SCSI Backplane Board

 

Intel® Server Platform SR6850HW4 TPS

 

 

 

 

 

HDD_LED_ACT_R_N

O

 

Drives the front control panel drive active green LED when either

 

 

 

 

a SCSI drive or an SATA drive is active

 

 

 

 

 

 

HDD_LED_FLT_R_N

O

 

Drives the front control panel drive fault amber LED to indicate a

 

 

 

 

SCSI drive fault

 

 

 

 

 

 

NIC1_LINK_LED_R_N

O

 

Drives the front control panel LAN1 green LED to indicate status

 

 

 

 

of LAN1 on the Mainboard

 

NIC2_LINK_LED_R_N

O

 

Drives the front control panel LAN22 green LED to indicate

 

 

 

 

status of LAN2 on the Mainboard

 

 

 

 

 

 

I2C_IPMB_SCL

I/O

 

This pin supplies an isolated version of the global IPMB Bus

 

 

 

 

clock to the front control panel.

 

 

 

 

 

 

I2C_IPMB_SDA

I/O

 

This pin supplies an isolated version of the global IPMB Bus data

 

 

 

 

to the front control panel.

 

 

 

 

 

 

+5V

O

 

Power for the front control panel

 

 

 

 

 

 

+5V STBY

O

 

Power for the blue LED on the front control panel

 

 

 

 

 

 

GND

O

 

Ground, signal common

 

 

 

 

 

 

7.3.4 LVD SCSI 68-pin Connector

Each 68-pin LVD SCSI connector carries SCSI signals between the SCSI Backplane Board. The Server Board Set SE8500HW4 Mainboard is unshielded. Table 46 provides a description of the LVD SCSI connector.

Table 46. LVD SCSI Connector Signal Description

Signal

Type

Driver

Name and Description

LVD_DB[15..0]_[P, N]

I/O

LVD hs

SCSI data bus. The data bits for the differential SCSI bus.

 

 

 

 

LVD_DBP_[P, N]

I/O

LVD hs

SCSI data parity. Support parity on the SCSI bus. DB_P0[P/N] supports

LVD_DBP1_[P, N]

 

 

parity for data [7..0]. DB_P1[P/N] supports parity for data [15..8].

 

 

 

 

 

 

 

DIFFSENSE

I

Analog

Differential sense. The voltage level determines the operating mode of

 

 

 

the target devices on the SCSI bus. If the voltage on the DIFFSENSE

 

 

 

signal is from –0.35 V to +0.5 V the mode will be SE. If it is from +0.7 V

 

 

 

to 1.9 V the mode will be LVD.

 

 

 

 

LVD_ATN_[P, N]

I/O

LVD hs

SCSI bus attention. Asserted by a SCSI device in initiator mode to alert

 

 

 

the target that the initiator has a message to transfer.

 

 

 

 

LVD_BSY_[P, N]

I/O

LVD hs

SCSI bus busy. Indicate that the SCSI bus is being used. Can be driven

 

 

 

by both the initiator and the target device.

 

 

 

 

LVD_ACK_[P, N]

I/O

LVD hs

SCSI bus acknowledge. Driven by an initiator, indicating an

 

 

 

acknowledgement for a SCSI data transfer.

LVD_RST_[P, N]

I/O

LVD hs

SCSI bus reset. Indicate a SCSI bus reset condition.

 

 

 

 

LVD_MSG_[P, N]

I/O

LVD hs

SCSI bus message phase. Driven by a SCSI target to indicate it is in the

 

 

 

Message Phase.

 

 

 

 

LVD_SEL_[P, N]

I/O

LVD hs

SCSI bus select. Used by an initiator to select a target or by a target to

 

 

 

reselect an initiator.

 

 

 

 

LVD_CD_[P, N]

I/O

LVD hs

SCSI bus control/data phase. Driven by a target, these pins indicate that

 

 

 

control or data information is being transferred over the SCSI bus.

 

 

 

 

LVD_REQ_[P, N]

I/O

LVD hs

SCSI bus request. Driven by a target, these pins indicate a request for a

 

 

 

SCSI data-transfer handshake.

 

 

 

 

80

Revision 1.0

 

Intel order number D23151-001