X1DE-31U USB 3.5" Micro Floppy Disk Drive

Transcription

1 USB 3.5" Micro Floppy Disk Drive Features Introduction This material provides the information necessary to interface the X1 series micro floppy disk drives to floppy disk controllers, and provides all the information usually needed to integrate the X1 series of disk drives into a computer system. 2 /1.6 /1 MB Compact size mm H x 96mm W x 130mm D Single power operation ~ 5.5 V Light Weight - 158g USB Interface Low Power Consumption W(read), W (standby) High Vibration Resistance - (0.5 G) (5-500 Hz) Operate, (4.5 G) (5-500 Hz) Standby Applications Portable or Desktop Computers Made by Citizen Watch Co., Ltd. Tokyo, Japan Page Version 1.0

2 Specifications Summary 1. Performance Specifications 1MB mode 1.6MB mode 2MB mode Capacity (Kbytes) Unformatted Per Disk Per Surface Per Track Formatted Per Disk 256B / Sector (16) 1025 (26) 1311 (32) 512B / Sector (9) 1183 (15) 1475 (18) 1024B / Sector (5) 1311 (8) 1638 (10) Transfer Rate (Kbit / sec) Average Latency (msec) Access Time (msec) Track to Track Without Setting Average With Setting Setting Time (msec) Motor Start Time (sec) Functional Specifications 1MB mode 1.6MB mode 2MB mode Rotational Speed (r.p.m.) Recording Density (BPI) Track Density (TPI) Tracks Encoding Methode MFM MFM MFM Page Version 1.0

3 3. Physical Specifications Environmental Limits Operating Shipping Storage Ambient Temperature 5 C to 45 C -40 C to 60 C -20 C to 50 C Relative Humidity 20 to 80% 8 to 90% 8 to 80% Maximum Wet Bulb 85 F (29.4 C) no condensation no condensation DC Voltage Requirement +4.5 V to +5.5 V DC Power Current Motor start ( 5 V ) 510 ma typ. Read 200 ma typ. Write 200 ma typ. Seek ( 5 V ) 500 ma typ. Stand by 3 ma typ. Mechanical Dimensions Height 0.5 inch (12.7mm) Width 3.8 inch (96 mm) Depth 5.13 inch (130 mm) without panel Weight 0.33 lb (158 g) Shock Operating 10Gs with duration of 11 msec ( No hard error ) 3Gs with duration of 11 msec ( No soft error ) Non-Operating 100Gs with duration of 11 msec Vibration Operating Non-Operating Frequency Displacement Acceleration 5-20 Hz 0.01 inch Hz *0.5G 5-20 Hz 0.12 inch Hz 4.5G * Except reasonant frequency Page Version 1.0

4 4. Reliability Specifications MTBF 10,000 power on hours under typical usage MTTR 30 minutes Life 5 years Error Rates 9 Soft Read Error 1 per 10 bits read 12 Hard Read Error 1 per 10 bits read 6 Seek Error 1 per 10 seeks Media Life Passes per Track 3.0 x 10 6 Insertions 30,000+ times Electrical Interface 1. Block Diagram USB Connector Head Media SYSTEM PCB Stepping Motor FDD PCB Fig 1 Block Diagram Spindle Motor 2. USB Specification The drive has following specification. Method USB specification Rev. 1.0 Transfer Rate Full Speed ( 12Mbps ) Signal Level Meet USB specification ( >200 mv ) OS Windows 98 Fig 2 USB Specification Page Version 1.0

5 7. Power Interface 1) Power Supply Specifications Power supply and current are shown in below Figure and Table. POWER CONSUMPTION MOTOR ON SEEK READ WRITE STANDBY FIG 3 Power Consumption Diagram Table 5 Power Supply Current MODE SPINDER MOTOR SEEK READ WRITE STANBY ON (PEEK) TIME (ms) 20ms 15ms PEAK TYPICAL 510mA 500mA 200mA 200mA 3.0mA Vcc=5V Physical Interface 1. Cable Connections The electrical interface between this drive and the host system via USB connector. USB Connector USB Drive Cable : 50 cm max. Fig 4 Connectors Page Version 1.0

6 Mechanical Dimension 2~M2.6 USB-1/F CONNECTOR 2.5±0.15 Shield Cover 2.5± ±0.2 4±0.1 21±0.2 90± ±0.3 90± ±0.2 2 LED 26.1± ±0.2 11±0.2 Front Shutter Eject Button Page Version Media Opening

7 Recording Format 1. Recommended Format The format of the data recorded on the disk is totally a function of the host system, and can be designed around the user's application to take best advantage of the total available bits that can be written on any track. The following tables and figures shows the typical record formats. Table 7 Recommended 1 MB Format FM/MFM IBM Format ISO Format 128/256 bytes/sector 15 sectors (FM) 16 sector 16 sectors (MFM) 256/512 bytes/sector 9 sectors 9 sectors 512/1024 bytes/sector 4 sectors 5 sectors Table 8 Recommended 1.6 MB Format FM/MFM IBM Format 128/256 bytes/sector 26 sectors 256/512 bytes/sector 15 sectors 512/1024 bytes/sector 8 sectors Table 9 Recommended 2 MB Format FM/MFM IBM Format 128/256 bytes/sector 32 sectors 256/512 bytes/sector 18 sectors 512/1024 bytes/sector 10 sectors Page Version 1.0

