TXC-06885BIOG Transwitch Corporation, TXC-06885BIOG Datasheet - Page 78

• 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

Envoy-CE4 Device
DATA SHEET
TXC-06885
7 8 o f 12 8
6.5.3.2 Host Initiated PAUSE Frame Generation
The Host device can query Envoy-CE4 for the status of each Ingress FIFO (per channel). The
values for the indication of near full status and near empty status, are programmable. They are
the Ingress FIFO Control High and Low Watermarks associated with the Ingress FIFOs. The
Envoy-CE4 provides the host with the ability to generate a PAUSE control frame from the
Envoy-CE4. This is done by the Host enabling the PAUSE generate configuration bit. The Host
can generate a PAUSE control frame with a non-zero value for pause_time, to the remote
device across the link with Envoy-CE4, when the Ingress FIFOs reach the High Watermark and
also generate a PAUSE control frame with a null value for pause_time, when the Ingress FIFO
reaches the Low Watermark. This allows the Host to regulate the flow control mechanism.
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Operation
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PRELIMINARY TXC-06885-MB, Ed. 6A
February 2005