Scsi Function Specifications; Table 2.4 Scsi Function Specifications - Fujitsu MAX3147NC Maintenance Manual

2.2

SCSI Function Specifications

Table 2.4 shows the SCSI functions provided with the HDD.
Single-ended type
HVD type (High Voltage Differential)
LVD type (Low Voltage Differential)
Electrical
requirements
Single-ended type
(*1)
Differential type
TERMPWR signal send function
68-pin P cable connector
Connector
80-pin SCA2 connector
Data bus parity (Data bus CRC)
Bus arbitration function
Disconnection/reconnection function
SCSI ID
Addressing
LUN (logical unit number)
8-bit SCSI (Single-ended type)
Data transfer
16-bit SCSI (Single-ended type)
(Synchronous
mode) (*2)
Data buffer (*3)
Data block length (Logical data length=Physical data length) (*4)
(*1)
The driver mode (Single-ended or LVD) changes automatically by Diffsence signal level.
1MB/s=1,000,000 bytes/s
(*2)
1MB=1,048,576 bytes
(*3)
(*4)
Refer to (12) of Section 1.1.
C141-E229
Table 2.4 SCSI function specifications
Item
Position where the terminating
resistor is mounted on the PCA
Position where the terminating
resistor is mounted on the PCA
16-bit SCSI
(Ultra 2 type)
(Ultra 2 Wide type)
(U160 LVD type)
(U320 LVD type)
Specification
Ο
×
Ο
×
×
Ο (NP model)
Ο (NP model)
Ο (NC model)
Ο
Ο
Ο
#0 to #15
(Jumper selection, NP model)
#0 fixed
Ο
20 MB/s max.
Ο
40 MB/s max.
Ο
40 MB/s max.
Ο
80 MB/s max.
Ο
160 MB/s max.
Ο
320 MB/s max.
8 MB
512 to 528 bytes
(Fixed length)
Ο : Provided × : Not provided
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