Fujitsu M2949/M2952/M2954:Switch Settings

- Setting terminal:CN4, CN6, CN7, CN10

Notes:

1. The user must not change the setting of terminals not described in this section. Do not change setting status set at factory shipment.
2. Do not change the setting of terminals except following setting pins during the power is turned on.

   - Write protect

   M294xS: CN7 5-6 M295xS: CN7 11-12 M294xQ: CN7 5-6 M295xQ: CN7 13-14 - Offline diagnostics

   All models: CN6 5-6

3. To short the setting terminal, use the short plug attached when the device is shipped from the factory.

PCA Layout(M294xE)
Figure 1.2 M294xE setting terminals position

PCA Layout(M294xQ)
Figure 1.3 M294xQ setting terminals position

PCA Layout(M295xS)
Figure 1.4 M295xS setting terminals position

PCA Layout(M295xE)
Figure 1.5 M295xE setting terminals position

PCA Layout(M295xQ)
Figure 1.6 M295xQ setting terminals position

Setting terminals(M294xS)
Figure 1.7 M294xS setting terminals

Setting terminals(M295xS)
Figure 1.8 M295xS setting terminals

Setting terminals(M294xQ)
Figure 1.9 M294xQ setting terminals

Setting terminals(M295xQ)
Figure 1.10 M295xQ setting terminals

Setting terminals(M294xE,M295xE)
Figure 1.11 M294xE,M295xE setting terminals

1.SCSI ID setting

(1)Single-ended 8-bit SCSI model(M294xS,M295xS)

Table 1.1 shows the SCSI ID setting. Refer to Figure 1.1 and 1.7 for M294xS and Figure 1.4 and 1.8 for M295xS.

Table 1.1 SCSI ID setting (single-ended 8-bit SCSI model:M294xS,M295xS)

SCSI ID	M294xS (CN4)			M295xS (CN7)
	5-6	3-4	1-2	5-6	3-4	1-2
0	OPEN	OPEN	OPEN	OPEN	OPEN	OPEN
1	OPEN	OPEN	SHORT	OPEN	OPEN	SHORT
2	OPEN	SHORT	OPEN	OPEN	SHORT	OPEN
3	OPEN	SHORT	SHORT	OPEN	SHORT	SHORT
4	SHORT	OPEN	OPEN	SHORT	OPEN	OPEN
5	SHORT	OPEN	SHORT	SHORT	OPEN	SHORT
6	SHORT	SHORT	OPEN	SHORT	SHORT	OPEN
7*	SHORT	SHORT	SHORT	SHORT	SHORT	SHORT

* Set at factory shipment

IMPORTANT

"Short" and "Open" in the explanation of this section have following meaning.

Short:The short plug is mounted between specific pins.
Open:The short plug is removed between specific pins.

IMPORTANT

1. Set the SCSI ID so that there are no duplicates between SCSI devices on the same SCSI bus.
2. The priority of SCSI bus use in ARBITRATION phase is determined by SCSI ID as follows:
   7>6>5>4>3>2>1>0

(2)SCA type 16-bit SCSI model (M294xE, M295xE)

There is no SCSI ID setting terminal for SCA type model.
Set the SCSI ID using ID0,ID1,ID2, and ID3 signals on the SCSI interface connector(CN1).

(3)Single-ended 16-bit SCSI model (M294xQ, M295xQ)

Table 1.2 shows the SCSI ID setting. Refer to Figures 1.3 and 1.9 for M294xQ, and Figure 1.6 and 1.10 for M295xQ.

IMPORTANT

When the SCSI ID is set using the external operator panel connector CN1, all pins listed in Table 1.2 should be open.
If any of pins are shorted, unexpected SCSI is set.

