Fujitsu MAN3184 SERIES Specifications

Text of Fujitsu MAN3184 SERIES User Guide:

• C141-E123-01EN 1 - 15 1.3.2 Interface cable Use the twisted-pair interface cables satisfying the requirements of Tables 1.4 ,1.5. Table 1.4 SE and LVD Transmission line impedance of cable at maximum indicated data transfer rate Local SE transmission line impedance Local differential transmission line impedance Description Minimum Maximum Minimum Maximum All 84 Ohm

• Fujitsu MAN3184 SERIES, C141-E123-01EN 1 - 7 (7) REQ (REQUEST) This is a transmission request from the TARG to the INIT in the INFORMATION TRANSFER phase. (8) ACK (ACKNOWLEDGE) The ACK signal is a response to the REQ signal sent from the INIT to TARG in the INFORMATION TRANSFER phase. (9) ATN (ATTENTION) The ATN signal indicates that the INIT has a message to be sent to the TARG. It is used to generate an ATTENTION condition. (10) RST (RESET) The RST signal is a Reset signal to clear all SCSI devices on the bus (to the RESET condition). 1.3 Physical Requirements All SCSI devices are connected to each other in a daisy chain. Both ends of the interface cable are te

• Fujitsu MAN3184 SERIES, C141-E123-01EN 2 - 1 CHAPTER 2 SCSI MESSAGE 2.1 Message System 2.2 SCSI Pointer 2.3 Message Explanation This chapter describes SCSI messages and their operations for controlling the operation sequence of the SCSI bus. Note: The IDD operates as a target device (TARG) on the SCSI bus. The IDD is referred to as the TARG in this chapter except when its clear identification is required. 2.1 Message System The message system provides procedures for information (or message) transfer between two SCSI devices on the SCSI bus in order to control a series of bus phase sequence during command execution. The messages are transferred over the SCSI data bus

• C141-E123-01EN 2 - 21 Table 2.5 Transfer mode setup request from INIT to IDD (SDTR: SYNCHRONOUS DATA TRANSFER REQUEST message) Message from INIT IDD Response Transfer mode to be defined REQ/ACK Offset X'00' SDTR REQ/ACK Offset = 0 Asynchronous mode X'01' : X'7F' SDTR REQ/ACK Offset =Specified value by INIT Synchronous mode REQ/ACK offset < Specified value by I

• Fujitsu MAN3184 SERIES, C141-E123-01EN 2 - 15 2.3.18 IDENTIFY message: X'80' to X'FF' (I ↔ ↔↔ ↔ T) Bit76543210 1D LUN This message specifies the logical unit number (LUN) for the device (logical unit) under the TARG and establishes an I/O operation path between the INIT, TARG, and logical unit. a. Bit 6: Disconnect Privilege (D) Only the INIT can set this bit to 1. When this bit is 1, it indicates that the INIT permits the TARG to execute disconnection processing. When this bit is 0, the TARG must not execute disconnection operation. When the TARG sends this message, this bit

• Fujitsu MAN3184 SERIES, C141-E123-01EN iii REVISION RECORD Edition Date published Revised contents 01 Mar.,2001 Specification No.: C141-E123-**EN The contents of this manual is subject to change without prior notice. All Rights Reserved. Copyright  2001 FUJITSU LIMITED

• Fujitsu MAN3184 SERIES, C141-E123-01EN 1 - 67 (5) Data transfer rate in synchronous mode Table 1.18 lists the synchronous transfer mode parameters valid for the IDD. The actual values are determined by exchange of SYNCHRONOUS DATA TRANSFER REQUEST or PARALLEL PROTOCOL REQUEST message between the two SCSI devices. If two or more INITs are used, different parameters may be used by each INIT. The PARALLEL PROTOCOL REQUEST message are used to negotiate a synchronous data transfer agreement, a wide data transfer agreement, and set the protocol options between two SCSI devices. Although the data transfer rate is determined by the Transfer Period par

• Fujitsu MAN3184 SERIES, C141-E123-01EN 1 - 23 (4) MATED 1/Backplane Side The signal shall be held to a ground level when the MATED 2 connection is completed. The MATED 1 signal shall be held to the open level when the MATED 2 connection is not completed. MATED 2 connection Figure 1.15 Circuit for mated indications 1.4.3 Internal terminal resistor and power supply for terminating resistor The TERMPWR signal of the interface connector supplies the power to the terminating resistor circuit connected to both ends of the cable. To attach a terminating resistor to an external SCSI device or to cut the power of SCSI device having a terminator, the terminator power must be sup

