CN8237EBGB Mindspeed Technologies, CN8237EBGB Datasheet - Page 29

• Manufacturer Part Number: CN8237EBGB
• Description: ATM SAR 622Mbps 3.3V ABR/CBR/GFR/UBR/VBR 456-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of CN8237EBGB

• Package: 456BGA
• Traffic Class: ABR|CBR|GFR|UBR|VBR
• Utopia Type: Level 1|Level 2
• Host Interface: PCI
• Maximum Data Rate: 622 Mbps
• Typical Operating Supply Voltage: 3.3 V
• Minimum Operating Supply Voltage: 3.135 V

CN8237
ATM OC-12 ServiceSAR Plus with xBR Traffic Management
Figure 1-1. CN8237 Functional Block Diagram
28237-DSH-001-C
Interface
PCI Bus
94
Master/Slave
Master
Slave
Logic
Logic
Bus
PCI
PCI
PCI
Domain)
Clock
(PCI
1.2 Service-Specific Performance Accelerators
The CN8237 incorporates several service-specific features, which accelerate
system performance. Some of these service level features provide the possibility
for designers to accelerate specific protocol interworking functions. Other service
level features enable network level functionality. These features are outlined in
Chapter
Internal SRAM
Control/Status
8192 bytes)
2048 bytes
64 bytes)
(Depth =
(Depth =
Registers,
Counters,
Burst
Burst
FIFO
FIFO
Figure 1-1
or
and
(System Clock
Coprocessor
2.0, and are fully described in succeeding chapters.
Segmentation
Domain)
Mindspeed Technologies
Memory
Memory Bus
DMA
Arbiter
Incoming
Outgoing
Channel
Channel
RSM Local
DMA
DMA
illustrates CN8237’s coprocessors and interfaces.
RSM Local
SEG Local
Memory
Interface
Memory
Interface
67
Reassembly Block
Segmentation
67
SEG Local
Memory Bus
Coprocessor
Reassembly
ABR Flow Control
xBR Scheduler /
Segmentation
Coprocessor
Block
Mgr.
xBR Traffic
Reassembly
Manager
Memory
(32 bit)
Clock/
Timer
Arbiter
1.2 Service-Specific Performance Accelerators
™
256 bytes)
512 bytes)
(Depth =
(Depth =
FIFO
FIFO
RX
TX
(ATM PHY Interface
(Boundary Scan
Clock Domain)
Clock Domain)
Device Control
1.0 CN8237 Product Overview
Physical
Boundary
Scan
Physical
Physical
Port
Port
RX
TX
5
Test Bus
26
26
ATM
UTOPIA
Receive
Interface
ATM
UTOPIA
Transmit
Interface
29
PHY
Micro-
processor
Interface
8237_008
1-3