8 ID FIELD SECTOR 1 DATA FIELD GAP3 GAP4b GAP4a SYNC INDEX GAP1 SYNC ID ADD C H R N CRC GAP2 SYNC DATA DATA CRC GAP3 SYNC GAP4b MARK MARK 1 2 MARK 1 2 SINGLE BYTE (10) DENSITY DATA(16) FF 00 FC* FF 00 FE* FF 00 FB* DATA FF 00 FF DOUBLE BYTE(10) DENSITY DATA(16) 4E 00 *C2 FC 4E 00 *A1 FE 4E 00 *A1 FB DATA 4E 00 4E PREAMBLE SECTOR SINGLE DOUBLE DATA GAP3 GAP4 SECTOR/ TRACK SINGLE DENSITY DOUBLE DENSITY DATA CLOCK DATA CLOCK INDEX ADDRESS MARK FC D7 FC, F1 14,01 ID ADDRESS MARK FE C7 A1, FE 0A, 00 DATA ADDRESS MARK F8 C7 A1, F8 0A, 00 SELECTED DATA ADDRESS MARK F8 C7 A1, F8 0A, 03 GAP FF FF 4E 90 SYNC 00 FF 00 FF INDEX MARK - - C2 14 ADDRESS MARK - - A1 0A Fig 7 1.0MB IBM Format SECTOR 1 ID FIELD DATA FIELD GAP3 GAP4 GAP1 SYNC ID ADD C H R N CRC GAP2 SYNC DATA DATA CRC GAP3 SYNC GAP4b MARK 1 2 MARK 1 2 SINGLE BYTE (10) DENSITY DATA(16) FF 00 FE* FF 00 FB* DATA FF 00 FF DOUBLE BYTE(10) DENSITY DATA(16) 4E 00 *A1 FE 4E 00 *A1 FB DATA 4E 00 4E PREAMBLE SECTOR SINGLE DOUBLE DATA GAP3 GAP4 SECTOR/ TRACK Fig 8 1.0MB ISO Format Page Version 1.0

9 ID FIELD SECTOR 1 DATA FIELD GAP3 GAP4b GAP4a SYNC INDEX GAP1 SYNC ID ADD C H R N CRC GAP2 SYNC DATA DATA CRC GAP3 SYNC GAP4b MARK MARK 1 2 MARK 1 2 SINGLE BYTE (10) DENSITY DATA(16) FF 00 FC* FF 00 FE* FF 00 FB* DATA FF 00 FF DOUBLE BYTE(10) DENSITY DATA(16) 4E 00 *C2 FC 4E 00 *A1 FE 4E 00 *A1 FB DATA 4E 00 4E PREAMBLE SECTOR SINGLE DOUBLE DATA GAP3 GAP4 SECTOR/ TRACK SINGLE DENSITY DOUBLE DENSITY DATA CLOCK DATA CLOCK INDEX ADDRESS MARK FC D7 FC, F1 14,01 ID ADDRESS MARK FE C7 A1, FE 0A, 00 DATA ADDRESS MARK F8 C7 A1, F8 0A, 00 SELECTED DATA ADDRESS MARK F8 C7 A1, F8 0A, 03 GAP FF FF 4E 90 SYNC 00 FF 00 FF Fig 9 1.6MB IBM Format ID FIELD SECTOR 1 DATA FIELD GAP3 GAP4b GAP4a SYNC INDEX GAP1 SYNC ID ADD C H R N CRC GAP2 SYNC DATA DATA CRC GAP3 SYNC GAP4b MARK MARK 1 2 MARK 1 2 SINGLE BYTE (10) DENSITY DATA(16) FF 00 FC* FF 00 FE* FF 00 FB* DATA FF 00 FF DOUBLE BYTE(10) DENSITY DATA(16) 4E 00 *C2 FC 4E 00 *A1 FE 4E 00 *A1 FB DATA 4E 00 4E PREAMBLE SECTOR SINGLE DOUBLE DATA GAP3 GAP4 SECTOR/ TRACK SINGLE DENSITY DOUBLE DENSITY DATA CLOCK DATA CLOCK INDEX ADDRESS MARK FC D7 FC, F1 14,01 ID ADDRESS MARK FE C7 A1, FE 0A, 00 DATA ADDRESS MARK F8 C7 A1, F8 0A, 00 SELECTED DATA ADDRESS MARK F8 C7 A1, F8 0A, 03 GAP FF FF 4E 90 SYNC 00 FF 00 FF Page 9 Fig MB IBM Format 3.99 Version 1.0