SPRUJ42 User guide

SPRUJ42E March 2022 – October 2024 AM2631 , AM2631-Q1 , AM2632 , AM2632-Q1 , AM2634 , AM2634-Q1

PRODUCTION DATA

5.1.2.379 CPSW_NC_ALE_STATUS Register

1.2.379.1 CPSW_NC_ALE_STATUS Register (Offset = 3E004h) [reset = 80000400h]

The ALE status provides information on the ALE configuration and state. The ramdepth is used to determine how IPv6 entries are stored in the table. IPv6 entries are stored in two entries where IPv6 Entry Hi is designated by the odd slice index and Lo is designated by the even slice index. The slice index is above the ram depth like {SliceIndex,RamIndex}. So, for a 64 deep RAM index of 0x005, the Hi portion of the IPv6 entry is located at 0x005|(0x040) and the Lo portion is located at 0x005 & (~0x040).

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Table 5-758 Instance Table

Instance Name	Physical Address
CPSW0	5283 E004h

Figure 5-379 CPSW_NC_ALE_STATUS Name Register

31	30	29	28	27	26	25	24
UREGANDREGMSK12	UREGANDREGMSK08	RESERVED
R	R	NONE
1h	0h	0h
23	22	21	20	19	18	17	16
RESERVED
NONE
0h
15	14	13	12	11	10	9	8
POLCNTDIV8
R
4h
7	6	5	4	3	2	1	0
RAMDEPTH128	RAMDEPTH32	RESERVED	KLUENTRIES
R	R	NONE	R
0h	0h	0h	0h

Table 5-759 CPSW_NC_ALE_STATUS Register Field Descriptions

Bit	Field	Type	Reset	Description
31	UREGANDREGMSK12	R	1h	When set, the unregistered multicast field is a mask versus an index on 12 bit boundary in the ALE table.
30	UREGANDREGMSK08	R	0h	When set, the unregistered multicast field is a mask versus an index on 8 bit boundary in the ALE table.
29:16	RESERVED	NONE	0h	Reserved
15:8	POLCNTDIV8	R	4h	This is the number of Classifiers the ALE implements divided by 8. A value of 4 indicates 32 policer engines total.
7	RAMDEPTH128	R	0h	The number of ALE entries per slice of the table when this is set it indicates the depth is 128 if both ramdepth128 and ramdepth32 are zero the depth is 64.
6	RAMDEPTH32	R	0h	The number of ALE entries per slice of the table when this is set it indicates the depth is 32 if both ramdepth128 and ramdepth32 are zero the depth is 64.
5	RESERVED	NONE	0h	Reserved
4:0	KLUENTRIES	R	0h	This is the number of table entries total divided by 1024. A value of 1 indicates 1024 table entries. A value of 8 indicates 8192 table entries.