VSC9138YHM-01

Specialized Overview

The VSC9138YHM-01 is a 10 Gbps multi-service high order/low order virtual concatenation mapper manufactured by Microchip Technology. It supports 128 independent channels and 128 Virtual Concatenation Groups (VCGs) of STS-1/VC-3, STS-3C/VC-4, VT1.5/VT2.0, and TU-12/TU-11. The device features OIF compliant SPI-3 (32-bit) and SPI-4.2 (16-bit) interfaces, alongside a 72-bit external DDR SDRAM interface. It provides dual-rate STS-48/STM-16 or STS-12/STM-4 working and protection backplane interfaces. Power dissipation is specified at 9W for LOVCAT192 configurations. The component is housed in a 1760 HFCBGA package.

Specialized Feature Summary

• Supports hitless Link Capacity Adjustment Scheme (LCAS) and concurrent legacy contiguous concatenation with virtual concatenation
• Encapsulates received data from SPI-3/4.2 interfaces with Generic Framing Protocol (GFP) headers
• Enables direct connection to SONET/SDH TDM backplanes at 622M and 2.5G without external devices
• Provides high VC group count for dense termination of multiple network endpoints

Specialized Applications

• SONET/SDH Multi-service Provisioning Platforms (MSPPs)
• Next generation SONET/SDH Metro Ethernet systems
• Resilient Packaging Ring (RPR) applications

Specialized Procurement Notes

Verify the specific ordering suffix against official documentation to confirm pinout compatibility and functional parameters. Confirm that the manufacturer accepts the requested quantity and review lead time requirements prior to finalizing procurement orders.

Specialized Selection Notes

Select this component when designing systems requiring 10 Gbps bandwidth support and extensive virtual concatenation capabilities. Ensure the design accommodates the required 72-bit DDR SDRAM interface and utilizes the appropriate SPI-3 or SPI-4.2 interface configuration for optimal system integration.

Specialized Part Context

This component belongs to the VersaCAT family, which adapts Ethernet technology to WAN transport infrastructures. It serves as a third-generation VC mapper designed for efficient provisioning of data services ranging from 10 Mbps to 10 Gigabit Ethernet over existing networks while optimizing bandwidth utilization through hitless rate adaptation.

Specialized Replacement Considerations

The VSC9135 offers pin-compatible functionality with 2.5 Gbps bandwidth support. Verify if the lower bandwidth requirement aligns with system needs before substituting.