Table 1.2 SCSI ID setting(Single-ended 16-bit SCSI model:M294xQ, M295xQ)

SCSI ID	M294xQ(CN4)/M295xQ(CN7)
	7-8	5-6	3-4	1-2
0	OPEN	OPEN	OPEN	OPEN
1	OPEN	OPEN	OPEN	SHORT
2	OPEN	OPEN	SHORT	OPEN
3	OPEN	OPEN	SHORT	SHORT
4	OPEN	SHORT	OPEN	OPEN
5	OPEN	SHORT	OPEN	SHORT
6	OPEN	SHORT	SHORT	OPEN
7	OPEN	SHORT	SHORT	SHORT
8	SHORT	OPEN	SHORT	SHORT
9	SHORT	OPEN	OPEN	SHORT
10	SHORT	OPEN	SHORT	OPEN
11	SHORT	OPEN	SHORT	SHORT
12	SHORT	SHORT	OPEN	OPEN
13	SHORT	SHORT	OPEN	SHORT
14	SHORT	SHORT	SHORT	OPEN
15*	SHORT	SHORT	SHORT	SHORT

* Setting at factory shipment

IMPORTANT

1. Set the SCSI ID so that there are no duplicates between SCSI devices on the same SCSI bus.
   
2. The priority of SCSI bus use in ARBITRATION phase is determined by SCSI ID as follows:
   7>6>5>4>3>2>1>0>15>14>13>12>11>10>9>8

2. Each mode setting

(1)Motor start mode

Set how to control the starting of the HDD spindle motor according to the Table 1.3. This setting only determines the operation mode when the power supply is turned on or the microcode is downloaded. In both modes, stopping or restarting the spindle motor can be controlled by specifying the START/STOP UNIT command.

This setting is not provided for SCA type 16-bit SCSI model (M294xE, M295xE).

Refer to Figures 1.1 and 1.7 for M294xS, Figures 1.4 and 1.8 for M295xS, Figure 1.3, and 1.9 for M294xQ, and Figures 1.6 and 1.10 for M295xQ.

Table 1.3 Motor start mode setting

Start timing of the spindle motor	CN6 1-2
Starting of the motor is controlled with the START/STOP UNIT command.	OPEN
The motor is started immediately after the power supply is turned on or the microcode is downloaded.	SHORT*

* Setting at factory shipment

(2)SCSI bus parity

Set whether the SCSI data bus parity bit check is performed according to Table 1.4.
This setting is not provided for SCA type 16-bit SCSI model(M294xE, M295xE)
Refer to Figure 1.1 and 1.7 for M294xS, Figure 1.4 and 1.8 for M295xS, Figure 1.3 and 1.9 for M295xQ.

Table 1.4 SCSI bus parity setting

SCSI data bus parity check by HDD	CN6 3-4
Not performed	OPEN
Performed	SHORT*

* Setting at factory shipment

(3)Offline self-diagnostics

Starting/stopping the HDD offline self-diagnostics can be set (see Table 1.5.) The offline self-diagnostics can test the normality of the HDD controller function and the basic read/write operation of the disk drive.
In normal operation,the setting terminals must be open. Refer to Figures 1.1 and 1.7 for M294xS, Figures 1.4 and 1.8 for M295xS, Figure 1.3 and 1.9 for M294xQ, Figures 1.6 and 1.10 for M295xQ, Figures 1.2 and 1.11 for M294xE, and Figures 1.5 and 1.11 for M295xE.

Table 1.5 Offline self-diagnostics setting

Offline self-diagnostics	CN6 5-6
Stopped(normal operation mode)	OPEN*
Executed(diagnostics mode)	SHORT

* Setting at factory shipment

3. Write protect,terminating resistor setting

(1)Write protect

When the write protect function is enabled, writing to the disk medium is disabled. The write protect function setting is not provided to the SCA type 16-bit SCSI model(M294xE, M295xE).
Table 1.6 Write protect setting

Write protect	M294xS	M295xS	M294xQ	M295xQ
	CN7 5-6	CN7 11-12	CN7 5-6	CN7 13-14
Write operation is enabled.	OPEN*	OPEN*	OPEN*	OPEN*
Write operation is disabled.	SHORT	SHORT	SHORT	SHORT

* Setting at factory shippment

(2)Connection of terminating resistor on SCSI interface

a.Single-ended 8-bit SCSI model(M294xS,M295xS)

The setting terminal enables the terminating resistor circuit on the HDD to be connected on the SCSI interface.

