BMSKTOPASA900(DCE) Toshiba, BMSKTOPASA900(DCE) Datasheet - Page 383

• Manufacturer Part Number: BMSKTOPASA900(DCE)
• Description: KIT STARTER TMPA900 USB JTAG
• Manufacturer: Toshiba
• Series: TOPASr
• Type: MCUr

Specifications of BMSKTOPASA900(DCE)

• Contents: Evaluation Board, Cable(s), Software and Documentation
• For Use With/related Products: TMPA900CMXBG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7. UART0FR (UART0 Flag register)
[31:9]
[8]
[7]
[6]
[5]
[4]
[3]
[2]
[1]
[0]
Bit
<FEN> of the UART0LCR_H register.
(1) Transmit FIFO
(2) Receive FIFO
The <TXFE>, <RXFF>, <TXFF>, and <RXFE> bits differ depending on the state of the
−
RI
TXFE
RXFF
TXFF
RXFE
BUSY
DCD
DSR
CTS
Symbol
The transmit FIFO is an 8-bit wide, 16-location deep FIFO memory buffer. CPU data
written across the APB interface is stored in the FIFO until it is read out by the
transmit logic. The transmit FIFO can be disabled to act like a one-byte holding
register.
The receive FIFO is a 12-bit wide, 16-location deep, FIFO memory buffer. Received
data and corresponding error bits are stored in the receive FIFO by the receive logic
until they are read out by the CPU across the APB interface. The receive FIFO can be
disabled to act like a one-byte holding register.
Bit
−
RO
RO
RO
RO
RO
RO
RO
RO
RO
Type
Undefined
Undefined
0y1
0y0
0y0
0y1
0y0
Undefined
Undefined
Undefined
Reset
Value
TENTATIVE
TMPA900CM- 382
Read as undefined.
Ring indicator flag
0y1: Modem status input = 0
Transmit FIFO empty flag
0y1: Empty
0y0: Not empty
Receive FIFO full flag
0y1: Full
0y0: Not full
Transmit FIFO full flag
0y1: Full
0y0: Not full
Receive FIFO empty flag
0y1: Empty
0y0: Not empty
BUSY flag
0y1: The UART is transmitting
0y0: The UART has stopped
Data carrier detect (DCD) flag
0y1: Modem status input = 0
Data set ready (DSR) flag
0y1: Modem status input = 0
Clear To Send (CTS) flag
0y1: Modem status input = 0
data. (BUSY)
FIFO mode (FEN = 1)
transmitting data.
Description
Address = (0xF200_0000) + (0x0018)
Read as undefined.
Ring indicator flag
0y1: Modem status input = 0
Transmit hold register empty flag
0y1: Empty
0y0: Not empty
Receive hold register full flag
0y1: Full
0y0: Not full
Transmit hold register full flag
0y1: Full
0y0: Not full
Receive hold register empty flag
0y1: Empty
0y0: Not empty
BUSY flag:
0y1: The UART is transmitting
0y0: The UART has stopped
Data carrier detect (DCD) flag
0y1: Modem status input = 0
Data set ready (DSR) flag
0y1: Modem status input = 0
Clear To Send (CTS) flag
0y1: Modem status input = 0
Character mode (FEN = 0)
data. (BUSY)
transmitting data.
TMPA900CM
2009-10-14