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參數(shù)資料
| 型號(hào)： | MT8930CP |
| 廠商： | ZARLINK SEMICONDUCTOR INC |
| 元件分類(lèi)： | 數(shù)字傳輸電路 |
| 英文描述： | Subscriber Network Interface Circuit |
| 中文描述： | DATACOM, DIGITAL SLIC, PQCC44 |
| 封裝： | PLASTIC, MS-018AC, LCC-44 |
| 文件頁(yè)數(shù)： | 11/41頁(yè) |
| 文件大小： | 2516K |
| 代理商： | MT8930CP |
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Data Sheet
MT8930C
11
Figure 8 - Point-to-Point Configuration
Fiure 9 - Short Passive Bus Configuration, up to 8 TEs can be supported
Figure 10 - Extended Passive Bus Configuration, up to 8 TEs can be supported
NT
TE
T
R
T
R
0 - 1 Km
NT is operating in adaptive timing
TR is the line termination resistor = 100
NT
TE
T
R
T
R
TE
TE
TE
TE
TE
TE
TE
100 m for 75
impedance cable and 200 m for 150
impedance cable
100 - 200 m
NT is operating in fixed timing
TR is the line termination resistor = 100
0 - 10 m
NT is operating in adaptive timing
TR is the line termination resistor = 100
TE
TE
TE
TE
TE
TE
TE
0 - 10 m
0-500 m
0-50 m
NT
T
R
T
R
TE
all TEs . All NT devices connected into the star will
receive the information transmitted by all TEs on all
branches of the star, exactly as if they were on the
same physical S-Bus. All NTs in the star
configuration must be operating in fixed timing mode.
Refer to the description of the star configuration in
the ST-BUS section.
The SNIC has one last mode of operation called the
NT slave mode. This has the effect of operating the
SNIC in network termination mode (CK/NT pin = 1)
but having the frame structure and registers
description defined by the TE mode. This can be
used where multiple subscriber loops must carry a
fixed phase relation between each line. A typical
situation is when the system is trying to synchronize
two nodes of a synchronous network. This allows
multiple TEs to share a common ST-BUS timebase.
The synchronization of the loops is established by
using the clock signals produced by a local TE as an
input timing source to the NT slave.
Adaptive Timing Operation
On power-up or after a reset, the SNIC in NT mode is
set to operate in fixed timing. To switch to adaptive
timing, the user should:
1) set the DR bit to 1
2) set the Timing bit to 1 in the C-channel
Control Register
3) wait for 100 ms period
4) proceed in using the AR and DR bits as
desired
Switching from adaptive timing mode is completed
by resetting the Timing bit.
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| MT8931CP | Subscriber Network Interface Circuit |
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| MT8931CE | CMOS ST-BUS⑩ FAMILY Subscriber Network Interface Circuit Preliminary Information |
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| MT8930CPR | 制造商:Microsemi Corporation 功能描述: |
| MT8931B | 制造商:MITEL 制造商全稱(chēng):Mitel Networks Corporation 功能描述:Subscriber Network Interface Circuit |
| MT8931BC | 制造商:MITEL 制造商全稱(chēng):Mitel Networks Corporation 功能描述:Subscriber Network Interface Circuit |
| MT8931BE | 制造商:MITEL 制造商全稱(chēng):Mitel Networks Corporation 功能描述:Subscriber Network Interface Circuit |
| MT8931BP | 制造商:MITEL 制造商全稱(chēng):Mitel Networks Corporation 功能描述:Subscriber Network Interface Circuit |
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