參數(shù)資料
型號： ZL50053QCC
廠商： ZARLINK SEMICONDUCTOR INC
元件分類： 路由/交換
英文描述： 8 K Channel Digital Switch with High Jitter Tolerance, Single Rate (8 or 16 Mbps), and 64 Inputs and 64 Outputs
中文描述： TELECOM, DIGITAL TIME SWITCH, PQFP256
封裝： 28 X 28 MM, 1.40 MM HEIGHT, 0.40 MM PITCH, MS-026BJC, LQFP-256
文件頁數(shù)： 26/67頁
文件大小： 562K
代理商： ZL50053QCC
ZL50051/3
Data Sheet
26
Zarlink Semiconductor Inc.
5.0 Data Delay Through the Switching Paths
Serial data which goes into the device is converted into parallel format and written to consecutive locations in the
data memory. Each data memory location corresponds to the input stream and channel number. Channels written
to any of the buffers during Frame N will be read out during Frame N+2. The input bit delay and output bit
advancement have no impact on the overall data throughput delay.
In the following paragraphs, the data throughput delay (
T
) is represented as a function of ST-BUS frames, input
channel number, (
m
), and output channel number (
n
). Table 2 describes the variable range for input streams and
Table 3 describes the variable range for output streams. The data throughput delay under various input channel
and output channel conditions can be summarized as:
T = 2 frames + (n - m)
The data throughput delay (
T
) is:
T = 2 frames + (n - m)
. Assuming that
m
(input channel) and
n
(output channel)
are equal, we have the figure below, in which the delay between the input data being written and the output data
being read is exactly 2 frames.
1
1
1
1
1
1
1
1
0
1
1
1
X
0
0
1
1
0
1
X
HI-Z
HIGH
HI-Z
ACTIVE
(HIGH or LOW)
Input Stream
Data Rate
Input Channel
Number (m)
8 Mbps
0 to 127
16 Mbps
0 to 255
Table 2 - Variable Range for Input Streams
Output Stream
Data Rate
Output Channel
Number (n)
8 Mbps
0 to 127
16 Mbps
0 to 255
Table 3 - Variable Range for Output Streams
RESET
(input pin)
ODE
(input pin)
OSB
(Control
Register bit)
LE/BE
(Local /
Backplane
Connection
Memory bit)
LORS/BORS
(input pin)
LSTo0-31/
BSTo0-31
Table 1 - Local and Backplane Output Enable Control Priority (continued)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ZL50057 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:12 K-Channel Digital Switch with High Jitter Tolerance, Per Stream Rate Conversion (2, 4, 8, 16, or 32 Mbps), and 48 Inputs and 48 Outputs
ZL50057GAC 制造商:Microsemi Corporation 功能描述: 制造商:Microsemi Corporation 功能描述:12K DX HI JIT TOL RATE CONV & 48 I/O 27M - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC DIGITAL SWITCH 12K CH 272PBGA 制造商:Microsemi Corporation 功能描述:IC DIGITAL SWITCH 12K CH 272PBGA
ZL50057GAG2 制造商:Microsemi Corporation 功能描述:ZL50057GAG2 - Trays 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC DIGITAL SWITCH 12K CH 272PBGA 制造商:Microsemi Corporation 功能描述:IC DIGITAL SWITCH 12K CH 272PBGA
ZL50058 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:12 K-Channel Digital Switch with High Jitter Tolerance, Per Stream Rate Conversion (2, 4, 8, 16, or 32 Mbps), and 48 Inputs and 48 Outputs
ZL50058GAC 制造商:Microsemi Corporation 功能描述:12K DX HI JIT TOI RATE CONC - Trays 制造商:Microsemi Corporation 功能描述:IC DIGITAL SWITCH 12K CH 256PBGA
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