• Fujitsu MAN3184 SERIES, FUJITSU LIMITED Business Planning Solid Square East Tower 580 Horikawa-cho,Saiwai-ku, Kawasaki, 210-0913, Japan TEL: 81-44-540-4056 FAX: 81-44-540-4123 FUJITSU COMPUTER PRODUCTS OF AMERICA, INC. 2904 Orchard Parkway, San Jose, California 95134-2009, U.S.A. TEL: 1-408-432-6333 FAX: 1-408-432-3908 FUJITSU CANADA INC. 2800 Matheson Blvd. East, Mississauga, Toronto, Ontario L4W 4X5, CANADA TEL: 1-905-602-5454 FAX: 1-905-602-5457 FUJITSU EUROPE LIMITED 2, Longwalk Road, Stockley Park, Uxbridge, Middlesex U

• C141-E123-01EN 1 - 25 1.4.4 Usage in 8-bit/16-bit transfer mode When the IDD is used as 8-bit SCSI device, it is connected terminating resistor circuit to upper 8- bit and parity (DB08 to DB15 and DBP1) or short set up pin (CN2 13-14). When the IDD is used as 16-bit SCSI device, leave the set up pin Jumper setting “8/16” open. Table 1.11 shows the guide.

• Fujitsu MAN3184 SERIES, C141-E123-01EN 2 - 17 When an SCSI device executes data transfer, it must not send REQ or ACK pulses exceeding the parameter limits which have been set by the two SCSI devices by exchange of the SYNCHRONOUS DATA TRANSFER REQUEST message. However, the SCSI device can transfer data using a larger Transfer Period or a smaller REQ/ACK Offset. After normal exchange of the SYNCHRONOUS DATA TRANSFER REQUEST message, the two SCSI devices shall set the data transfer mode depending on the response (the returned message) by the SCSI device which has first received this message. Table 2.3

• Fujitsu MAN3184 SERIES, xiv C141-E123-01EN TABLES page 1.1 INFORMATION TRANSFER phase identification ....................................................................1 - 6 1.2 Single-Ended maximum distance between terminators................................................................1 - 7 1.3 LVD maximum distance between terminators .............................................................................1 - 8 1.4 SE and LVD Transmission line impedance of cable at maximum indicated data transfer rate..................................................................................................

• Fujitsu MAN3184 SERIES, C141-E123-01EN 3 - 5 Note: The retry count for the timeout of RESELECTION phase can be set by the CHANGE DEFINITION command. For details, see Section 1.6.11. (8) Errors concerning message protocol If the IDD detects an ATTENTION condition in the SELECTION phase and it receives the message except for the following messages from the INIT in its response to the ATTENTION condition (the MESSAGE OUT phase), the IDD considers it as an error in the message protocol and enters the BUS FREE phase immediately. • IDENTIFY • ABORT TASK • TARGET REST (9) Internal co

• Fujitsu MAN3184 SERIES, C141-E123-01EN2 - 20 (b) Transfer mode establishment The default transfer mode is released, and the synchronous transfer mode or the asynchronous transfer mode is selected by the exchange of SYNCHRONOUS DATA TRANSFER REQUEST message. This mode is kept for each INIT individually and data transfer mode and synchronous mode parameters of each INIT differ each other. Data is transferred in the transfer mode selected between the INIT based on the SCSI ID of the INIT which is identified in the SELECTION phase. If the INIT is in this state, the IDD does not send the SYNCHRONOUS DATA TRANSFER REQUEST message to request for reselection of the transfer mode or cha

• Fujitsu MAN3184 SERIES, C141-E123-01EN1-34 (33) pCRC Transmit hold time The minimum time provided by the transmitter between the transition of the REQ signal and the transition of the P_CRCA signal while pCRC protection is enabled. (34) pCRC Transmit setup time The minimum time provided by the transmitter between the transition of the P_CRCA signal and the transition of the REQ signal while pCRC protection is enabled. Specified to provide the increased receive setup time, subject to intersymbol interference, cable skew, and other di

• Fujitsu MAN3184 SERIES, C141-E123-01ENviii MANUAL ORGANIZATION Product/ Maintenance Manual • General Description • Specifications • Data Format • Installation Requirements • Installation • Diagnostics and Maintenance • Error Analysis • Principle of Operation SCSI Physical Interface Specifications • SCSI Bus • SCSI Message • Error Recovery SCSI Logical Interface Specifications • Command Processing • Data Buffer Management • Command Specifications • Parameter Data Formats • Sense Data and Error Recovery Methods �

• Fujitsu MAN3184 SERIES, C141-E123-01EN 2 - 9 The TARG continues command processing by itself, and reconnects the INIT when necessary (by reconnect processing) to continue command execution on the SCSI bus. This message cannot request the INIT for saving of the current data pointer. Note: To start disconnect processing during data transfer, the TARG must send the SAVE DATA POINTER message for saving of data pointer before sending this message. This is required even if all bytes of data specified by the command have already been transferred. 2.3.5 INITIATOR DETECTED ERROR message: X'05'(I → →→ → T) The INITIATOR DETECTED ERROR message informs to the TARG that the INIT

