參數(shù)資料
型號: TMUX03155
英文描述: TMUX03155 STS-3/STM-1 (AU-4) Multiplexer/Demultiplexer
中文描述: TMUX03155 STS-3/STM-1(非盟- 4)復(fù)用器/解復(fù)用器
文件頁數(shù): 16/120頁
文件大?。?/td> 1542K
代理商: TMUX03155
16
Agere Systems Inc.
Data Sheet
April 2001
TMUX03155 STS-3/STM-1 (AU-4) Multiplexer/Demultiplexer
Mode Control Signals
(See Register Description on page 54.)
The device is controlled by four control signals:
T/RSONET_SDH
and
T/RSTS3_AU4, 0x34
. These signals control
the following:
I
The type of input signal to expect (low-speed (LS) side—STS-1/AU-3).
I
The expected high-speed (HS) input/output signal format—STS-3/STM-1 (AU-4), or STS-1.
I
The default byte value in the outgoing HS frame.
These provisioning signals are summarized in Table 3 and Table 4.
STS-1 Mode
In STS-1 mode, all other device functions remain the same as in STS-3/STM-1 mode; except, the device runs at
one-third the STS-3/STM-1 rate and operates on a single STS-1 frame. The high-speed side operates in the follow-
ing three modes: 1) as a 51.84 Mbits/s serial interface, 2) as a parallel 12.96 MHz nibble wide, 3) or as a 6.48 MHz
byte-wide interface. The low-speed STS-1/AU-3 side operates at 6.48 Mbytes/s and communicates with a single
STS-1/AU-3 device (TMPR28051). Since the TOAC interface provides access to the transport overhead in a single
STS-1 frame, its clock and data operate at 1.782 MHz, while the sync runs at 8 kHz. For STS-1 mode, set both
mode pins 153 and 154 to a logic 0, and set all mode control bits
TSTS3_AU4, TSONET_SDH, RSTS3_AU4,
RSONET_SDH, 0x34
, to a logic 0.
Table 3. Transmit Mode Control Signals
TSTS3_AU4
TSONET_SDH
Description
0 = STS-3
0 = SONET
1
1. SONET = OOF 0
1, 4 times detect; default output byte = 0x00.
2. SDH = OOF 0
1, 5 times detect; default output byte = 0xFF.
Three STS-1 inputs multiplexed to an STS-3 output. Also used for
STS-1 mode. See STS-1 Mode section for details.
Three AU-3 signals multiplexed to an STM-1 (AU-4) signal.
1 = AU-4
0 = SONET
*
1 = SDH
2
1 = SDH
0 = STS-3
1 = AU-4
Three STS-1 inputs multiplexed to an STS-3 output.
Three AU-3 signals multiplexed to an STM-1 (AU-4) signal.
Table 4. Receive Mode Control
RSTS3_AU4
RSONET_SDH
Description
0 = STS-3
0 = SONET
1
1. SONET = OOF 0
1, 4 times detect; default output byte = 0x00; ignore SS bits.
2. SDH = OOF 0
1, 5 times detect; default output byte = 0xFF; verify SS bits = 10.
One STS-3 input demultiplexed to three STS-1 outputs. Also used
for STS-1 mode. See STS-1 Mode section for details.
One STM-1 (AU-4) input demultiplexed to three AU-3 outputs.
1 = AU-4
0 = SONET
*
1 = SDH
2
1 = SDH
0 = STS-3
1 = AU-4
One STS-3 input demultiplexed to three STS-1 outputs.
One STM-1 (AU-4) input demultiplexed to three AU-3 outputs.
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