DS33X41+ Maxim Integrated Products, DS33X41+ Datasheet - Page 53
DS33X41+
Manufacturer Part Number
DS33X41+
Description
IC MAPPING ETHERNET 256CSBGA
Manufacturer
Maxim Integrated Products
Datasheet
1.DS33X11.pdf
(375 pages)
Specifications of DS33X41+
Applications
Data Transport
Interface
Parallel/Serial
Voltage - Supply
1.8V, 2.5V, 3.3V
Package / Case
256-CSBGA
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8.12 Link Aggregation and Link Capacity Adjustment (VCAT/LCAS)
Virtual Concatenation (VCAT) allows information to be transmitted over up to 16 aggregated WAN links. The VCAT
function aligns all members of the VCG to the link with the most transmission delay. The information on all
members of the VCG must be buffered until the last data is received from the link with the most transmission delay.
The maximum differential delay allowed between the link with the most delay and the link with the least delay is
200 ms. Note that the queue size is user-programmed and could potentially be configured for values larger than
200 ms of data. In VCAT mode, the maximum recommended queue size is 200 ms worth of data. If the user
configures a queue size larger than 200ms while in VCAT mode, errors may occur due to aliasing. Note that link
aggregation is not possible using the DS33X11 and DS33W11, but the insertion of VCAT overhead is supported on
these devices.
VCAT Features:
Table 8-6. VCAT/LCAS Control Frame for T1/E1
Bit 1
Rev: 063008
________________________________________________ DS33X162/X161/X82/X81/X42/X41/X11/W41/W11
•
•
•
•
•
•
•
C
C
0
0
1
5
4 VCGs for the DS33X162/X82, 2 VCGs for the DS33X42, 1 VCG for the DS33X161/X81/X41/W41
Max differential delay = 200 ms
Receive and Transmit are independent (asymmetrical support)
User programmable configuration of WAN ports used for VCG
Supports Virtual Concatenation of up to 8 T3/E3 or 16 T1/E1
RCLKs of a VCG must be frequency locked.
All TMCLKs/TCLKs used for a VCG must be frequency locked.
Bit 2
RESERVED (0000)
RESERVED (0000)
RESERVED (0000)
RESERVED (0000)
RESERVED (0000)
RESERVED (0000)
MFI2 MSBs (1-4)
C
C
MFI2 LSBs (5-8)
Control Packet
0
0
2
6
SQ Bits 1-4
MST (1-4)
MST (5-8)
CTRL
Bit 3
C
C
0
0
Concatenation Overhead Octet Definition
3
7
Bit 4
RS-ACK
GID
C
C
4
8
Bit 5
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
Bit 6
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
MFI1
Bit 7
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Bit 8
53 of 375
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
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