C.1.8.1 CD-ROM Drive

The CD-ROM drive is a standard SCSI interface device with multimedia features. This includes multi-session capability and fast access (12X-speed) for image and video data. The CD-ROM drive dimensions are 5.94 inch (149.5 mm) x 7.78 inch (196 mm) x 1.71 inch (43 mm) and the drive slot is a standard 1.6-inch (40.64 mm) bay that uses industry standard bezels. Headphone access, eject, pin eject, and volume control are available on the front panel. Audio from the CD is available through either the front panel headphone connection, the line-out connector at the system unit rear (accessible by cabling from front to rear), or the internal speaker.

The CD-ROM drive supports an approximate data transfer rate of 600 Kbyte/s and an access time of 350 ms (maximum). The SunCD 12X Installation and User’s Guide, part number 805-0940, provides cleaning, jumper setting, and operation instructions for the CD-ROM drive.

C.1.8.2 Diskette Drive

The system unit uses a standard 1.44-Mbyte diskette drive that is 1 inch (25.40 mm) high. The system-to-diskette drive interface is an 82077 style interface. Refer to the Manual Eject Diskette Drive Specifications, part number 805-1133, for cleaning, jumper setting, and instructions for the diskette drive.

SuperIO Diskette Drive Interface

The SuperIO component contains an onboard diskette drive controller. There is a

16-byte first-in-first-out (FIFO) device that buffers and supports burst and non-burst modes. The diskette drive controller handles data rates of 500 Kbps and 250 Kbps.

Supported Features

Two additional pins on the Cheerio ASIC combine with the SuperIO diskette drive interface to support all standard Sun diskette drives. This includes Density_Select-type diskette drives, Density_Sense-type diskette drives, and diskette drives that use a Disk_Change signal.

Diskette Drive Connectors

Power is supplied to the diskette drive from a pigtailed connector at the power supply. The diskette drive operates from a 5-Vdc supply and uses a maximum power of 1.1 watts during operation. A maximum of 44 milliwatts is used during

C-16Sun Ultra 60 Service Manual • August 2001

Page 216
Image 216
Sun Microsystems 60 service manual CD-ROM Drive, Diskette Drive