15-36
Seiko Epson Corporation
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
QSPI Ch.
n
Transmit Data Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
QSPI_
n
TXD
15
–
0
TXD[15:0]
0x0000
H0
R/W
–
Bits 15
–
0
TXD[15:0]
Data can be written to the transmit data buffer through these bits. Writing to these bits
starts data transfer. Transmit data can be written when the QSPI_
n
INTF.TBEIF bit = 1
regardless of whether data is being output from the QSDIO
n
pins or not.
Note that the upper data bits that exceed the data bit length configured by the
QSPI_
n
MOD. CHLN[3:0] bits will not be output from the QSDIO
n
pin.
Note
: Be sure to avoid writing to the QSPI_
n
TXD register when the QSPI_
n
INTF.TBEIF
bit = 0. Other- wise, transfer data cannot be guaranteed.
QSPI Ch.
n
Receive Data Register
Register name
Bit
Bit name
Initial
Reset
R/W
Remarks
QSPI_
n
RXD
15
–
0
RXD[15:0]
0x0000
H0
R
–
Bits 15
–
0
RXD[15:0]
The receive data buffer can be read through these bits. Received data can be read when
the QSPI_
n
INTF.RBFIF bit = 1 regardless of whether data is being input from the QSDIO
n
pin or not.
Note that the upper bits that exceed the data bit length configured by the
QSPI_
n
MOD.CHLN[3:0] bits become 0.
Содержание S1C31D50
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