over ATM. Both Structured (e.g. nx64 Kbits/s) and Unstructured services(e.g. 1544 Kbits/s and 2408 Kbit/s) are supported. Four independent channels are supported in a single device. The COBRAsupports three clock modes: internal clock recovery based on thesynchronous residual time stamp (SRTS), clock recovery based on the FIFO fill level, and an external clock mode. The COBRA device interfacesdirectly to a PCM line interface device and to an UTOPIA compliantdevice.Features are

• AAL1 segmentation and reassembly
• Four independent channels
• Structured and Unstructured service
• Internal Clock recovery with SRTS and Adaptive mechanism
• External Clock mode
• Partially filled cell
• AAL1 bypass mode
• Selectable AMI/B8ZS/HDB3 line coding
• AIS/Test signal generation
• Coding violation monitor
• Loss of signal and output activity monitor
• Line loopback
• Serial port for control of line interface devices
• Motorola/Intel compatible microprocessor interface
• ATM Forum Compliant

Technology:	unknown
Package:	unknown 0 Pin