cn8236 Mindspeed Technologies, cn8236 Datasheet - Page 214
cn8236
Manufacturer Part Number
cn8236
Description
Atm Servicesar Plus With Xbr Traffic Management
Manufacturer
Mindspeed Technologies
Datasheet
1.CN8236.pdf
(443 pages)
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6.0 Traffic Management
6.5 Traffic Management Control and Status Structures
6.5.3 VBR-Specific Structure
Table 6-12. SCH_STATE for SCH_MODE = VBR1 or VBR2
6-46
6.5.3.1 VBR SCH_STATE
Word 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
6.5.3.2 VBR1 or VBR2
7
8
9
Table 6-13. VBR1 and VBR2 SCH_STATE Field Descriptions
Schedule State Table
BUCKET2
L1_EXP
L1_MAN
I1_EXP
I1_MAN
PRESENT
DELTA2_SIGN
DELTA2_NZ
DELTA1_SIGN
DELTA1_NZ
DELTA2_EXP
Field Name
BUCKET2
BUCKET2
(MSB)
(LSB)
DELTA2_EXP
L1_EXP
Index into Bucket table to give I2 and L2 for SCHED_MODE = VBR2 & VBRC. Bucket table base is
given by SEG_BCKB register field. Entries in Bucket table have same format as L1_EXP, L1_MAN,
I1_EXP, and I1_MAN.
GCRA L parameter exponent for bucket 1.
L1_EXP must satisfy
L1_EXP that does not satisfy
GCRA L parameter mantissa for bucket 1.
Bucket 1 L value is:
GCRA I parameter exponent for bucket 1.
I1_EXP must satisfy
GCRA I parameter mantissa for bucket 1.
Bucket 1 I value is:
Current Schedule Table position.
When set, indicates delta is negative for bucket 2.
When set, indicates delta is non-zero for bucket 2.
When set, indicates delta is negative for bucket 1.
When set, indicates delta is non-zero for bucket 1.
Delta exponent for bucket 2.
Tables 6-12
table entry, which consists of words seven through nine for VBR.
See
Section
Mindspeed Technologies
2
10 <= I1_EXP <= 25.
and
L1_EXP <= min(I1_EXP + 9,29).
(I1_EXP - 10)
2
(L1_EXP - 10)
DELTA2_MAN
6.2.4, for key data on I and L values.
6-13
L1_MAN
L1_EXP >= I1_EXP - 9
define the SCH_STATE part of the Segmentation VCC
(1+I1_MAN/512).
(1+L1_MAN/512).
Description
PRESENT
ATM ServiceSAR Plus with xBR Traffic Management
DELTA1_EXP
I1_EXP
™
will have an effective L1 value of zero.
DELTA1_MAN
I1_MAN
28236-DSH-001-B
CN8236
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