Deskstar 7K500 and Deskstar E7K500 Hard Disk Drive Specification
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Table 94: Identify device information (Part 6 of 7)
Word Content Description
93 XXXXH Hardware reset result. Bit assignments
15-14 (=01) Word 93 is valid
13 CBLID- status 1=above Vih 0=below Vil
12- 8 Device 1 hardware reset result
Device 0 clear these bits to 0
12 Reserved
11 PDIAG- assertion 1 = asset 0 = not assert
10-9 How to determine the device number:
00= Reserved
01= a jumper was used
10= the CSEL signal was used
11= some other method used or method unknown
8 Shall be set to one if Device 1
7- 0 Device 0 hardware reset result
7 Reserved
6 Respond for Device 1 1= respond 0= not respond
5 DASP- detection 1= detect 0= not detect
4 PDIAG- detection 1= pass 0= fail
3 Device 0 diagnostic 1= pass 0= fail
2-1 How to determine the device number
00=Reserved
01=Jumper
10=CSEL signal
11=Other method
0 Shall be set to one if Device 0
94 XXXXH Current Advanced Acoustic Management value
15- 8 Vendor’s Recommended Acoustic Management level
7- 0 Current Acoustic Management level
95 xxxxH Stream Minimum Request Size
Number of sectors that provides optimum performance in streaming
environment. This number shall be a power of two, with a minimum of
eight sectors (4096 bytes). The starting LBA value for each stream-
ing command should be evenly divisible by this request size.
96 xxxxH Streaming Transfer Time - DMA
The worst-case sustainable transfer time per sector for the device
is calculated as follows:
Streaming Transfer Time = (word 96) * (words(99:98) / 65536)
If the Streaming Feature set is not supported by the device, the
content of word 96 shall be zero.
97 xxxxH Streaming Access Latency - DMA and PIO
The worst-case access latency of the device for a streaming command
is calculated as follows:
Access Latency = (word 97) * (words(99:98) / 256)
If the Streaming Feature set is not supported by the device, the
content of word 97 shall be zero.
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