15 Quad Synchronous Serial Interface (QSPI)
S1C31D50/D51 TECHNICAL MANUAL
Seiko Epson Corporation
15-21
(Rev. 2.00)
Data receiving operations (8/16-bit read)
The 8 and 16-bit read operations are the same as the 32-bit read operation except that data are not prefetched
into the FIFO.
n
2
0/1
HCLK
HSEL
HADDR
HTRANS
HSIZE
HREADY
HRDATA
QSPICLKn
QSDIOn[3:0]
Address cycle
(high-order 8/16 bits)
Address cycle
(low-order 16 bits)
Dummy
cycle
QSPI_nMOD register
CPHA bit
1
0
CPOL bit
1
0
n
HCLK
HSEL
HADDR
HTRANS
HSIZE
HREADY
HRDATA
QSPICLKn
QSDIOn[3:0]
Dummy cycle
QSPI_nMOD register
CPHA bit
1
0
CPOL bit
1
0
Data cycle
Figure 15.5.6.4 Data Receiving Operation in Memory Mapped Access Mode - First 8/16-bit Read