CN8237EBGB Mindspeed Technologies, CN8237EBGB Datasheet - Page 216

• 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

7.0 OAM Functions
7.2 Segmentation of OAM Cells
7.1.4 Global Queue Processing of OAM
7-6
Table 7-4. OAM Type and Function Type Identifiers
Fault Management
Performance Management
Activation/Deactivation
NOTE(S):
(1)
(2)
OAM Type indicates the type of management function performed by this cell; for example, fault management,
performance management, etc.
Function Type indicates the actual function performed by this cell within the management type indicated by the
OAM Type field.
OAM Type
(1)
Recommendation I.610 are listed in
ATM carries with it significant network management overhead. The CN8237
supports those robust OAM features described previously. Due to the breadth of
ATM applications and the continuing evolution of ATM management standards, it
is essential that a range of flexibility be provided in the processing of network
management overhead.
queues (OAM_BFR_QU and OAM_STAT_QU, addresses for both assigned in the
RSM_CTRL1 register). If the OAM_QU_EN bit in the RSM_CTRL1 register is
set to a logic high, then the CN8237 routes OAM traffic to these global queues. In
addition, the global OAM segmentation status queue,
SEG_CTRL(OAM_STAT_ID), is used if the OAM_STAT bit in the segmentation
buffer descriptor is a logic high.
7.2 Segmentation of OAM Cells
The host places OAM cells in a single buffer, and thus allocates a single
segmentation buffer descriptor (SBD) for the OAM cell data buffer, not a linked
list of SBDs.
entry, and sets the VLD bit to 1.
submits the OAM cell data buffer to the xBR Traffic Manager and the cell is thus
scheduled for transmission.
The OAM Type and Function Type identifiers as specified by ITU-T
To accomplish this, the CN8237 provides global OAM buffer and status
The host then writes a pointer to that SBD in the next available transmit queue
When the segmentation coprocessor processes that transmit queue entry, it
Mindspeed Technologies
Coding
0001
0010
1000
ATM OC-12 ServiceSAR Plus with xBR Traffic Management
AIS
RDI
Continuity Check
Loopback
Forward monitoring
Backward reporting
Performance Monitoring
Continuity Check
Function Type
Table
™
7-4.
(2)
28237-DSH-001-C
Coding
0000
0001
0100
1000
0000
0001
0000
0001
CN8237