CONFIDENTIAL
PRELIMINARY
CYNSE10512
CYNSE10256
CYNSE10128
Document #: 38-02069 Rev. *F
Page 31 of 153
5.4.7
Write Burst Address Register (WBURREG)
Table 5-8 describes the Write Burst Address register fields. These must be programmed before issuing a Burst-Write operation.
5.4.8
Next-free Address Register (NFA)
The NFA register is used only when the device operates in the Non-Enhanced mode. The NFA register’s Index field (Table 5-9)
holds the address of the highest priority free entry in the table. When the table is full, the Index field will be set to all 1s. When all
entries in the device is full, the Ayama 10000 will assert FULO[1:0] to “11”.
Table 5-8. Write Burst Register Description
Field
Range
(decimal)
Initial Value
(binary)
Description
INDEX
[N:0]
0
Index. This field is used to identify the starting address of the data or mask
array in a Burst-Write operation. The NSE will automatically increment the
value by one after each successive Write of the data or mask array. It must
be reinitialized before the next Burst-Write operation. N = 17 for
CYNSE10512, 16 for CYNSE10256, 15 for CYNSE10128.
[18:M]
Reserved. M = 18 for CYNSE10512, 17 for CYNSE10256, 16 for
CYNSE10128.
BLEN
[27:19]
0
Length of Burst Access. The device provides the capability to Write from
4 to 511 locations in a single burst. The NSE automatically decrements the
value by one after each successive writing of the data or mask array. It must
be reinitialized before the next Burst-Write operation.
[71:28]
Reserved.
Table 5-9. NFA Register Description
Field
Range
(decimal)
Initial Value
(binary)
Description
Index
[N:0]
0
Index. The address index of the next-free entry location. N = 17 for
CYNSE10512, 16 for CYNSE10256, 15 for CYNSE10128.
[71:M]
Reserved. M = 18 for CYNSE10512, 17 for CYNSE10256, 16 for
CYNSE10128.
7
15
23
0
39
47
55
31
63
71
INDEX
BLEN
N = 15 for CYNSE10128
N = 16 for CYNSE10256
N = 17 for CYNSE10512
Figure 5-14. Write Burst Address Register
7
15
23
0
39
47
55
31
63
71
INDEX
N = 15 for CYNSE10128
N = 16 for CYNSE10256
N = 17 for CYNSE10512
Figure 5-15. Next-free Address Register
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