tmp19a43fzxbg TOSHIBA Semiconductor CORPORATION, tmp19a43fzxbg Datasheet - Page 256

• Manufacturer Part Number: tmp19a43fzxbg
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Note: If it is necessary to perform a soft reset during transmission, perform it twice consecutively.
<SWRST1:0>: Writing 10 and 01 in this order triggers a software reset. This initializes the
<WBUF>:
<DRCHG>:
<TXRUN>:
<RBFLL>:
<TBEMP>:
<SBLEN>:
Bit symbol
Read/Write
After reset
Function
Figure 3.11.14 Serial Mode Control Register 2 (SC3MOD2, for SIO3)
Transmit
buffer
empty flag
0: Full
1: Empty
TBEMP
7
mode register bits SC3MOD0<RXE>, SC3MOD2<TBEMP>, <RBFIL> and
<TXRUN>, control register bits SC3CR<OERR>, <PERR> and <FERR>, and
the internal logic.
Enables or disables the double-buffer for transmission (SCLK output/input)
and reception (SCLK output) in I/O interface mode and transmission in UART
mode. In other modes, the double-buffer is always enabled regardless of the
setting.
Specifies the direction of transfer in I/O interface mode. In UART mode, this
bit is fixed to 0 (LSB first).
This bit is a status flag which indicates whether transmission shift operation is
in progress. When this bit is set to 1, it indicates that data is being transmitted.
When this bit is set to 0, it indicates that transmission is completely finished (if
TBEMP = 1) or that the device is waiting with next transmit data stored in the
transmit buffer (if TBEMP = 0).
This bit is a flag which indicates whether the receive double-buffer is full.
RBFIL is set to 1 when data has been transferred from the receive shift
register to the receive double-buffer. It is cleared to 0 when the data has been
read. This flag has no meaning if the double-buffer is disabled.
This bit is a flag which indicates whether the transmit double-buffer is empty.
TBEMP is set to 1 when data has been transferred from the transmit
double-buffer to the transmit shift register, resulting in the transmit
double-buffer being empty. It is cleared to 0 when transmit data has been
written to the double-buffer. This flag has no meaning if the double-buffer is
disabled.
Specifies the transmit STOP bit length in UART mode.
1
Receive
buffer full
flag
0: Empty
1: Full
RBFLL
6
0
TMP1942CY/CZ-255
Transmi-ssi
on in
progress
flag
0: Stopped
1:Transmi-t
TXRUN
ting
5
0
R/W
STOP bit
length
0: 1 bit
1: 2 bits
SBLEN
4
0
Direction of
transfer
0: LSB first
1: MSB first
DRCHG
3
0
Double-buff
er enable
0: Disable
1: Enable
TMP1942CY/CZ
WBUF
2
0
Soft reset
Writing 10 then 01
triggers a reset.
SWRST1
W
1
0
SWRST0
W
0
0