Refer to Figures 1.1 and 1.7 for M294xS, and Figures 1.4 and 1.8 for M295xS.

Table 1.7 Setting of connection of terminating resistor on SCSI interface

(single-ended 8-bit SCSI model:M294xS,M295xS)

Connection of the terminating resistor on the SCSI interface	M294xS	M295xS
	CN7 7-8	CN7 13-14
Terminating resistor circuit is not connected	OPEN	OPEN
Terminating resistor circuit is connected	SHORT*	SHORT*

* Setting at factory shipment

b.SCA type 16-bit SCSI model(M295xE)

Since there is no SCSI terminating resistor on the SCSI interface for SCA type 16-bit SCSI, there is no setting on the HDD. However, the HDD has the terminating resistor for SCSI data but DB08 to DB15 and DBP1 with considering that SCSI data bus DB08 to DB15 and DBP1 are not used when 16-bit SCSI model is used as 8-bit model. When all SCSI bus (DB00 to DB07,DBP0,DB08 to DB15, and DBP1) are used on the SCSI interface and the SCSI termination is made on the system, this setting is not needed.

Refer to Figure 1.2 and 1.11 for M294xE, and Figure 1.5 and 1.11 for M295xE.

Table 1.8 Setting connection of the terminating resistor on SCSI interface(SCA type 16-bit SCSI model:M295xE with PCA CA20314-B82x model only)

Connection of the terminating resistor on the SCSI interface	M295xE
	CN6 3-4
Terminating resistor circuit for DB08 to DB15,DBP1 is not connected.	OPEN*
Terminating resistor circuit for DB08 to DB15,DBP1 is connected.	SHORT*

* Setting at factory shipment

When connecting the terminating resistor, use the spare plug mounted on CN6 1-2

c. Single-ended 16-bit SCSI model (M294xQ,M295xQ)

Setting terminals CN10 1-2 and 3-4 set whether to use the terminating resistor circuit on the SCSI interface provided for the HDD (see Table 1.9)

The HDD provides two terminating resistor circuits(for DB00 to DB07 and DBP0, and for DB08 to DB15 and DBP1) with considering that SCSI data bus DB08 to DB15 and DBP1 are not used when 16-bit SCSI model and as 8-bit SCSI model.

When the SCSI bus (DB08 to DB15 and DBP1) is not used on is not connected to the terminatating resistor on the system when the 16-bit SCSI model is used as 8-bit SCSI model,set according to Tabel 1.9.

IMPORTANT

When the external operator is connected using the external operator panel connector CN1, this setting is effective only when the A9 pin (DISCON) is open.

Table 1.9 Setting of connection of terminating resistor on SCSI interface (single-ended 16-bit SCSI model:M294xQ,M295xQ)

Connection of the terminating resistor on the SCSI interface	M294xQ,M295xQ
	CN10 3-4	CN10 1-2
Terminating resistor circuit is not connected to all SCSI bus lines.	OPEN	OPEN
When SCSI data bus lines DB08 to DB15 and DBP1 are not connected on terminating resistor circuit is not connected to SCSI bus lines DB08 to DB15 and DBP1 on the system, terminating resistor circuit is connected to SCSI bus lines DB08 to DB15 and DBP1 on the HDD.(16-bit SCSI model is used as 8-bit SCSI model)	SHORT	OPEN
Terminating resistor circuit is connected to all SCSI bus lines.	SHORT*	SHORT*

* Setting at factory shipment

4. Mode settings

In addition to the previously described settings using setting terminals, the HDD is provided several mode settings.
The mode settings are enabled by specifying the CHANGE DEFINITION command. Table 1.10 lists the mode settings and their settings at factory shipment.

Table 1.10 Default mode settings(by CHANGE DEFINITION) command

Mode setting	Contents
SCSI level	SCSI-2
SYNCHRONOUS DATA TRANSFER REQUEST message sending	Sent from HDD
UNIT ATTENTION report mode	Reported
Reselection retry mode	Not restricted
WIDE DATA TRANSFER REQUEST message sending	Sent from HDD
LED display condition	During command execution
Reselection time-out delay	250 ms
Spindle motor start delay time	0 sec

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