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CDU-541 CD-ROM DRIVE SCSI INTERFACE MANUAL
Table 5-40: Buffer Full Ratios
==============================================================================
Value
Number of
Number of
Value
Number of
Number of
of Buffer
2048 byte
2336/2340
of Buffer
2048 byte
2336/2340
Full Ratio
blocks
blocks
Full Ratio
blocks
blocks
---------- ---------
---------
----------
---------
---------
OOh
32
2B
01h - 08h
1
1
Blh
- BBh
17
15
09h - 10h
2
2
89h - 90h
18
16
llh - 18h
3
3
91h - 98h
19
1T
19h - 20h
4
4
99h - AOh
20
18
21h - 28h
5
5
A1h - A8h
21
19
29h - 30h
6
6
A9h - BOh
22
20
31h - 38h
7
7
B1h - B8h
23
21
39h - 40h
8
8
B9h - COh
24
21
41h - 48h
9
8
C1h - C8h
25
22
49h - 50h
10
9
C9h - DOh
26
23
51h - 58h
11
10
D1h - D8h
27
24
59h - 60h
12
11
D9h - EOh
28
25
61h - 68h
13
12
E1h - E8h
29
26
69h - 70h
14
13
E9h - FOh
30
27
71h - 78h
15
14
F1h - F8h
31
28
79h - BOh
16
15
F9h - FFh
32
28
==============================================================================
The Bus Inactivity Limit indicates the maximum time in 100 microsecond
increments that the
controll~r
will assert the BSY signal without a REQ/ACK
handshake.
If the Bus Inactivity Limit is exceeded the controller will
disconnect if the initiator has granted the disconnect privilege.
The
controller may round to its nearest capable value.
A value of zero allows the
controller to assert BSY until completion of the command.
The default value
of Bus Inactivity Limit is zero.
The Disconnect Time Limit indicates the minimum time in 100 microsecond
increments that the controller will delay reselection. The controller may
round to its nearest capable value.
A value of zero allows the controller
initiate a reselection without a delay.
The default value of Disconnect Time
Limit is zero.
The Connect Time Limit indicates the maximum time in 100 microsecond
increments that the controller will use the bus before disconnecting if the
initiator has granted the disconnect privilege.
The controller may round to
its nearest capable value.
A value of zero allows the controller to determine
if and when a disconnect occurs.
The default value of Connect Time Limit is
zero.
5-72
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