SAB82538 Datasheet, PDF (161/253 Pages) Infineon Technologies AG – ICs for Communications

XON Character (READ/WRITE)
Value after RESET: 00_H
7
XON
XON7
SAB 82538
SAF 82538
ASYNC Mode
0
XON0 (offset: 24)
This register is used to specify the XON character. It can be used in conjunction with the
interrupt status ISR1.XON for automatic in-band flow control (if MODE.FLON = “0”). The
number of significant bits is determined by the programmed character length (right
justified).
A received character is considered to be recognized as a valid XON character
– if it is correctly framed (correct length),
– if its bits match the (unmasked) ones in the XON register over the programmed
character length,
– if it has correct parity (if applicable).
Received XON characters are always stored in the receive FIFO, similar to other
characters.
XOFF Character (READ/WRITE)
Value after RESET: 00_H
7
XOFF XOF7
0
XOF0 (offset: 25)
This register is used to specify the XOFF character. It can be used in conjunction with
the interrupt status ISR1.XOFF for automatic in-band flow control (if MODE.FLON = “1”),
or as a special character compare register for other purposes (if MODE.FLON = “0”). The
number of significant bits is determined by the programmed character length (right
justified).
A received character is considered to be recognized as a valid XOFF character
– if it is correctly framed (correct length),
– if its bits match the (unmasked) ones in the XOFF register over the programmed
character length,
– if it has correct parity (if applicable).
Received XOFF characters are always stored in the receive FIFO, similar to other
characters.
Semiconductor Group
161