DS33R41 Maxim Integrated Products, DS33R41 Datasheet - Page 154

• Manufacturer Part Number: DS33R41
• Description: Network Controller & Processor ICs Inverse-Multiplexing Ethernet Mapper wit
• Manufacturer: Maxim Integrated Products

Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bits 7 to 0: Receive Maximum Packet Size (RMX[15:8]) These 16 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:
Register Description:
Register Address:
Bit #
Name
Default
Bit 2: Receive FCS Errored Packet Count (REPC). This read-only bit indicates that the receive FCS errored
packet count is non-zero.
Bit 1: Receive Aborted Packet Count (RAPC). This read-only bit indicates that the receive aborted packet count
is non-zero.
Bit 0: Receive Size Violation Packet Count (RSPC). This read-only bit indicates that the receive size violation
packet count is non-zero.
RMX15
—-
7
0
7
0
RMX14
—
6
0
6
0
LI.RMPSCH
Receive Maximum Packet Size Control High Register
103h
LI.RPPSR
Receive Packet Processor Status Register
104h
RMX13
5
0
5
0
RMX12
154 of 335
—
0
0
4
4
RMX11
3
0
3
0
RMX10
REPC
2
1
2
0
RMX9
RAPC
1
1
1
0
RMX8
RSPC
0
1
0
0