參數(shù)資料
型號: KS9245
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: Automated CD-ROM Controller(光盤驅(qū)動器控制器器)
中文描述: 自動CD - ROM控制器(光盤驅(qū)動器控制器器)
文件頁數(shù): 94/102頁
文件大?。?/td> 419K
代理商: KS9245
SAMSUNG
Version: TM 2.4
KS9245 ATAPI Automated CD-ROM Controller
Preliminary Technical Manual
_____________________________________________________________
Do Not Copy or Release
12-1
Chapter 12
Hardware Application Notes
12.1 PIO/DMA Support Modes
The following tables list the various disk speed and PIO/DMA mode which are supported in our
specification.
PIO Mode Summary/Disk Speed
Cycle
Time
600 nsec
yes
383 nsec
yes
240 nsec
yes
180 nsec
yes
120 nsec
yes
PIO Mode
Burst Speed
Support
Remark
Mode 0
Mode 1
Mode 2
Mode 3
Mode 4
3.33 MB/Sec
5.33 MB/Sec
8.33 MB/Sec
11.1 MB/Sec
16.7 MB/Sec
without flow control
without flow control
without flow control
without flow control
without flow control
DMA Mode Summary/Disk Speed
Burst Speed
2.08 MB/Sec
4.17 MB/Sec
8.33 MB/Sec
4.17 MB/Sec
13.3 MB/Sec
16.7 MB/Sec
Single/Multi Word
Single Word Mode 0
Single Word Mode 1
Single Word Mode 2
MultiWord Mode 0
MultiWord Mode 1
MultiWord Mode 2
Cycle Time
960 nsec
480 nsec
240 nsec
480 nsec
150 nsec
120 nsec
Support
yes
yes
yes
yes
yes
yes
Remark
12.2
Firmware Sector Process Time
The following tables list the various disk rate against the worst case time left for firmware to
process a sector after decoder interrupt is generated by hardware.
Firmware sector process time
DSP Rate
Disk
Speed
1X
2X
4X
6X
8X
10X
12X
14X
16X
24X
Sector
Period
13.333 ms
6.666 ms
3.333 ms
2.222 ms
1.666 ms
1.333 ms
1.111 ms
.952 ms
.833 ms
.555 ms
Worst F/W Sector Time
150KB/Sec
300KB/Sec
600KB/Sec
900KB/Sec
1.2MB/Sec
1.5MB/Sec
1.8MB/Sec
2.1MB/Sec
2.4MB/Sec
3.6MB/Sec
6.666 msec
3.333 msec
1.666 msec
1.111 msec
.833 msec
.666 msec
.555 msec
.476 msec
.416 msec
.277 msec
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