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Last updated: July 21, 2000


Ultra 80 / Enterprise 420R / Netra t 1400/1405

A27 / A33

501-5168
0MB FRU

Jumper Settings
FAB 501-5168-03

JUMPER PINS SETTING DESCRIPTION
J0102 2-3 In* Bypass CPU0 in scan chain
J0202 2-3 In* Bypass CPU1 in scan chain
J0302 2-3 In* Bypass CPU2 in scan chain
J0402 2-3 In* Bypass CPU3 in scan chain
J2804 1-2
2-3
Out
In*
RS-232 +12Vdc
RS-423
J2805 1-2
2-3
Out
In*
RS-232 -12Vdc
RS-423
J3001 1-2
2-3
In*
Out
FPROM write protected
FPROM write enabled
J3002 1-2
2-3
In*
Out
Select Flash PROM
Select ROMBO
J3102 1-2
2-3
Out
In*
FPROM high half booting
FPROM low half booting
J3201 1-2
2-3
In
In
÷3 mode (360MHz)
÷4 mode (400MHz/450MHz)
J3705 1-2
2-3
In*
Out
QAM WGS- to SPEAKER OUT-
QAM WGS- to POWERON_L
J3706 1-2
2-3
In*
Out
QAM WGS+ to SPEAKER OUT+
QAM WGS+ to SUPPLYTRIP_L
J4101 1-2
2-3
Out
Out
POWER_SET0_POS to POWER_SET_POS
POWER_SET1_POS to POWER_SET_POS
J4102 1-2
2-3
Out
Out
POWER_SET2_POS to POWER_SET_POS
POWER_SET3_POS to POWER_SET_POS
J4103 1-2
2-3
Out
Out
POWER_OV0 to POWER_OV
POWER_OV1 to POWER_OV
J4104 1-2
2-3
Out
Out
POWER_OV2 to POWER_OV
POWER_OV3 to POWER_OV
*    Default Settings

PCI Slot Numbering

SLOT BUS DEVICE TREE
4 B pci@1f,4000/*@5,*
3 B pci@1f,4000/*@2,*
2 B pci@1f,4000/*@4,*
1 A pci@1f,2000/*@1,*

PCI Bus B shares the address/data bus with on-board Audio, Ethernet, Flash, Floppy, Keyboard, Mouse, NVRAM, Parallel, SCSI, and Serial devices.

Miscellaneous Connectors

CONNECTOR PINS DESCRIPTION
J2801 1-8 Serial test (factory use)
J2802 1-32 ROMBO (factory use)
J3101 1-2
2-3
Button XIR (factory use)
Button POR (factory use)
J3103 1-8 JSCC (factory use)
J4105 1-18 DC-DC Converter
J4106 1-14 Power Supply sense
J4107 1-28 Power Supply +3.3V and +5V
J4108 1-10 DC-DC converter
J4109 1-2 Fan power
J4110 1-2 Fan power
J4111 1-8 Interlock, LED, speaker, and power switch
J4112 1-10 DC power to internal peripherals

Notes

  1. The minimum A27 or E420R OS is 2.5.1 HW: 11/97, 2.6 HW: 5/98, or 7 HW: 8/99.
  2. The flash PROM is soldered to the system board.
  3. Use the Flash PROM Programming Utility to update the flash PROM.
  4. 64-Bit PCI boards do not fit into Slot 4. Connector J3601 interferes with the 64-Bit PCI extension connector.
  5. UPA Slot 0 is CPU 0, UPA Slot 1 is CPU 1, etc.

SCSI Bus Notes

  1. The internal SCSI bus is controlled by /pci@1f,4000/scsi@3.
  2. The external SCSI bus is controlled by /pci@1f,4000/scsi@3,1.

Memory Notes

  1. The minimum requirement is four DIMMs in any bank.
  2. DIMMs can be installed in any bank order.
  3. DIMMs are required on both the Riser Board and the System Board.
  4. Damage to the Mictor Connectors can occur if DIMMs are installed or removed when the Riser Board is installed on the System Board.
  5. Each bank addresses 1GB of memory.
  6. Two-way and four-way memory bank interleaving is supported.

References

  1. Ultra 80 Getting Started Guide, 805-6615.Internet Link
  2. Ultra 80 Service Manual, 805-6618.Internet Link
  3. Enterprise 420R Service Manual, 806-1080.Internet Link


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