• Fujitsu MAN3184 SERIES, C141-E123-01EN1-6 (2) BSY (BUSY) The BSY signal indicates that the SCSI bus is in use. In the ARBITRATION phase, this signal is used to request for the bus usage priority. (3) SEL (SELECT) The SEL signal is used by the INIT to select a TARG (in the SELECTION phase) or by the TARG to reselect an INIT (in the RESELECTION phase). (4) C/D (CONTROL/DATA) This is a combination of I/O and MSG signals, and specifies a type of information transferred on the data bus. The C/D signal is always driven by the TARG (

• Fujitsu MAN3184 SERIES, C141-E123-01EN 2 - 19 • Reception of the WIDE DATA TRANSFER REQUEST message • Change in the transceiver mode (e.g., LVD mode to SE mode). The default data transfer mode between SCSI devices is asynchronous data transfer. The asynchronous data transfer mode shall be selected when the power supply is turned on, a TARGET RESET message is received, a RESET condition occurs, or a WIDE DATA TRANSFER REQUEST message is received. If the synchronous transfer mode has been selected between SCSI devices and if it is changed to the asynchronous transfer mode for some reasons (s

• Fujitsu MAN3184 SERIES, C141-E123-01EN 1 - 85 The dominant SCAM initiator can classify and assign SCSI IDs in various ways as described below. • SCSI ID classification After the reset, the dominant SCAM initiator waits for a certain period to establish a delay time between the reset and selection of SCAM tolerant. The dominant SCAM initiator initializes the SCSI ID internal table and indicates that all SCSI IDs are not classified yet. Also, the SCAM initiator gets the arbitration and selects the unclassified IDs whose selection timeout delay is greater than the response time of SCAM tolerant selection but less than the response delay of SCAM

• C141-E123-01EN3 - 4 g. SAVE DATA POINTER When rejecting this message for disconnection of the SCSI bus, the IDD continues the currently executing command without disconnection as the DISCONNECT message is rejected. h. SIMPLE When this message sent next to the IDENTIFY message at reconnection is rejected, the IDD immediately enters the BUS FREE phase and terminates the command which has request

• Fujitsu MAN3184 SERIES, C141-E123-01EN1 - 52 Notes: 1. After the ACK signal becomes false in the current INFORMATION TRANSFER phase, the TARG can start preparing a new phase by changing the status of C/D, I/O and MSG signals. The status of these three signals can change in any order or at once. The status of one signal may change more than once; however, the TARG should change the status of each signal only once. 2. A new INFORMATION TRANSFER phase starts when the REQ signal requesting to transfer the first byte in that phase becomes true. The phase ends when one of C/D, I/O and MSG signals changes after the ACK signal has changed to false. The

• Fujitsu MAN3184 SERIES, C141-E123-01EN1 - 86 (2) Level-1 SCAM target Figure 1.36 shows the operations of level-1 SCAM target. Its status names are explained later. The RESET condition can terminate all operations in any status, and it forces the SCAM target to the Reset Delay status. ID Unassingned ID Assingned ID Assingnable ID assignment by using action codes Current ID assignment by SCSI selection Detection of SCAM protocol Configuration Process Complete or false C/D Detection of SCAM protocol ResetPower-on SCAM Monitor Reset DelayPower-on Delay Figure 1.36 State of level-1 SCAM target The SCAM target enters the Power-On Delay status immediately after the power-on, and allows the local initialization to start

• Fujitsu MAN3184 SERIES, C141-E123-01EN1 - 74 ATN transmit setup time. Min. System Deskew Delay × 2 Figure 1.32 ATTENTION condition Note: The ATTENTION condition generated by the INIT determines the message level to be used in the command execution sequence. (Details are explained in Section 2.1.3.) If the ATTENTION condition is not generated, the TARG uses a TASK COMPLETE message only.

• C141-E123-01EN v PREFACE This manual explains the MAN3184/MAN3367/MAN3735 series 3-1/2" intelligent disk drives each having the built-in SCSI controller. This manual details the specifications and functions of the Small Computer System Interface (SCSI) to connect the above listed disk drives to the user system. Also, the manual details various SCSI command specifications and

• Fujitsu MAN3184 SERIES, C141-E123-01EN1-30 (3) Arbitration delay The minimum time a SCSI device shall wait from asserting the BSY signal for arbitration until the DATA BUS is examined to see if arbitration has been won. There is no maximum time. (4) Bus clear delay The maximum time that for a SCSI device to release all SCSI signals after: a) The BUS FREE phase is detected (the BSY and SEL signals are both false for a bus settle delay); b) The SEL signal is received from another SCSI device during the ARBITRATION phase; c) The transition of the RST signal to true. For item a) above, the maximum time for a SCSI device to release all SCSI bus signals is 1200 ns from the BSY and SEL signals first becoming both

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