Confirmed with excellent detail from Cisco's official data sheet. Here's the accurate version:

The Cisco A9K-RSP880-LT-TR is the Route Switch Processor 880-LT, Packet Transport (TR) optimized, serving as the system processor for the Cisco ASR 9010, ASR 9006, ASR 9904, ASR 9910, and ASR 9906 routers. This carrier-grade RSP delivers 880 Gbps switch fabric capacity, supporting high-density 100 Gigabit Ethernet line cards while maintaining backward compatibility with the ASR 9000 Series' second-generation line card family, making it well-suited for wireline, Data-Center-Interconnect (DCI), and Radio Access Network (RAN) aggregation applications.

Key Features & Benefits

• Broad ASR 9000 Chassis Compatibility: Serves as the system processor across the ASR 9010, ASR 9006, ASR 9904, ASR 9910, and ASR 9906 chassis, enabling common sparing across multiple router platforms.
• 880 Gbps Switch Fabric Capacity: Delivers substantial switch fabric bandwidth, supporting high-density 100GbE line cards for demanding video, cloud, and mobile services.
• 16GB System Memory: Equipped with 16GB of RAM alongside 8GB flash memory (dual) and dual 128GB SSD storage, providing ample resources for control-plane processing.
• Cisco IOS XR Software Platform: Powered by Cisco's carrier-class IOS XR Software, supporting true software process modularity, Software Maintenance Updates (SMU), and Field-Programmable Device (FPD) upgrades without service interruption.
• Precision Timing Support: Includes Precision Time Protocol (PTP/IEEE 1588-2008) via dedicated Ethernet port, Bidirectional Time of Day (ToD), and Centralized Building Integrated Timing Supply (BITS) support for carrier-grade synchronization.
• Distributed, Redundant Architecture: Features a distributed switch fabric architecture with multistage low-latency, nonblocking design, service intelligence, and traffic prioritization, supporting fully redundant, high-availability deployments.

Technical Specifications