Toshiba H1 Series Data Book page 488

(k) <RXE>
In UNIT receive mode, receives only 1 UNIT data by writing "1".
When reading receive data register (SPIRD) with the condition "1", receives one time
additionally.
In sequential mode, receiving is kept sequentially until FIFO becomes full by writing
"1". During receiving, it is possible to change enable/disable. If writing "0"during
receiving, receiving is stopped after finishing receiving the UNIT data in receiving.
[Transmit/Receive operation mode]
This SPI Controller supports 6 operations as below.
These are selected in <FDPXE>, <RXMOD>, <RXE>, <TXMOD>, <TXE> registers.
Operation mode
(1) UNIT transmit
(2) Sequential transmit
(3) UNIT receive
(4) Sequential receive
(5) UNIT transmit/receive
(6)Sequential transmit/receive
x: don't care
Table 3.17.2 Transmit/Receive operation mode
Register setting
<FDPXE> <TXMOD> <TXE> <RXMOD> <RXE>
0 0 1
0 1 1
0 x x
0 x x
1 0 1
1 1 1
92CZ26A-485
x x Transmit written data per UNIT
x x Transmit written data in FIFO sequentially
0 1 Receive only 1 UNIT of data
1 1 Receive automatically if buffer has space
0 1 Transmit/receive 1 UNIT of data with aligning
transmit/receive data per each UNIT
1 1 Transmit/receive sequentially with aligning
transmit/receive data per each UNIT
TMP92CZ26A
Description