DS33R11 Maxim Integrated Products, DS33R11 Datasheet - Page 57

• Manufacturer Part Number: DS33R11
• Description: Network Controller & Processor ICs Ethernet Mapper with Integrated T1-E1-J1
• Manufacturer: Maxim Integrated Products

Specifications of DS33R11

• Product: Framer
• Number Of Transceivers: 1
• Supply Voltage (max): 1.89 V, 3.465 V
• Supply Voltage (min): 1.71 V, 3.135 V
• Supply Current (max): 100 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: BGA

The MAC circuitry generates a frame status for every frame that is received. This real time status can be read by
SU.RFSB0
frames are received. Hence the real time status reflects the status in time and may not correspond to the current
received frame being processed. This is also true for the transmitted frames.
Frames with errors are usually rejected by the DS33R11. The user has the option of accepting frames by settings
in Receive Frame Rejection Control register (SU.RFRC). The user can program whether to reject or accept frames
with the following errors:
Note that frames received that are runt frames or frames with collision will automatically be rejected.
Table 9-5. Registers Related to Setting the Ethernet Port
Transmit Frame Resend
Control
Transmit Frame Status Low
and Transmit Frame Status
High
Receive Frame Status Byte 0
to 3
Receive Frame Rejection
Control
Receiver Maximum Frame
High and Receiver Maximum
Frame Low
MAC Control
•
•
•
•
•
•
MII error asserted during the reception of the frame
Dribbling bits occurred in the frame
CRC error occurred
Length error occurred—the length indicated by the frame length is inconsistent with the number of bytes
received
Control frame was received. The mode must be full duplex
Unsupported control frame was received
REGISTER
to SU.RFSB3. Note the frame status is the “real time” status and hence the value will change as new
SU.RMFSRH
SU.RFSB0
SU.TFSL
SU.RMFSRL
SU.MACCR
SU.RFRC
SU.TFRC
SU.TFSH
NAME
and
to 3
and
This register determines if the current frame is retransmitted
due to various transmit errors.
These two registers provide the real-time status of the
transmit frame. Only apply to the last frame transmitted.
These registers provide the real-time status for the received
frame. Only apply to the last frame received.
This register provides settings for reception or rejection of
frame based on errors detected by the MAC.
The settings for this register provide the maximum size of
frames to be accepted from the MII/RMII receive interface.
This register provides configuration control for the MAC.
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FUNCTION