RS8234 Mindspeed Technologies, RS8234 Datasheet - Page 209
RS8234
Manufacturer Part Number
RS8234
Description
Atm Servicesar Plus With Xbr Traffic Management
Manufacturer
Mindspeed Technologies
Datasheet
1.RS8234.pdf
(401 pages)
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Table 6-26. ABR Rate Decision Block (ARDB)
RS8234
ATM ServiceSAR Plus with xBR Traffic Management
28234-DSH-001-B
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
Table 6-27. ARDB Field Descriptions
0
1
2
3
4
5
6
7
ACR_EN
CONG_EN
TA_OOR
SET_OOR
L_EXP
L_MAN
I_EXP
I_MAN
CONG_ER
ACR
ACR_INDEX
ACR_TO
NEW_RATE7 -
NEW_RATE0
Field Name
L_EXP
ACR “Use-It-Or-Lose-It” behavior enabled on rate.
Enable congestion rate adjustment on rate.
Out of rate RM cell turnaround enabled on rate.
Rate is below schedule table min rate. Enable out-of-rate Forward RM generation to restart VCC.
GCRA L parameter exponent for ER rate.
GCRA L parameter mantissa for ER rate.
GCRA I parameter exponent for ER rate.
GCRA I parameter mantissa for ER rate. I and L parameters are copied to VCC structure.
New ER for congestion.
ACR field for transmitted forward RM cell.
New rate index for ACR lose-it behavior triggered. The new rate decision block is located at byte
address SCH_ERB*128 + 32*ACR_INDEX.
ACR Lose-it behavior trigger time.
New rate indexes. The correct new rate index is selected with a 3-bit rate decision vector. The rate
decision block is located at byte address SCH_ERB*128 + 32*NEW_RATEn.
NEW_RATE1
NEW_RATE3
NEW_RATE5
NEW_RATE7
ACR_INDEX
CONG_ER
Mindspeed Technologies
L_MAN
Rsvd
Description
6.5 Traffic Management Control and Status Structures
™
I_EXP
NEW_RATE0
NEW_RATE2
NEW_RATE4
NEW_RATE6
ACR_TO
ACR
6.0 Traffic Management
I_MAN
6-49
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