參數(shù)資料
型號(hào)： ZL50023QCC
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 路由/交換
英文描述： Enhanced 4 K Digital Switch
中文描述： TELECOM, DIGITAL TIME SWITCH, PQFP256
封裝： 28 X 28 MM, 1.40 MM HEIGHT, MS-026BJC, LQFP-256
文件頁數(shù)： 27/80頁
文件大?。?/td> 1341K
代理商： ZL50023QCC
ZL50023
Data Sheet
27
Zarlink Semiconductor Inc.
In variable delay mode, the delay depends on the combination of the source and destination channels of the input
and output streams.
For example, if Stream 4 Channel 2 is switched to Stream 5 Channel 9 with variable delay, the data will be output in
the same 125
μ
s frame. Contrarily, if Stream 6 Channel 1 is switched to Stream 9 Channel 3, the information will
appear in the following frame.
Figure 17 - Data Throughput Delay for Variable Delay
9.2 Constant Delay Mode
In this mode, frame integrity is maintained in all switching configurations. The delay though the switch is 2 frames -
Input Channel + Output Channel. This can result in a minimum of 1 frame + 1 channel delay if the last channel on a
stream is switched to the first channel of a stream. The maximum delay is 3 frames - 1 channel. This occurs when
the first channel of a stream is switched to the last channel of a stream. The constant delay mode is available for all
output channels.
The data throughput delay is expressed as a function of ST-BUS/GCI-Bus frames, input channel number (m) and
output channel number (n). The data throughput delay (T) is:
T = 2 frames + (n - m)
m = input channel number
n = output channel number
n-m <= 0
0 < n-m < 7
n-m = 7
n-m > 7
STio < STi
STio >= STi
T = Delay between input and output
1 frame - (m-n)
1 frame + (n-m)
n-m
Table 5 - Delay for Variable Delay Mode
L-2
L-1
CH0 CH1 CH2 CH3
L-2
L-1
CH0 CH1 CH2 CH3
L-2
L-1
CH0 CH1 CH2 CH3
L-2
L-1
CH0 CH1 CH2 CH3
L-2
L-1
CH0 CH1 CH2 CH3
L-2
L-1
CH0 CH1 CH2 CH3
L-2
L-1
CH0 CH1 CH2 CH3
L-2
L-1
CH0 CH1 CH2 CH3
CH4 CH5 CH6
CH4 CH5 CH6
CH4 CH5 CH6
CH4 CH5 CH6
CH7 CH8 CH9
CH7 CH8 CH9
CH7 CH8 CH9
CH7 CH8 CH9
STi4
CH2
STio5
CH9
STi6
CH1
STio9
CH3
Frame N
Frame N + 1
L = last channel = 31, 63, 127, or 255 for 2.048 Mbps, 4.096 Mbps, 8.192 Mbps, or 16.384 Mbps respectively
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相關(guān)代理商/技術(shù)參數(shù)
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