T8207 Datasheet, PDF (38/158 Pages) Agere Systems – ATM Interconnect

CelXpres T8207
ATM Interconnect
Advance Data Sheet
September 2001
8 Look-Up Table (continued)
Because the translation records are larger in extended mode, the look-up table memory map changes, the transla-
tion record address calculations change, and the memory size calculations change. Figure 9 shows the new trans-
lation RAM memory map for 16-byte records when the device is configured for 16 or less PHY ports. When greater
than 16 PHY ports are used, the look-up table is shared between even and odd ports. Figure 10 shows this trans-
lation RAM memory map.
0000h
0400h
0800h
0C00h
1000h
1400h
1800h
1C00h
2000h
2400h
2800h
2C00h
3000h
3400h
3800h
3C00h
4000h
7FFFFh
ROUTING LOOK-UP MEMORY MAP
OAM CELL ROUTING PORT 0
OAM CELL ROUTING PORT 1
OAM CELL ROUTING PORT 2
OAM CELL ROUTING PORT 3
OAM CELL ROUTING PORT 4
OAM CELL ROUTING PORT 5
OAM CELL ROUTING PORT 6
OAM CELL ROUTING PORT 7
OAM CELL ROUTING PORT 8
OAM CELL ROUTING PORT 9
OAM CELL ROUTING PORT 10
OAM CELL ROUTING PORT 11
OAM CELL ROUTING PORT 12
OAM CELL ROUTING PORT 13
OAM CELL ROUTING PORT 14
OAM CELL ROUTING PORT 15
ANY PURPOSE LOOK-UP MEMORY
SHARED BETWEEN EACH OF THE
16 PORTS
+0000h
+01F0h
+0200h
+0210h
+0220h
+0230h
+0240h
+0250h
+0260h
+03F0h
OAM CELL ROUTING PORT X RECORD MAP
VP OAM VCI = 0 (F4)
•
•
•
VP OAM VCI = 31 (F4)
VP OAM VCI = 6 & PT = “110” (F4) (RM-VPC)
VC OAM PTI = “100” (F5)
VC OAM PTI = “101” (F5)
VC OAM PTI = “110” (F5)
VC OAM PTI = “111” (F5)
RESERVED
RESERVED
•
•
•
RESERVED
Figure 9. Translation RAM Memory Map—Extended Mode, for Up to 16 Ports
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