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Megaraid 320-2x headers and connectors, Table 3.4 – Avago Technologies MegaRAID SCSI 320-0 (520-0 CH) User Manual

Page 49

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MegaRAID 320 Storage Adapter Family

3-9

Copyright © 2003-2008 by LSI Corporation. All rights reserved.

Table 3.4

MegaRAID 320-2X Headers and Connectors

Connector Description

Type

Comments

J1

Termination Enable
Channel 0

3-pin
header

Jumper on pins 1-2: Software uses drive detection to
control SCSI termination (default: do not change).
Jumper on pins 2-3: On-board SCSI termination
disabled.
No jumper: On-board SCSI termination enabled.

J2

Termination Enable
Channel 1

3-pin
header

J5

Internal SCSI Channel 0
Connector

68-pin
connector

Internal high-density SCSI bus connector

J6

Internal SCSI Channel 1
Connector

68-pin
connector

J7

External SCSI Channel 0
Connector

68-pin
connector

External very high-density SCSI bus connector

J8

I

2

C Header

4-pin
header

Reserved for LSI Logic internal use

J9

Serial Debug Interface

3-pin
connector

Reserved for LSI Logic internal use

J10

Mode 0 Initialization
Header

2-pin
connector

Reserved for LSI Logic internal use

J11

On-Board Cache LED

2-pin
header

LED glows when the on-board cache contains
data and a write from the cache to the hard drives
is pending.

J12

BBU Daughter Card

40-pin
header

Connector for an optional back-up battery pack

J13

SCSI Activity LED

2-pin
header

Connector for enclosure LED to indicate data
transfers. Connection is optional.

J14

External SCSI
Channel 1 Connector

68-pin
connector

External very high-density SCSI bus connector

J16

EEPROM Access
Connector

2-pin
connector

Reserved for LSI Logic internal use

J17

Termination Power
Enable Channel 0

2-pin
header

Jumpered: MegaRAID 320-2X supplies termination
power.
No jumper: SCSI bus provides termination power.

J18

Termination Power
Enable Channel 1

2-pin
header

J19

On-Board BIOS Enable 4-pin

header
(two rows
of two
pins each)

No jumper: BIOS enabled (default)
Jumpers on pins 1/3: NVSRAM clear
Jumper on pins 2/4: BIOS disable

U6

DIMM Socket

DIMM
socket

The MegaRAID 320-2X supports up to 512 Mbytes of
333 MHz unbuffered DDR ECC SDRAM, in a x72
configuration.