Maxim DS33R11 specifications Li.Rmpscl, Li.Rmpsch, Li.Rppsr

DS33R11 Ethernet Mapper with Integrated T1/E1/J1 Transceiver

Register Name:			LI.RMPSCL
Register Description:			Receive Maximum Packet Size Control Low Register
Register Address:			102h
Bit #	7	6	5		4	3	2	1	0
Name	RMX7	RMX6		RMX5	RMX4	RMX3	RMX2	RMX1	RMX0
Default	1	1		1	0	0	0	0	0

Bits 0 - 7: Receive Maximum Packet Size (RMX[7:0]) Eight bits of a sixteen bit value. Register description below.

Register Name:			LI.RMPSCH
Register Description:			Receive Maximum Packet Size Control High Register
Register Address:			103h
Bit #	7	6	5		4	3	2	1	0
Name	RMX15	RMX14		RMX13	RMX12	RMX11	RMX10	RMX9	RMX8
Default	0	0		0	0	0	1	1	1

Bits 0-7: Receive Maximum Packet Size (RMX[8:15]) These sixteen bits indicate the maximum allowable packet

size in bytes. The size includes the FCS bytes, but excludes bit/byte stuffing. Note: If the maximum packet size is less than the minimum packet size, all packets are discarded. When packet processing is disabled, these sixteen bits indicate the "packet" size the incoming data is to be broken into.

The maximum packet size allowable is 2016 bytes plus the FCS bytes. Any values programmed that are greater than 2016 + FCS will have the same effect as 2016+ FCS value.

In X.86 mode, the X.86 encapsulation bytes are included in maximum size control.

Register Name:			LI.RPPSR
Register Description:			Receive Packet Processor Status Register
Register Address:			104h
Bit #	7	6	5		4	3	2	1	0
Name	-	-		-	-	-	REPC	RAPC	RSPC
Default	0	0		0	0	0	0	0	0

Bit 2: Receive FCS Errored Packet Count (REPC) This read only bit indicates that the receive FCS errored packet count is nonzero.

Bit 1: Receive Aborted Packet Count (RAPC) This read only bit indicates that the receive aborted packet count is nonzero.

Bit 0: Receive Size Violation Packet Count (RSPC) This read only bit indicates that the receive size violation packet count is nonzero.

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