參數(shù)資料
型號(hào)： PXB 4330 E
廠商： SIEMENS AG
英文描述： ATM Buffer Manager(異步傳輸模式緩沖器管理器)
中文描述： 緩沖區(qū)管理器自動(dòng)柜員機(jī)（異步傳輸模式緩沖器管理器）
文件頁(yè)數(shù)： 49/61頁(yè)
文件大?。?/td> 551K
代理商： PXB 4330 E
PXB 4330 E
Semiconductor Group
49
Application Note 11.98
1.8.2.1
Table 12
shows possible threshold values for example 2:
Numeric Threshold Configuration to Example 2
Table 12
Traffic
Class
Threshold Configuration to Example 2
Thresholds
SbMax
EpdCi
256
e.g. 50% of
total buffer
= 32768
e.g. 50% of
total buffer
= 32768
Unit
BufNrt
Max
256
1)
1)
Subscript value corresponds to the respective threshold granularity
BufNrt
EPD
256
TrafClass
Max
256
QMax
EPD
64
QCI
CLP1
4
UEC/
DEC
256
CBR.1
n.a.
2)
2)
n.a. = not applicable i.e. it is not meaningful to use this threshold for this traffic class. Every unused threshold
has to be set to the maximum value FFFF
H
(besides the queue thresholds: QMaxEPD maximum value is
3FFF
H
and QCICLP1 maximum value is 3FF
H
; always eight ’1’ in the respective register) !
It is recommended to use the maximum MBS value of all queues of this traffic class for this ABM core.
n.a.
256
256
n.a.
n.a.
cells
VBR.1
(rt)
n.a.
n.a.
256
256
n.a.
n.a.
cells
VBR.2
(nrt) +
VBR.3
(nrt)
ABR
FFFF
H
- rt
= 64k-512
= 65024
n.a.
at
minimum
#4-#3 =
32356
e.g. 50% of
total buffer
= 32768
max. MBS
3)
+
δ
3)
δ
=
about
4..20
cells
4)
4)
It has to be a small value due to the fact that CLP 1 cells are transmitted only if the queue buffer is almost
empty (as CLP 1 cells are not calculated by the CAC).
n.a.
cells
threshold
#3 =e.g.
50% of
total buffer
= 32768
n.a.
n.a.
e.g. 50% of
total buffer
= 32768
round trip
delay
5)
5)
At minimum a queue size which is sufficient to avoid cell discarding before the source has had enough time to
react on EFCI/CI/NI marking (actually necessary queue size has to be determined by traffic measurements).
tbd
n.a.
cells
GFR
e.g. 30%
of total
buffer =
19456
e.g. 50% of
total buffer
= 32768
>>
MBS
≥
MFS
e.g. 20%
of total
buffer =
13056
cells
UBR
=UEC/
DEC of
GFR =
13056
e.g. 50% of
total buffer
= 32768
≤
e.g. 75%
of
BufNrtEPD
of UBR =
9792
n.a.
n.a.
cells
相關(guān)PDF資料
PDF描述
PXB4219E Interworking Element for 8 E1/T1 Lines
PXB4220E Interworking Element for 8 E1/T1 Lines
PXB4221E Interworking Element for 8 E1/T1 Lines
PXB4219 IWE8 Interworking Element for 8 E1/T1 Lines
PXB4221 IWE8 Interworking Element for 8 E1/T1 Lines
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PXB4330EV1.1 制造商:Infineon Technologies AG 功能描述:SP000007503_ABM 制造商:Rochester Electronics LLC 功能描述:- Bulk
PXB4330EV1.1-G 制造商:Infineon Technologies AG 功能描述:
PXB4330EV2.1 制造商:Rochester Electronics LLC 功能描述:- Bulk
PXB4340E 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Communications
PXB4340EV1.1-G 制造商:Infineon Technologies AG 功能描述:
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*