NXP Semiconductors MWCT101 S Series, Reference Manual

Page: 1506 / 1761

Address match operation functions in the same way for both MATCH[MA1] and
MATCH[MA2] fields.
• If only one of BAUD[MAEN1] and BAUD[MAEN2] is asserted, a marked address
is compared only with the associated match register field and data is transferred to
the receive data buffer only on a match.
• If BAUD[MAEN1] and BAUD[MAEN2] are asserted, a marked address is compared
with both match registers and data is transferred only on a match with either of the
MATCH[MA1] or MATCH[MA2] fields.
47.4.4.2.5 Idle Match operation
Idle match operation is enabled when the BAUD[MAEN1] or BAUD[MAEN2] bit is set
and BAUD[MATCFG] is equal to 01. In this function, the first character received by the
RXD pin after an idle line condition is considered an address and is compared with the
associated MATCH[MA1] or MATCH[MA2] field. The character is only transferred to
the receive buffer, and STAT[RDRF] is set, if the comparison matches. All subsequent
characters are considered to be data associated with the address and are transferred to the
receive data buffer until the next idle line condition is detected. If no address match
occurs then no transfer is made to the receive data buffer, and all following frames until
the next idle condition are also discarded. If both the BAUD[MAEN1] and
BAUD[MAEN2] bits are negated, the receiver operates normally and all data received is
transferred to the receive data buffer.
Idle match operation functions in the same way for both MATCH[MA1] or
MATCH[MA2] fields.
• If only one of BAUD[MAEN1] and BAUD[MAEN2] is asserted, the first character
after an idle line is compared only with the associated match register and data is
transferred to the receive data buffer only on a match.
• If BAUD[MAEN1] and BAUD[MAEN2] are asserted, the first character after an idle
line is compared with both MATCH[MA1] or MATCH[MA2] fields and data is
transferred only on a match with either of the fields.
47.4.4.2.6 Match On Match Off operation
Match on, match off operation is enabled when both BAUD[MAEN1] and
BAUD[MAEN2] are set and BAUD[MATCFG] is equal to 10. In this function, a
character received by the RXD pin that matches MATCH[MA1] is received and
transferred to the receive buffer, and STAT[RDRF] is set. All subsequent characters are
considered to be data and are also transferred to the receive data buffer, until a character
Functional description
MWCT101xS Series Reference Manual, Rev. 3, 07/2019
1506 NXP Semiconductors