mt90502ag2 Zarlink Semiconductor, mt90502ag2 Datasheet - Page 108

• Manufacturer Part Number: mt90502ag2
• Description: Multi-channel Aal2 Sar
• Manufacturer: Zarlink Semiconductor

*Note that not all circular buffers have to be used. If memory is not available for cer tain
circ ular buf fers jus t don’t ass ign them.
+005FC0h
+0071FCh
+027C00h
+01C7FCh
+000000h
+003F80h
+004000h
+006000h
+006F00h
+007000h
+008000h
+017FC0h
+01BF00h
+01C000h
+09FC00h
+000000h
+00FF80h
+010000h
+018000h
+020000h
Figure 66 - RX SSRAM Memory Mapping for Fixed Structures
CPS-Packet Descriptor Queue
CPS-Packet Descriptor Queue
CPS-Packet Circular Buffers*
CPS-Packet Descriptor Queue
CPS-Packet Descriptor Queue
Mini-pac ket queue pointers
CPS-Packet Circular Buffers*
(512 Buffers = 128K/512K)
Mini-pac ket queue pointers
RX AAL2 VC Structures
(512 Buf fers = 128K/512K)
CPS-Packet Disassembly
HDLC/PCM Disas sembly
(128 Structures = 512B)
(128 Buffers = 32K/128K)
(128 Buf fers = 32K/128K)
HDLC/PCM Disas sembly
(128 Structur es = 512B)
Mini-Pac ket Descriptors
RX AAL2 VC Structures
(128 Structures = 8K)
Mini-Pac ket Descriptors
(512 Structures = 32K)
CPS-Packet Disassembly
(512 Structures = 2K)
(128 Structur es = 16K)
(512 Structur es = 64K)
(512 Structur es = 32K)
(512 Structur es = 16K)
(128 Structur es = 8K)
(128 Structur es = 4K)
(512 Structur es = 2K)
AA L2 VC Structures
AA L2 VC Structures
Pointers
128
Circular Buffers *
512
Circular Buffers *
Structures
Pointers
Structures
Str uctures
Str uctures
Cha nne ls
Cha nne ls
R X SSRAM Memory M apping
Zarlink Semiconductor Inc.
MT90502
108
+00BFC0h
+00E3FCh
+02FFC0h
+038FFCh
+13FC00h
+00C000h
+00DF00h
+00E000h
+04FC00h
+000000h
+01FF80h
+020000h
+030000h
+037F00h
+038000h
+040000h
+000000h
+007F80h
+008000h
+010000h
CPS-Packet Circular Buffers*
CPS-Packet Descriptor Queue
CPS-Packet Descriptor Queue
CPS-Packet Descriptor Queue
(256 Buffers =642K/256K)
CPS-Packet Descriptor Queue
CPS-Packet Circular Buffers*
(1024 Buffers = 256K/1024K)
RX AAL2 VC Structures
(256 Structures = 1K)
RX AAL2 VC Structures
CPS-Packet Disassembly
(1024 Buffers = 256K/1024K)
Mini-pac ket queue pointers
Mini-pac ket queue pointers
(256 Structures = 16K)
CPS-Packet Disassembly
(1024 Structures = 64K)
(1024 Structures = 4K)
(1024 Struc tures = 128K)
HDLC/PCM Disas sembly
HDLC/PCM Disas sembly
(256 Buf fers = 64K/256K)
(1024 Struc tures = 64K)
(1024 Struc tures = 32K)
1023 Channels
Mini-Pac ket Descriptors
Mini-Pac ket Descriptors
(1024 Struc tures = 4K)
(256 Structur es = 32K)
(256 Structur es = 16K)
(256 Structur es = 8K)
(256 Structur es = 1K)
AA L2 VC Structures
AA L2 VC Structures
Structures
Structures
Pointers
1024
Pointers
256
Circular Buffers *
Circular Buffers *
Str uctures
Str uctures
Cha nne ls
Cha nne ls
Reser ved
Data Sheet