27-40
MC9328MX1 Reference Manual
MOTOROLA
Universal Asynchronous Receiver/Transmitters (UART) Modules
ESCF
Bit 11
Escape Sequence Interrupt Flag
—Indicates if an escape
sequence was detected. ESCF is asserted when the ESCEN bit
is set and an escape sequence is detected in the RxFIFO. Clear
ESCF by writing 1 to it. Writing 0 to ESCF has no effect.
0 = No escape sequence
detected
1 = Escape sequence detected
(write 1 to clear)
FRAMERR
Bit 10
Frame Error Interrupt Flag
—Indicates that a frame error is
detected. The UART_PFERR interrupt generated by this. Clear
FRAMERR by writing 1 to it. Writing 0 to FRAMERR has no
effect.
0 = No frame error detected
1 = Frame error detected
RRDY
Bit 9
Receiver Ready Interrupt / DMA Flag
—Indicates that the
RxFIFO data level is above the threshold set by the RXFL bits.
(See the RXFL bits description for setting the interrupt threshold.)
When asserted, RRDY generates a maskable interrupt or DMA
request. In conjunction with the CHARRDY bit in the URXDn_1 or
URXDn_2 register, the software can continue to read the RxFIFO
in an interrupt service routine until the RxFIFO is empty. RRDY is
automatically cleared when data level in the RxFIFO goes below
the set threshold level. At reset, RRDY is set to 0.
0 = No character ready
1 = Character(s) ready
(interrupt posted)
Reserved
Bits 8-7
Reserved—This bit is reserved and should read 0.
RXDS
Bit 6
Receiver IDLE Interrupt Flag
—Indicates that the receiver state
machine is in an IDLE state, the next state is IDLE, and the
receive pin is high. RXDS is automatically cleared when a
character is received. RXDS is active only when the receiver is
enabled.
0 = Receive in progress
1 = Receiver is IDLE
AIRINT
Bit 5
Asynchronous IR WAKE Interrupt Flag
—Indicates that the IR
WAKE pulse was detected (on the RXD pin). Clear AIRINT by
writing 1 to it. Writing 0 to AIRINT has no effect.
0 = No pulse was detected on
the RXD pin
1 = A pulse was detected on
the RXD pin
AWAKE
Bit 4
Asynchronous WAKE Interrupt Flag
—Indicates that a falling
edge was detected on the RXD pin. Clear AWAKE by writing 1 to
it. Writing 0 to AWAKE has no effect.
0 = No falling edge was
detected on the RXD pin
1 = A falling edge was detected
on the RXD pin
Reserved
Bits 3–0
Reserved—These bits are reserved and should read 0.
Table 27-20. UART1 Status Register 1 and UART2 Status Register 1 Description (Continued)
Name
Description
Settings
Содержание DragonBall MC9328MX1
Страница 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Страница 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Страница 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Страница 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Страница 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Страница 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Страница 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Страница 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Страница 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Страница 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Страница 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Страница 542: ...20 64 MC9328MX1 Reference Manual MOTOROLA Multimedia Card Secure Digital Host Controller Module MMC SD ...
Страница 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Страница 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Страница 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Страница 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Страница 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Страница 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Страница 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Страница 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...