Operations and Maintenance Guide, Second Edition - HP Integrity rx2600 Server and HP zx6000 Workstation

C–160 HP Integrity rx2600 server and HP workstation zx6000 Operation and Maintenance Guide
System Board
■ Uses peer-to-peer (P2P) subset that is required by the AGP specification (write-only, PCI
cycles).
Dual Serial Controller
The dual serial controller is a dual universal asynchronous receiver and transmitter (DUART).
This chip provides enhanced UART functions with 16-byte FIFOs, a modem control interface.
Registers on this chip provide onboard error indications and operation status. An internal
loopback capability provides onboard diagnostics.
Features include the following:
■ Data rates up to 115.2kbps
■ 16550A fully compatible controller
■ A 16-byte transmit FIFO to reduce the bandwidth requirement of the external CPU
■ A 16-byte receive FIFO with four selectable interrupt trigger levels and error flags to reduce
the bandwidth requirement of the external CPU
■ UART control that provides independent transmit and receive
■ Modem control signals (-CTS, -RTS, -DSR, -DTR, -RI, -CD, and software controllable line
break)
■ Programmable character lengths (5, 6, 7, 8) with even, odd, or no parity
■ A status report register
Field Programmable Gate Array
The field programmable gate array (FPGA) provides ACPI and LPC support for HP Intel Itanium
2 platforms based on HP chipsets. This controller provides the following features:
■ ACPI 2.0 interface
■ LPC bus interface to support BMC
■ Decoding logic for PDH devices
Baseboard Management Controller
The BMC supports the industry-standard IPMI specification. This specification describes the
management features that are built into the system board. These features include: both local and
remote diagnostics console support, configuration management, hardware management, and
troubleshooting.
The BMC provides the following:
■ Compliance with IPMI 1.0
■ Tachometer inputs for fan speed monitoring
■ Pulse width modulator outputs for fan speed control
■ Push-button inputs for front panel buttons and switches
■ One serial port, multiplexed with the server console port
■ Remote access and intelligent chassis management bus (IC MB) support