Functional Description
XPR &
/TIN & /PCE
Has a
frame been
sent since last
CMDR:XRES
N
Y
Y
N
End
?
Y
A frame
is currently
transmitted
Continue writing the contents
of the frame to XFIFO & issuing
Xmit command
?
N
Last frame
written to XFIFO was
an I-frame
The transmission of the I-frame
was successful and has been
acknowledged by the peer station
ACK1
?
N
Transmission of the last
frame has finished
Xmit command
SRC *
ACK2
?
Y
ACK1 & ACK2
* Special Request Condition : Last frame written to the XFIFO was an answer to an identity
request following a yet unacknowledged I-frame
ITD05893
Figure 63
Interrupt Service Routine after XPR
Semiconductor Group
134
INFINEON [ Infineon ]
