DS33X42+ Maxim Integrated Products, DS33X42+ Datasheet - Page 55

• Manufacturer Part Number: DS33X42+
• Description: IC MAPPING ETHERNET 256CSBGA
• Manufacturer: Maxim Integrated Products

Specifications of DS33X42+

• 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

________________________________________________ DS33X162/X161/X82/X81/X42/X41/X11/W41/W11
8.12.2 VCAT/LCAS Configuration and Operation
VCAT/LCAS setup requires an external Micro to issue an instruction to setup and tear down the IMUX function.
The microprocessor can turn off links that are not participating. Once any changes to the transmit VCAT
configuration are made, a zero-to-one transition on VCAT.TCR1.TLOAD is required in order to load the updated
configuration.
8.12.2.1Receive VCAT Initialization
1. Configure the VCG Frame Mode via VCAT.RCR1.T3T1
2. Configure VCAT.RCR3 with the number of members per VCG.
3. Assign each port to the appropriate VCG via VCAT.RCR4.RVGS[2:0] and VCAT.RCR4.RPA.
4. Enable the Receive VCAT Blocks via VCAT.RCR1.RVBLKEN and VCAT.RCR1.RVENn.
5. Clear the FIFO Reset in VCAT.RCR4.
6. If needed, enable LCAS via VCAT.RCR2.LE[4:1].
8.12.2.2Transmit VC Group Initialization – LCAS Enabled
1. Assign each port to the appropriate VCG via VCAT.TCR3.TVGS[2:0] and VCAT.TCR3.TPA.
2. Assign the Sequence number to each port via VCAT.TCR3.SQ[3:0].
3. Configure VCAT.TCR2 with the number of members per VCG.
4. Configure the VCG Frame Mode via VCAT.TCR1.VnFM[1:0].
5. Write the LCAS Control word via VCAT.TLCR8.CTRL[3:0] to IDLE for participating links.
6. Enable LCAS through VCAT.RCR2.LE[4:1].
7. Enable the Transmit VCAT Block via VCAT.TCR1.TVBLKEN.
8. Initiate a zero-to-one transition on VCAT.TCR1.TLOAD in order to load the configuration.
8.12.2.3Transmit VC Group Initialization (LCAS Disabled)
1. Assign each port to the appropriate VCG via VCAT.TCR3.TVGS[2:0] and VCAT.TCR3.TPA.
2. Assign the Sequence number to each port via VCAT.TCR3.SQ[3:0].
3. Configure each VCG Frame Mode via VCAT.TCR1.VnFM[1:0].
4. Configure VCAT.TCR2 with the number of members per VCG.
5. Enable the Transmit VCAT Block via VCAT.TCR1.TVBLKEN.
6. Initiate a zero-to-one transition on VCAT.TCR1.TLOAD in order to load the configuration.
Rev: 063008
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