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Chapter 1 37
Feature • Upstream accelerated Hub architecture interface for access to GMCH
• PCI interface (six PCI Request/Grant pairs)
• Bus master IDE controller (support Ultra 33/66/100)
• Serial ATA (SATA) controller
• USB 1.1 and USB 2.0 host controller
• AC’97 2.3 interface
• Low Pin Count (LPC) interface
• IRQ controller
• Enhanced DMA controller, interrupt controller, timers, RTC
• Power management
Seagate
Model ST9120821AS ST9120824AS ST98823AS
Drive Specification
Formatted Gbytes (512 bytes/sector) 120 100 80
Physical read/write head 4 4 3
Discs 2 2 2
Spindle Speed (RPM) 5400
Internal transfer rate (Mbytes/sec.
max.)
57.6
I/O data transfer rate (Mbytes/sec.
max.)
150
ATA data transfer mode supported SATA 1.0, SATA II
PIO modes 0-4
Multiword DMA modes 0-2
Ultra DMA modes 0-6
Bytes per sector 1024
Average latency 5.56
Average seek, read (msec. typical) 12.5
Average seek, write (msec. typical) 14.5
Cache buffer 8 Mbytes
Startup current (typical, peak) +5V: 1.1A
Ambient temperature
5 to 55
o
C (operating), -40 to 70
o
C (nonoperating)
Temperature gradient (
o
C per hour
max.)
20
o
C (operating), 30
o
C (nonoperating)
Relative humidity 5% to 90% (operating), 5% to 95% (nonoperating)
Relative humidity gradient 30% per hour max.
Drive acoustics, sound power (bels)
idle
2.4 (typical), 2.6 (max)
Shock, operating (Gs max. at 0.5
msec.)
250
Shock, nonoperating (Gs max. at 2
msec.)
800
Vibration, operating 1.0 G (0 to peak, 5-500 Hz)
Vibration, nonoperating 5 Gs (0 to peak, 5-500 Hz)
Nonrecoverable read errors
1 per 10
14
bits read, max.
Item Specification