- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄359233 > MT8931C (Zarlink Semiconductor Inc.) Subscriber Network Interface Circuit PDF資料下載
參數(shù)資料
| 型號： | MT8931C |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | Subscriber Network Interface Circuit |
| 中文描述： | 用戶網(wǎng)絡(luò)接口電路 |
| 文件頁數(shù)： | 8/39頁 |
| 文件大?。?/td> | 833K |
| 代理商： | MT8931C |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當(dāng)前第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁
MT8931C
Data Sheet
8
The C-channel bit mapping from the parallel port to
the ST-BUS is organized such that the most
significant bit is transmitted or received first.
State Activation
The
deactivates the SNIC in response to line activity or
external command. The controller is completely
hardware driven and need not be initialized by the
microprocessor. The state diagram for initialization
is shown in Figure 7.
state
activation
controller
activates
or
The protocol used by the state activation controller is
defined as follows:
1) In the deactivated state, neither the NT nor TE
assert a signal on the line (Info0).
2) If the TE wants to initiate activation, it must begin
transmitting a continuous signal consisting of a
positive zero, a negative zero followed by six
ones (Info1).
3) Once the NT has detected Info1, it begins to
transmit Info2 which consists of an S-Bus frame
Figure 7 - Link Activation Protocol, State Diagram
Signals from NT to TE
Signals from TE to NT
Info0
Info2
Info4
No Signal
Valid frame structure with
all B, D, D-echo and A bits
set to ‘0’
Valid frame with data in B,
D, D-echo channels. Bit A is
set to 1.
Info1
Continuous Signal of +‘0’, -‘0’
and six ‘1’s
Info3
Valid frame with data in B & D
Bits
Where: BA
(2)
= Bus Activity
DR = Deactivation Request
AR = Activation Request
Sync
(2)
= Frame Sync Signal
A = Activation bit
Time out = 32 ms Timer Signal
Note 1: signal is not timebase locked to NT.
Note 2: Sync/BA bit of the Status Register
is configured as Sync bit when
AR = 1 and DR = 0, or as BA bit
when AR = 0 or DR = 1. A change in
the state of the AR and/or DR bits
will cause a change in the function
of the Sync/BA bit in the following
ST-BUS frame.
TE State Activation Diagram
NT State Activation Diagram
DR = 1
AR = 1
Sync = 1
BA = 0
Sync = 1
DR = 1
DR = 1
BA = 0
A = 1 &
Sync = 1
Sync = 0
A = 0
Activation Request
send Info1 if BA = 0
send Info0 if BA = 1
Deactivated
send Info0
Synchronized
send Info3 if Sync = 1
send Info0 if Sync = 0
Activated
send Info3
BA = 1
AR = 1
BA =0
Time out
DR = 1
AR = 1
Sync = 1
Sync = 0
DR = 1
Deactivated
send Info0
Pending
Activation
send Info2
Pending
Deactivation
Send Info0
Activated
send Info4
Info0
No Signal
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT8931CE | Subscriber Network Interface Circuit |
| MT8931CP | Subscriber Network Interface Circuit |
| MT8931C-1 | CMOS ST-BUS⑩ FAMILY Subscriber Network Interface Circuit |
| MT8931CE | CMOS ST-BUS⑩ FAMILY Subscriber Network Interface Circuit Preliminary Information |
| MT8931C | CMOS ST-BUS⑩ FAMILY Subscriber Network Interface Circuit Preliminary Information |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8931C-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS⑩ FAMILY Subscriber Network Interface Circuit |
| MT8931CC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS⑩ FAMILY Subscriber Network Interface Circuit Preliminary Information |
| MT8931CE | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Subscriber Network Interface Circuit |
| MT8931CP | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:Subscriber Network Interface Circuit |
| MT8940 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY T1/CEPT Digital Trunk PLL |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。