- 您現在的位置：買賣IC網 > PDF目錄359677 > MT9088IG (Zarlink Semiconductor Inc.) TDM to Packet Processors PDF資料下載
參數資料
| 型號： | MT9088IG |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | TDM to Packet Processors |
| 中文描述： | TDM到分組處理器 |
| 文件頁數： | 35/97頁 |
| 文件大小： | 702K |
| 代理商： | MT9088IG |
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頁第34頁當前第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
MT90880/1/2/3
Data Sheet
35
Zarlink Semiconductor Inc.
Figure 17 - Channel and stream order for packet formation
Each packet contains one or more complete TDM frames of data, in sequential order. This groups all the channels
for the first frame, followed by the same set of channels for the subsequent frame, and so on. Partial TDM frames
are not permitted, and each packet starts at the beginning of a new frame. Figure 18 shows the structure of a
packet containing
x
64 Kbs channels, and
n
TDM frames.
5.4.2 Packet Structure
The fixed header at the start of each packet is added by the Packet Transmit block. This consists of up to 64
bytes, containing the Ethernet header, any upper layer protocol headers, and the two byte context descriptor
field (see section below). The header is entirely user programmable, enabling the use of any protocol provided
there are no dynamic fields (i.e. fields that change from packet to packet).
The Packet Transmit block also maintains a "shadow" header for each context. This is used for context
modification, for example addition of deletion of channels. Any header changes required by a context
modification are programmed into the shadow header in advance. When the changes are complete, the
"shadow" header is swapped with the existing header for the first packet containing the new context payload.
Packet Size
The payload and header size must be chosen such that the overall packet size is not less than the Ethernet
standard minimum packet size of 64 bytes. Where this is likely to be the case, the header must be padded (as
shown in Figure 18) to ensure that the packet is large enough. The padding is required in front of the TDM
payload, to ensure that the WAN Transmit block reads packets correctly on reception. This block is given a
pointer to the start of the TDM payload, and then continues to read data until the end of the packet, as indicated
by the packet length.
In applications where large payloads are being used, the payload size must be chosen such that the overall
packet size does not exceed the maximum Ethernet packet size of 1518 bytes (1522 bytes with VLAN tags).
Channel 0
Channel 1
Channel 2
Channel 31
Stream 0
Channel 0
Channel 1
Channel 2
Channel 31
Stream 31
Channel 0
Channel 1
Channel 2
Channel 31
Stream 1
Channel 0
Channel 1
Channel 2
Channel 31
Stream 2
相關PDF資料 |
PDF描述 |
|---|---|
| MT8960 | Integrated PCM Filter Codec |
| MT8963AE1 | Integrated PCM Filter Codec |
| MAQ2901CL | Circular Connector; No. of Contacts:85; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:40; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle RoHS Compliant: No |
| MAQ2901CS | Circular Connector; No. of Contacts:1; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:10S; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:10S-2 RoHS Compliant: No |
| MAQ2901FB | ER 3C 3#16 PIN RECP WALL RoHS Compliant: No |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MT9092 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS ST-BUS⑩ FAMILY Digital Telephone with HDLC (HPhone-II) |
| MT9092AP | 制造商:Microsemi Corporation 功能描述: |
| MT9092AP1 | 制造商:Zarlink Semiconductor Inc 功能描述:DGTL TEL 44PLCC - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:PB FREE H-PHONE-PLUS PLCC |
| MT9092APR | 制造商:Microsemi Corporation 功能描述:DGTL TEL 44PLCC - Tape and Reel |
| MT9092APR1 | 制造商:Microsemi Corporation 功能描述:DGTL TEL 44PLCC - Tape and Reel 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC DGTL TELEPHONE CIRCUIT 44PLCC 制造商:Microsemi Corporation 功能描述:IC DGTL TELEPHONE CIRCUIT 44PLCC |
發(fā)布緊急采購，3分鐘左右您將得到回復。