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PM3755U2B

DISTRIBUTED PROCESSING TECHNOLOGY

PM3755U2B

Card Type

Hard drive controller

Chip Set

Unidentified

Maximum Onboard Memory

256MB DRAM

I/O Options

SCSI connectors (2), expansion module connectors (2)

Hard Drives supported

Up to 15 Ultra2/LVD Wide SCSI devices

Up to 45 Wide SCSI-2 or Ultra-wide SCSI devices with expansion board upgrades

Floppy drives supported

None

Data Bus

64-bit PCI

Card Size

Full-length

CONNECTIONS

Function

Label

Function

Label

32-bit header connector to expansion module

J7

68-pin SCSI connector Ch. 0 - external

J11

64-bit header connector to expansion module

J8

4-pin connector - drive active LED

P6

68-pin SCSI connector Ch. 0 - internal

J10

   

Note: Header connector to BB4050 battery module is unidentified

USER CONFIGURABLE SETTINGS

Function

Label

Position

NVRAM reset to default settings

P4

Pins 1 & 2 closed

NVRAM setup parameters retained

P4

Pins 3 & 4 closed

Load enabled

P9

Pins 1 & 2 closed

Run enabled

P9

Pins 3 & 4 closed

DIMM MEMORY CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

16MB

(1)2MB x 64

None

None

None

32MB

(1)2MB x 64

(1)2MB x 64

None

None

48MB

(1)2MB x 64

(1)2MB x 64

(1)2MB x 64

None

64MB

(1)2MB x 64

(1)2MB x 64

(1)2MB x 64

(1)2MB x 64

64MB

(1)8MB x 64

None

None

None

80MB

(1)8MB x 64

(1)2MB x 64

None

None

144MB

(1)8MB x 64

(1)8MB x 64

(1)2MB x 64

None

160MB

(1)8MB x 64

(1)8MB x 64

(1)2MB x 64

None

128MB

(1)8MB x 64

(1)8MB x 64

None

None

192MB

(1)8MB x 64

(1)8MB x 64

(1)8MB x 64

None

208MB

(1)8MB x 64

(1)8MB x 64

(1)8MB x 64

(1)2MB x 64

256MB

(1)8MB x 64

(1)8MB x 64

(1)8MB x 64

(1)8MB x 64

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Unidentified

On

Controller is ready; interrupts are enabled

LED1

Unidentified

Off

Controller is inactive

LED1

Unidentified

Blinking

Controller is active

LED2

Unidentified

On

Non-maskable interrupt (NMI) detected

LED2

Unidentified

Off

NMI not detected

LED3

Unidentified

On

Controller in idle loop mode

LED3

Unidentified

Off

Controller not in idle loop mode

LED4

Unidentified

On

Interrupt is being processed

LED4

Unidentified

Off

Interrupt is not being processed

LED5

Unidentified

Off

Not used

LED6

Unidentified

On

Cache controller is using DMA to perform a data transfer

LED6

Unidentified

Off

Cache controller is not using DMA to perform a data transfer

LED7

Unidentified

On

Parity is being generated

LED7

Unidentified

Off

Parity is not being generated

LED8

Unidentified

On

Command detected on SCSI

LED8

Unidentified

Off

Command not detected on SCSI

IRQ

Unidentified

On

Interrupt has been activated on host PCI bus

IRQ

Unidentified

Off

Interrupt has not been activated on host PCI bus

ECCEN

Green

On

Cache is ECC protected

ECCEN

Green

Off

Cache is not ECC protected

ECCER

Red

On

Error detected. Cache failure information reported

ECCER

Red

Off

Error not detected

SX4055U2-1 EXPANSION MODULE

CONNECTIONS

Function

Label

Function

Label

68-pin SCSI connector Ch. 1- internal

J2

64-bit auxiliary header connector to Controller card

P3

68-pin SCSI connector Ch. 1 - external

J3

Header connector to Controller card

P5

Note: SX4055U2-1 expansion module supports an additional 15 Ultra2/LVD Wide SCSI devices

SX4055U2-2

CONNECTIONS

Function

Label

Function

Label

68-pin SCSI connector Ch. 2 - external

J1

68-pin SCSI connector Ch. 2 - internal

J4

68-pin SCSI connector Ch. 1- internal

J2

64-bit auxiliary header connector to Controller card

P3

68-pin SCSI connector Ch. 1 - external

J3

Header connector to Controller card

P5

Note: SX405U2-2 expansion module supports an additional 30 Ultra2/LVD Wide SCSI devices

SX4055F FC-AL

CONNECTIONS

Function

Label

Function

Label

HSSDC FC-AL connector Ch. 1 - external

P2

Header connector to Controller card

P5

64-bit auxiliary header connector to Controller card

P3

   

Note: Fibre channel provided by expansion module supports up to 126 additional devices

BB4050 BATTERY BACKUP MODULE

CONNECTIONS

Function

Label

Function

Label

Battery cable connector

J1

Header connector to Controller card

P12

Note: BB4050 battery backup module may only be installed on a PM3755U2B Controller

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Unidentified

On

Trickle charge activity detected

LED1

Unidentified

Off

Trickle charge activity not detected

LED2

Unidentified

On

Charging/recharging mode initiated

LED2

Unidentified

Off

Battery module not charging