US 6,982,976 B2 | ||
Datapipe routing bridge | ||
Peter Galicki, Sugarland, Tex. (US); Cheryl S. Shepherd, Houston, Tex. (US); and Jonathan H. Thorn, Gaithersburg, Md. (US) | ||
Assigned to Texas Instruments Incorporated, Dallas, Tex. (US) | ||
Filed on Jul. 13, 2001, as Appl. No. 9/905,378. | ||
Claims priority of provisional application 60/224607, filed on Aug. 11, 2000. | ||
Prior Publication US 2002/0018470 A1, Feb. 14, 2002 | ||
Int. Cl. H04L 12/28 (2006.01); H04L 12/56 (2006.01); G06F 13/00 (2006.01) |
U.S. Cl. 370—390 | 17 Claims |
1. A data routing unit comprising:
a data receiver;
a data transmitter;
at least one set of data output lines, each of said at least one set of data output lines consists of a plurality of data
lines and a data routing unit clock line;
said data transmitter generating data transmitted on said data output lines synchronous with a transmitter clock signal on
said data routing unit clock line;
a bridge circuit connected to supply data to said data receiver and to receive data from said data transmitter, said bridge
circuit connected to at least one set of data input lines and to said at least one set of data output lines, said bridge circuit
responsive to a header of a data packet received from said data transmitter or received from said at least one set of data
input lines to selectively route said received data packet to (1) said data receiver circuit, (2) a selected set of said at
least one set of data output lines, or (3) both said data receiver circuit and a selected set of said at least one set of
data output lines dependent upon said header;
an input/output memory connected to said data receiver for storing data received by said data receiver and to said data transmitter
for storing data to be transmitted by said data transmitter; and
a central processing unit connected said input/output memory for storing data into said input/output memory and reading data
from said input/output memory, said central processing unit operating in synchronism with a CPU clock which is asynchronous
with said transmitter clock signal.
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