DS33X81+ Maxim Integrated Products, DS33X81+ Datasheet - Page 221

• Manufacturer Part Number: DS33X81+
• Description: IC MAPPING ETHERNET 256CSBGA
• Manufacturer: Maxim Integrated Products

Specifications of DS33X81+

• 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

Register Name:
Register Description:
Register Address:
193h:
Default
192h:
Default
Bit 9: Fractional Packet Error Purge Disable (FPEPD)
Bit 8: WAN Queue Overflow Discard Enable (WQODE) Setting used for all 16 WAN Queues.
This setting is used for all 16 WAN Queues. When WQODE = 0 and an overflow condition occurs on a WAN
queue, that entire queue is discarded. This bit setting is independent of the Preemptive Discard (WQPD).
Bits 6-7: WAN Insert Round Robin Weight (WIRRW[2:1])
Only valid in Forwarding Mode 2, when LQSM = 1 (Weighted Round Robin Scheduling).
Bits 4-5: WAN Insert Encapsulator (WIENC[2:1])
Bit 3: WAN Insert Strict Priority Level (WISPL])
For LQSM = 0 (Strict Priority Scheduling; the LQSM bit is defined in the LQSC register below)
Note: Only valid when using Strict Priority Scheduling (LQSM = 0).
Bit 2: WAN Insert Enable (WIENA).
Bit 1: WAN Queue Preemptive Discard (WQPD).
Bit 0: All SDRAM Queue Pointer Reset. (ASQPR)
Rev: 063008
________________________________________________ DS33X162/X161/X82/X81/X42/X41/X11/W41/W11
0 = Fractional Frame Error Purge Enabled.
1 = Fractional Frame Error Purge Disabled.
0 = Overflow Discard Enabled.
1 = Overflow Discard Disabled.
00: Round Robin Weight = 1.
01: Round Robin Weight = 2.
10: Round Robin Weight = 4.
11: Round Robin Weight = 8.
00 = multiplexed with data from Encapsulator #1 (WAN Group1).
01 = multiplexed with data from Encapsulator #2 (WAN Group 2).
10 = multiplexed with data from Encapsulator #3 (WAN Group 3).
11 = multiplexed with data from Encapsulator #4 (WAN Group 4).
0: WAN Insert using priority level 1.5; Inserted frames scheduled ahead of levels 2, 3, 4.
1: WAN Insert using priority level 3.5; Inserted frames scheduled ahead of level 4.
0 = WAN Insertion is disabled.
1 = WAN Insertion is enabled.
0 = Disabled.
1 = Enabled. Frames are discarded when the WAN queue high threshold is exceeded.
0 = Normal operation.
1 = Momentary Reset of all WAN, LAN, Insert and Extract Queue Pointers.
WIRRW2
Bit 15
Bit 7
0
0
-
WIRRW1
Bit 14
Bit 6
0
0
-
AR.MQC
Miscellaneous Queue Control
192h
WIENC2
Bit 13
Bit 5
0
0
-
WIENC1
Bit 12
Bit 4
0
0
-
Bit 11
WISPL
Bit 3
0
0
-
WIENA
Bit 10
Bit 2
0
0
-
FPEPD
WQPD
Bit 9
Bit 1
0
0
WQODE
221 of 375
ASQPR
Bit 8
Bit 0
0
0