Scsi / Lan Combo Board; Pci Interface - HP Kayak XA Technical Reference Manual

3 Interface Devices and Mass-Storage Drives

SCSI / LAN Combo Board

SCSI / LAN Combo Board
Certain HP Kayak XA PC Workstations are supplied with an integrated
SCSI / 10BT/100TX LAN combo board. Because the SCSI / LAN combo
board includes two controllers, only one PCI slot is necessary for installing
this board. The PCI and SCSI controllers access the PCI bus through a PCI
bridge. The SCSI and PCI functionalities of the SYM8751SP are contained
within the Symbios Logic SYM5C875J PCI-SCSI I/O Processor chip.
The following hardware functional diagram shows the SCSI part of the SCSI/
LAN Combo board.
External connector (8 bits)
Ext. Device
T o ExtStart Connector
SCSI LED
LED connector
(not loaded)

PCI Interface

The PCI interface operates as a 32-bit DMA bus master. The connection is
made through the edge connector. The signal definitions and pin numbers
conform to the PCI Local Bus Specification Revision 2.0 standard. The PCI
interface conforms to the PCI universal signaling environment for a 5 volt or
3.3 volt PCI bus.
58
Term. Power
Fuse 3A
Ext. Device
Termination L
PCI Bus
Termination H
SCSI Controller
Osc.
40MHz
eeprom
Clock
SYM53C875
Data
24C16
2KBytes
PCI Bus
5V
Term. Power
Int. Device
Flash Memory
Internal connector (16 bits)
12V
VPP Translator
28F020
64KBytes