RENESAS 89H12NT12G2ZCHLG8

The 89HPES12NT12G2 is a member of the IDT family of PCI Express switching solutions. The PES12NT12G2 is a 12-lane, 12-port system interconnect switch optimized for PCI Express Gen2 packet switching in high-performance applications, supporting multiple simultaneous peer-to-peer traffic flows. Target applications include multi-host or intelligent I/O based systems where inter-domain communication is required, such as servers, storage, communications, and embedded systems.

• High Performance Non-Blocking Switch Architecture
  • 12-lane, 12-port PCIe switch with flexible port configuration
  • Integrated SerDes supports 5.0 GT/s Gen2 and 2.5 GT/s Gen1 operation
  • Delivers up to 12 GBps (96 Gbps) of switching capacity
  • Supports 128 Bytes to 2 KB maximum payload size
  • Low latency cut-through architecture
  • Supports one virtual channel and eight traffic classes
• Port Configurability
  • Twelve x1 ports configurable as follows: One x4 stack; Four x1 ports (ports 0 through 3 are not capable of merging with an adjacent port); Two x4 stacks configurable as: Two x4 ports; Four x2 ports; Eight x1 ports
  • Automatic per port link width negotiation (×4→×2→×1)
  • Crosslink support
  • Automatic lane reversal
  • Per lane SerDes configuration: De-emphasis; Receive equalization; Drive strength
• Innovative Switch Partitioning Feature
  • Supports up to 4 fully independent switch partitions
  • Logically independent switches in the same device
  • Configurable downstream port device numbering
  • Supports dynamic reconfiguration of switch partitions: Dynamic port reconfiguration — downstream, upstream, non-transparent bridge; Dynamic migration of ports between partitions; Movable upstream port within and between switch partitions
• Non-Transparent Bridging (NTB) Support
  • Supports up to 3 NT endpoints per switch, each endpoint can communicate with other switch partitions or external PCIe domains or CPUs
  • 6 BARs per NT Endpoint: Bar address translation; All BARs support 32/64-bit base and limit address translation; Two BARs (BAR2 and BAR4) support look-up table based address translation
  • 32 inbound and outbound doorbell registers
  • 4 inbound and outbound message registers
  • Supports up to 64 masters
  • Unlimited number of outstanding transactions
• Multicast
  • Compliant with the PCI-SIG multicast
  • Supports 64 multicast groups
  • Supports multicast across non-transparent port
  • Multicast overlay mechanism support
  • ECRC regeneration support
• Integrated Direct Memory Access (DMA) Controllers
  • Supports up to 2 DMA upstream ports, each with 2 DMA channels
  • Supports 32-bit and 64-bit memory-to-memory transfers
  • Fly-by translation provides reduced latency and increased performance over buffered approach
  • Supports arbitrary source and destination address alignment
  • Supports intra- as well as inter-partition data transfers using the non-transparent endpoint
  • Supports DMA transfers to multicast groups
  • Linked list descriptor-based operation
  • Flexible addressing modes: Linear addressing; Constant addressing
• Quality of Service (QoS)
  • Port arbitration: Round robin
  • Request metering: IDT proprietary feature that balances bandwidth among switch ports for maximum system throughput
  • High performance switch core architecture: Combined Input Output Queued (CIOQ) switch architecture with large buffers
• Clocking
  • Supports 100 MHz and 125 MHz reference clock frequencies
  • Flexible port clocking modes: Common clock; Non-common clock; Local port clock with SSC (spread spectrum setting) and port reference clock input
• Hot-Plug and Hot Swap
  • Hot-plug controller on all ports
  • Hot-plug supported on all downstream switch ports
  • All ports support hot-plug using low-cost external I²C I/O expanders
  • Configurable presence-detect supports card and cable applications
  • GPE output pin for hot-plug event notification
  • Enables SCI/SMI generation for legacy operating system support
  • Hot-swap capable I/O
• Power Management
  • Supports D0, D3hot and D3 power management states
  • Active State Power Management (ASPM): Supports L0, L0s, L1, L2/L3 Ready, and L3 link states; Configurable L0s and L1 entry timers allow performance/power-savings tuning
  • SerDes power savings: Supports low swing / half-swing SerDes operation; SerDes associated with unused ports are turned off; SerDes associated with unused lanes are placed in a low power state
• Reliability, Availability, and Serviceability (RAS)
  • ECRC support
  • AER on all ports
  • SECDED ECC protection on all internal RAMs
  • End-to-end data path parity protection
  • Checksum Serial EEPROM content protected
  • Ability to generate an interrupt (INTx or MSI) on link up/down transitions
• Initialization / Configuration
  • Supports Root (BIOS, OS, or driver), Serial EEPROM, or SMBus switch initialization
  • Common switch configurations are supported with pin strapping (no external components)
  • Supports in-system Serial EEPROM initialization/programming
• On-Die Temperature Sensor
  • Range of 0 to 127.5 degrees Celsius
  • Three programmable temperature thresholds with over and under temperature threshold alarms
  • Automatic recording of maximum high or minimum low temperature
• 9 General Purpose I/O
• Test and Debug
  • Ability to inject AER errors simplifies in system error handling software validation
  • On-chip link activity and status outputs available for several ports
  • Per port link activity and status outputs available using external I²C I/O expander for all remaining ports
  • Supports IEEE 1149.6 AC JTAG and IEEE 1149.1 JTAG
• Standards and Compatibility
  • PCI Express Base Specification 2.1 compliant
  • Implements the following optional PCI Express features: Advanced Error Reporting (AER) on all ports; End-to-End CRC (ECRC); Access Control Services (ACS); Device Serial

• servers
• storage
• communications
• embedded systems