CN8237EBGB Mindspeed Technologies, CN8237EBGB Datasheet - Page 311

• 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
0x1e8
28237-DSH-001-C
30–28
26–24
23–20
19–17
16–13
9–5
4–0
Bit
31
27
12
11
10
—
Reassembly Control Register 1 (RSM_CTRL1)
Field
Size
1
3
1
3
4
3
4
1
1
1
5
5
EN_PROG_BLK_SZ
VCI_IT_BLK_SZ
EN_VPI_SIZE
Reserved
Reserved
Reserved
Reserved
OAM_FF_DSC
OAM_EN
OAM_QU_EN
OAM_BFR_QU
OAM_STAT_QU
The Reassembly Control register 1 contains additional general control bits for the
reassembly coprocessor.
Name
Mindspeed Technologies
Enable Programmable Block Size. When a logic high, the programmable
block size VPI/VCI lookup method is enabled. This method consists of
programmable block sizes, and an additional BLK_EN bit in the VCI Index
table.
VCC table/VCI Index table Block Size. This field determines the number of
RSM VCC entries accessed per VCI Index table entry.
Enable Programmable VPI size via VPI_SIZE register. When a logic high, an
expanded more flexible VPI Index Table configuration is enabled. The
VPI_SIZE register and PORT_ID from the framer are used to calculate an
index into the VPI Index table.
Program and read as 0.
Program and read as 0.
Program and read as 0.
Program and read as 0.
OAM FIFO Buffer Full Discard. When a logic high and OAM_QU_EN is a logic
high, an OAM cell will be discarded if the incoming DMA FIFO buffer is
almost full.
OAM Enable. Enables detection and processing of OAM cells.
OAM Buffer/Status Queue Enable. When a logic high, an OAM cell uses the
global OAM free buffer queue and status queue instead of per-channel
resources.
OAM Free Buffer Queue. When OAM_QU_EN is a logic high, OAM cells use
buffers from the free buffer queue identified by OAM_BFR_QU.
OAM Status Queue. When OAM_QU_EN is a logic high, OAM cells posts
status to the status queue identified by OAM_STAT_QU.
000
001
010
011
100
101
110
111
VALUE
™
Description
1
2
4
8
16
32
64
Not valid
VCC BLOCK_SIZE
14.5 Reassembly Registers
14.0 CN8237 Registers
14-21