DS33R11 Maxim Integrated Products, DS33R11 Datasheet - Page 69

• Manufacturer Part Number: DS33R11
• Description: Network Controller & Processor ICs Ethernet Mapper with Integrated T1-E1-J1
• Manufacturer: Maxim Integrated Products

Specifications of DS33R11

• Product: Framer
• Number Of Transceivers: 1
• Supply Voltage (max): 1.89 V, 3.465 V
• Supply Voltage (min): 1.71 V, 3.135 V
• Supply Current (max): 100 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: BGA

Figure 9-13. X.86 Encapsulation of the MAC frame
The DS33R11 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 DS33R11 provides the following functions:
The sequence of processing performed by the receiver is as follows:
•
•
•
•
•
•
•
•
•
•
Control Registers for Address, Control, SAPIH, SAPIL.
32 bit FCS enabled.
Programmable X
Programmable octets X
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
Perform FCS checking.
Detect the closing flag.
MSB
2nd Octect of SAPI(0x01)
1st Octect of SAPI(0xfe)
Destination Adrs(DA)
Source Adrs(SA)
MAC Client Data
43
Address(0x04)
FCS for LAPS
Control(0x03)
FCS for MAC
+1 scrambling.
Length/Type
Flag(0x7E)
Flag(0x7E)
PAD
43
+1 descrambling.
Number of Bytes
LSB
46-1500
69 of 344
2
4
4
1
1
1
1
1
6
6
(LI.TRX86A
to LI.TRX86SAPIL).