- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383644 > MT90220 (Mitel Networks Corporation) Octal IMA/UNI PHY Device(八端口 IMA/UNI 物理層設(shè)備（八端口ATM IMA和UNI處理器）) PDF資料下載
參數(shù)資料
| 型號： | MT90220 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Octal IMA/UNI PHY Device(八端口 IMA/UNI 物理層設(shè)備（八端口ATM IMA和UNI處理器）) |
| 中文描述： | 八路IMA的/單向物理層設(shè)備（八端口IMA的/單向物理層設(shè)備（八端口自動柜員機IMA的和單向處理器）） |
| 文件頁數(shù)： | 34/118頁 |
| 文件大?。?/td> | 310K |
| 代理商： | MT90220 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第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頁當前第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁
MT90220
26
BUS Clock signal (i.e., 4.096 MHz). The TXSYNC
signal is generated by the MT90220 and meets the
ST-BUS format. It is not synchronized with any other
RXSYNC or TXSYNC signal.
4.2.1.1
Detailed ST-BUS Spaced Mapping
(3 of Every 4 Channels)
DS1 (T1) links contain 24 bytes of serial voice/data
channels distributed over the 32 ST-BUS channels.
One mapping option uses 3 of every 4 channels. The
channels 0, 4, 8, 12, 16, 20, 24 and 28 of the ST-
BUS are not used. The MT90220 tri-states the DSTo
lines during the unused time-slots. See Figure 9.
4.2.1.2
Detailed ST-BUS Grouped Mapping
(24 Consecutive Channels)
In this option, the 24 bytes of serial voice/data
channels of the DS-1 use the first 24 consecutive
channels over the 32 ST-BUS channels. The
MT90220 tri-states the DSTo lines for the unused
channels (25 - 31). Refer to Table 9.
4.2.1.3
Detailed ST-BUS ISDN Mapping
(T1 ISDN Modes)
When the T1 ISDN modes are selected, channel 24
is not used to carry bytes from ATM cells. This byte is
not used in the receive direction. In the transmit
direction it is set to a high impedance state. The ST-
BUS mapping is identical as in the T1 (DS1) ’clear
channel’ set-up except for the last channel of the T1
(DS1) frame. This last channel is reserved for
signaling.
4.2.2
The MITEL ST-BUS has 32 channels, numbered 0 to
31. The PCM-30 payload is mapped to 30 of the 32
ST-BUS timeslots. Channels 0 and 16 are used for
framing and signaling information. See Figure 11
and Table 10.
Mode 4 and 8: ST-BUS lnterface for E1
In E1 PCM Modes 4 and 8, the MITEL ST-BUS clock
value is 4.096 MHz. The frame pulse is 8 kHz and
should be as defined in Figure 11.
In PCM Mode 4, the TXCK and TXSYNC pins are
defined as inputs and are generated by external
circuitry. In the PCM Mode 8, the TXCK and
TXSYNC pins are defined as outputs. The source for
the TXCK is selected using
TX PCM Link Control
register number 2 and can be any of the eight RXCK
or four external REFCK clocks. As there is no PLL
inside the MT90220, the source frequency has to be
a valid ST-BUS Clock signal (i.e., 4.096 MHz). The
TXSYNC signal is generated by the MT90220 and
meets the ST-BUS format. It is not synchronized with
any other RXSYNC or TXSYNC signal.
4.2.3
In PCM Modes 1 and 5, the TXCK clock frequency
can be either 1.544 or 2.048 MHz. In the PCM Mode
Mode 1 and 5: Generic PCM Interface for T1
Table 9 - T1 Channel Mapping Using 24 Consecutive Channels
Figure 10 - PCM Mode 2 and 6: ST-BUS Interface for T1 (Grouped Mapping)
DS1 Time slots
1
2
3
4
5
6
7
8
9
1
0
9
1
1
1
0
1
2
1
1
1
3
1
2
1
4
1
3
1
5
1
4
1
6
1
5
Voice/Data Channels
(DSTi/o)
ST-BUS
DS1 Time slots
0
1
2
3
4
5
6
7
8
1
7
1
6
1
8
1
7
1
9
1
8
2
0
1
9
2
1
2
0
2
2
2
1
2
3
2
2
2
4
2
3
-
-
-
-
-
-
-
-
Voice/Data Channels
(DSTi/o)
ST-BUS
2
4
x
2
5
x
2
6
x
2
7
x
2
8
x
2
9
x
3
0
x
3
1
x
Serial Bit
Stream
Bit Cell
Bit Cell
Bit Cell
Unused or
High Impedance
High Impedance
...
...
TXSYNC
RXSYNC
RXCK
...
...
...
...
Unused or
TXCK
...
...
Bit Cells
at DSTx0-7
Channel 31 bit 0
Channel 0 bit 7
Channel 0 bit 6
Channel 23 bit 0
Channel 24 bit 7
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT90221 | Quad IMA/UNI PHY Device(四端口 IMA/UNI 物理層設(shè)備（四端口ATM IMA和UNI處理器）) |
| MT90401 | SONET/SDH System Synchronizer(SONET/SDH 系統(tǒng)同步裝置（由一個數(shù)字鎖相環(huán)組成）) |
| MT9040 | T1/E1 Synchronizer(T1/E1 系統(tǒng)同步裝置（由一個數(shù)字鎖相環(huán)組成）) |
| MT9041A | () |
| MT9041B | T1/E1 System Synchronizer(T1/E1系統(tǒng)同步裝置（由一個數(shù)字鎖相環(huán)組成）) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT90220AL | 制造商:Zarlink Semiconductor Inc 功能描述:I.C. |
| MT90220ALX01 | 制造商:Mitel Networks Corporation 功能描述: |
| MT90221 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Quad IMA/UNI PHY Device |
| MT90221AL | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Quad IMA/UNI PHY Device |
| MT90222 | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:4/8/16 Port IMA/TC PHY Device |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。