TXC-06885BIOG Transwitch Corporation, TXC-06885BIOG Datasheet - Page 113

• Manufacturer Part Number: TXC-06885BIOG
• Manufacturer: Transwitch Corporation

Specifications of TXC-06885BIOG

• Operating Supply Voltage (typ): 1.8/3.3V
• Operating Temperature Classification: Industrial
• Package Type: BGA
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

4084
(cont.)
(hex)
Addr
PRELIMINARY TXC-06885-MB, Ed. 6A
February 2005
RW
Mode
21
22
23
24
25
26
Range
Bit
Port 0 Ethernet Status and Configuration Register Description
value after
0
0
0
0
0
0
Default
reset
- Memory Maps and Bit Descriptions -
Tx Source Address Substitute Enable: Transmitter Source Address
Substitution Enable.
1 - Substitute the outgoing source address field in the Ethernet header
with the programmed source address in the MAC (Addresses 0x4040 and
0x4044).
Rx CRC Remove: Configures the removal of the CRC (FCS) bytes from
the Ethernet frame received at the Rx interface destined for the SPI-3
output interface.
1 - Remove CRC
GTx Clock Select: The Rx clock is used when connecting the Envoy-
CE4 to another MAC in a MAC-to-MAC configuration.
0 - Tx clock
1 - Rx clock
For normal operation, this bit should set to 0.
Discard Rx Truncated frames:
0 - Do not discard the frame if it is truncated
1 - Discard the frame if it is truncated
If the IFIFO is configured for Store and Forward mode, the frame will be
dropped and will not appear on the SPI port. If the IFIFO is configured for
Streaming mode, the frame will appear on the SPI port with 4 additional
bad CRC bytes appended to it.
DISC Rx Length Field Mismatch: Discard unmatched length field.
0 - Do not discard the frame if the frame length field does not match the
actual data length field
1 - Discard the frame if the frame length field does not match the actual
data length field
If the IFIFO is configured for Store and Forward mode, the frame will be
dropped and will not appear on the SPI port. If the IFIFO is configured for
Streaming mode, the frame will appear on the SPI port with 4 additional
bad CRC bytes appended to it.
DISC Rx CRC Field Mismatch: Discard frames with CRC error.
0 - Do not discard the frame if it has a CRC error
1 - Discard the frame if it has a CRC error
If the IFIFO is configured for Store and Forward mode, the frame will be
dropped and will not appear on the SPI port. If the IFIFO is configured for
Streaming mode, the frame will appear on the SPI port with 4 additional
bad CRC bytes appended to it.
Description
Envoy-CE4 Device
DATA SHEET
TXC-06885
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