Texas Instruments TMS320C645X User Manual
Page 25
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Port 0
8 x 276 TX
8 x 276 RX
8 x 276 RX
8 x 276 TX
Port 1
8 x 276 TX
8 x 276 RX
Port 2
8 x 276 RX
8 x 276 TX
Port 3
Physical
layer
buffers
SERDES 0
SERDES 1
SERDES 2
SERDES 3
SERDES
differential
signals
4x mode
data path
TX buffering
32 x 276B
8 buffers per 1X port - all priorities
32 buffers per 4X port - 8 per priority
Transaction
mapping
layer
buffers
Logical
Load/store
unit (LSU)
Tx direct I/O
Maintenance
Messaging
TXU
Rx direct I/O
(MAU)
Memory
access unit
RXU
Messaging
buffer
4.5 KB Tx
shared
buffer
shared
4.5 KB Tx
handle
Queue
128-bit
DMA bus 128-bit
SRIO Functional Description
Figure 8. SRIO Conceptual Block Diagram
SPRU976 – March 2006
Serial RapidIO (SRIO)
25