Texas Instruments TMS320C3x - Manual (Page 395)

Serial Ports
12-16
Figure 12–11. Serial Port Block Diagram
Receive Section Transmit Section
Receive
timer (16)
Transmit
timer (16)
Bit counter
(8/16/24/32)
Bit counter
(8/16/24/32)
RSR
(32)
XSR
(32)
DRR
(32)
DXR
(32)
Load
control
Load
control
CLKR CLKX
TSTAT
CLKR CLKX
TSTAT
Receive Clock
RINT
FSR
FSR FSX
FSX
Load
DX
DR DR
Load
DX DX
XINT