Seagate Medalist 2160N (ST52160N), Product Manual

Page: 120 / 138

C.6.3 Caching page description
The Caching page is shown below. This table summarizes the function,
the default value and the changeability of each bit.
Bytes
Bits
7 6 5 4 3 2 1 0
0 PS (1) Page code (08
H
)
1 Page length (12
H
)
2 IC ABPF CAP DISC SIZE WCE MF RCD
default 1 0 0 1 0 1 0 0
changeable 0 0 0 0 0 1 1 1
3
Demand read
retention priority
Write retention priority
default 0 0 0 0 0 0 0 0
changeable 0 0 0 0 0 0 0 0
4–5 (default) Disable prefetch transfer length (FFFF
H
)
changeable 0000
H
6–7 (default) Minimum prefetch (0000
H
)
changeable FFFF
H
8–9 (default) Maximum prefetch (FFFF
H
)
changeable FFFF
H
10–11 (default) Maximum prefetch ceiling (FFFF
H
)
changeable FFFF
H
12 FSW Rsrvd DRA Reserved
default 1 0 0 0 0 0 0 0
changeable 0 0 1 0 0 0 0 0
13 Number of cache segments
default 01
H
changeable FF
H
14–15 (default) Cache segment size (0000
H
)
changeable 0000
H
16 (default) Reserved (00
H
)
changeable 00
H
17–19 (default) Noncache segment size (000000
H
)
changeable 000000
H
110 Medalist Pro 2160N/2160WC Product Manual, Rev. A