TXC-06885BIOG Transwitch Corporation, TXC-06885BIOG Datasheet - Page 101

• 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

2794
2798
279C
27A0
PRELIMINARY TXC-06885-MB, Ed. 6A
February 2005
(hex)
Addr
RW
RO
RW
RO
RW
RO
RW
RO
Mode
12-0
31-13
12-0
31-13
12-0
31-13
12-0
31-13
range
Bit
value after
1FFF
0
1FFF
0
1FFF
0
1FFF
0
Default
reset
- Memory Maps and Bit Descriptions -
Flow Control High Threshold CMAC B: This register sets the high
threshold in multiples of 8 bytes, for Ports 8 to 15 (serviced by
Configurable MAC B), for generation of PAUSE frames or asserting raise
carrier. In the event one of the Ethernet port’s ingress FIFO (serviced by
Configurable MAC B) reaches this threshold, a Pause frame will be sent
or raise carrier will be asserted from that port.
Note: Automatic pause frame generation needs to be enabled.
Reserved
Flow Control Low Threshold CMAC B: This register sets the low
threshold in multiples of 8 bytes, for Ports 8 to 15 (serviced by
Configurable MAC B), to stop generation of PAUSE frames or de-
asserting raise carrier. In the event one of the Ethernet port’s ingress
FIFO (serviced by Configurable MAC B) reaches this threshold, when in
the pause frame generation state, further generation of Pause frames
will halt or raise carrier will be de-asserted from that port.
Note: Automatic pause frame generation needs to be enabled. Pause
frame generation state is reached once the Pause high threshold is
crossed.
Reserved
Flow Control High Threshold CMAC C: This register sets the high
threshold in multiples of 8 bytes, for Ports 16 to 23 (serviced by
Configurable MAC C), for generation of PAUSE frames or asserting
raise carrier. In the event one of the Ethernet port’s ingress FIFO
(serviced by Configurable MAC C) reaches this threshold, a Pause
frame will be sent or raise carrier will be asserted from that port.
Note: Automatic pause frame generation needs to be enabled.
Reserved
Flow Control Low Threshold CMAC C: This register sets the low
threshold in multiples of 8 bytes, for Ports 16 to 23 (serviced by
Configurable MAC C), to stop generation of PAUSE frames or de-
asserting raise carrier. In the event one of the Ethernet port’s ingress
FIFO (serviced by Configurable MAC C) reaches this threshold, when in
the pause frame generation state, further generation of Pause frames
will halt or raise carrier will be de-asserted from that port.
Note: Automatic pause frame generation needs to be enabled. Pause
frame generation state is reached once the Pause high threshold is
crossed.
Reserved
Description
Envoy-CE4 Device
DATA SHEET
TXC-06885
1 01 o f 12 8