
The IDLE status flag includes logic that prevents it from getting set repeatedly when the
LPUART_RX line remains idle for an extended period of time. IDLE is cleared by
writing 1 to the LPUART_STAT[IDLE] flag. After LPUART_STAT[IDLE] has been
cleared, it cannot become set again until the receiver has received at least one new
character and has set LPUART_STAT[RDRF].
If the associated error was detected in the received character that caused
LPUART_STAT[RDRF] to be set, the error flags - noise flag (LPUART_STAT[NF]),
framing error (LPUART_STAT[FE]), and parity error flag (LPUART_STAT[PF]) - are
set at the same time as LPUART_STAT[RDRF]. These flags are not set in overrun cases.
If LPUART_STAT[RDRF] was already set when a new character is ready to be
transferred from the receive shifter to the receive data buffer, the overrun
(LPUART_STAT[OR]) flag is set instead of the data along with any associated NF, FE,
or PF condition is lost.
If the received character matches the contents of MATCH[MA1] and/or MATCH[MA2]
then the LPUART_STAT[MA1F] and/or LPUART_STAT[MA2F] flags are set at the
same time that LPUART_STAT[RDRF] is set.
At any time, an active edge on the LPUART_RX serial data input pin causes the
LPUART_STAT[RXEDGIF] flag to set. The LPUART_STAT[RXEDGIF] flag is
cleared by writing a 1 to it. This function depends on the receiver being enabled
(LPUART_CTRL[RE] = 1).
Functional description
K32 L2A Reference Manual, Rev. 2, 01/2020
850
NXP Semiconductors
Содержание K32 L2A Series
Страница 2: ...K32 L2A Reference Manual Rev 2 01 2020 2 NXP Semiconductors...
Страница 42: ...K32 L2A Reference Manual Rev 2 01 2020 42 NXP Semiconductors...
Страница 122: ...Flash Memory Clock K32 L2A Reference Manual Rev 2 01 2020 122 NXP Semiconductors...
Страница 146: ...Module operation in low power modes K32 L2A Reference Manual Rev 2 01 2020 146 NXP Semiconductors...
Страница 158: ...Debug and security K32 L2A Reference Manual Rev 2 01 2020 158 NXP Semiconductors...
Страница 174: ...Module Signal Description Tables K32 L2A Reference Manual Rev 2 01 2020 174 NXP Semiconductors...
Страница 246: ...Application information K32 L2A Reference Manual Rev 2 01 2020 246 NXP Semiconductors...
Страница 322: ...Kinetis Bootloader Status Error Codes K32 L2A Reference Manual Rev 2 01 2020 322 NXP Semiconductors...
Страница 344: ...Application initialization information K32 L2A Reference Manual Rev 2 01 2020 344 NXP Semiconductors...
Страница 374: ...CMP Trigger Mode K32 L2A Reference Manual Rev 2 01 2020 374 NXP Semiconductors...
Страница 384: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 384 NXP Semiconductors...
Страница 592: ...Application Information K32 L2A Reference Manual Rev 2 01 2020 592 NXP Semiconductors...
Страница 602: ...Initialization and application information K32 L2A Reference Manual Rev 2 01 2020 602 NXP Semiconductors...
Страница 656: ...Functional Description K32 L2A Reference Manual Rev 2 01 2020 656 NXP Semiconductors...
Страница 664: ...Functional Description K32 L2A Reference Manual Rev 2 01 2020 664 NXP Semiconductors...
Страница 744: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 744 NXP Semiconductors...
Страница 762: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 762 NXP Semiconductors...
Страница 806: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 806 NXP Semiconductors...
Страница 868: ...Integer square root K32 L2A Reference Manual Rev 2 01 2020 868 NXP Semiconductors...
Страница 976: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 976 NXP Semiconductors...
Страница 1012: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1012 NXP Semiconductors...
Страница 1094: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1094 NXP Semiconductors...
Страница 1132: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1132 NXP Semiconductors...
Страница 1182: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1182 NXP Semiconductors...
Страница 1290: ...Functional description K32 L2A Reference Manual Rev 2 01 2020 1290 NXP Semiconductors...
Страница 1344: ...USB Voltage Regulator Module Signal Descriptions K32 L2A Reference Manual Rev 2 01 2020 1344 NXP Semiconductors...
Страница 1356: ...Initialization Application Information K32 L2A Reference Manual Rev 2 01 2020 1356 NXP Semiconductors...