參數(shù)資料
型號(hào)： DS33ZH11
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 網(wǎng)絡(luò)接口
英文描述： Ethernet Mapper
中文描述： DATACOM, NETWORK INTERFACE SUPPORT CIRCUIT, PBGA100
封裝： 10 X 10 MM, 1.41 MM HEIGHT, 0.80 MM PITCH, CSBGA-100
文件頁數(shù)： 57/169頁
文件大?。?/td> 1049K
代理商： DS33ZH11
DS33Z11 Ethernet Mapper
Figure 8-12 X.86 Encapsulation of the MAC field
57 of 169
Flag(0x7E)
Address(0x04)
Control(0x03)
1st Octect of SAPI(0xfe)
2nd Octect of SAPI(0x01)
Destination Adrs(DA)
Source Adrs(SA)
Length/Type
Number of Bytes
1
1
1
1
1
6
6
2
MAC Client Data
46-1500
PAD
FCS for MAC
4
FCS for LAPS
Flag(0x7E)
4
MSB
LSB
The DS33Z11 will encode the MAC Frame with the LAPS encapsulation on a complete serial stream if configured
for X.86 mode in the register LI.TX86E. The DS33Z11 provides the following functions:
Control Registers for Address, SAPI, Destination Address, Source Address
32 bit FCS enabled
Programmable X
43
+1 scrambling
The sequence of processing performed by the receiver is as follows:
Programmable octets X
43
+1 descrambling
Detect the Start Flag (7E)
Remove Rate adaptation octets 7d, dd.
Perform transparency-processing 7d, 5e is converted to 7e and 7d, 5d is converted to 7d.
Check for a valid Address, Control and SAPI fields (LI.TRX86A to LI.TRX86SAPIL)
Perform FCS checking
Detect the closing flag.
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