r4f2456 Renesas Electronics Corporation., r4f2456 Datasheet - Page 1112

• Manufacturer Part Number: r4f2456
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 20 Synchronous Serial Communication Unit (SSU)
Rev. 1.00 Sep. 19, 2008 Page 1082 of 1342
REJ09B0467-0100
Figure 20.5 (3) Example of Transmission Operation (SSU Mode) When 24-bit data length is
When 32-bit data length is selected (SSTDR0, SSTDR1, SSTDR2 and SSTDR3 are valid)
selected (SSTDR0, SSTDR1, and SSTDR2 are valid) with CPOS = 0 and CPHS = 0
User operation
LSI operation
Figure 20.5 (4) Example of Transmission Operation (SSU Mode)
(MSB first)
(LSB first)
SSCK
TDRE
TEND
User operation
SSO
SSO
SCS
LSI operation
(MSB first)
(LSB first)
SSCK
TDRE
TEND
SSO
SSO
SCS
Data written to SSTDR0, SSTDR1, and SSTDR2
Data written to SSTDR0, SSTDR1, SSTDR2 and SSTDR3
with CPOS = 0 and CPHS = 0
Bit
Bit
0
7
Bit
Bit
Bit
Bit
0
7
1
6
SSTDR3
SSTDR2
SSTDR0
SSTDR0
to
to
to
to
Bit
Bit
Bit
Bit
0
7
6
1
Bit
Bit
Bit
Bit
0
7
7
0
SSTDR2
SSTDR1
Bit
Bit
to
to
0
7
TXI interrupt generated TEI interrupt generated
TXI interrupt generated
1 frame
1 frame
Bit
Bit
Bit
Bit
7
0
1
6
SSTDR1
SSTDR1
Bit
Bit
0
7
to
to
SSTDR1
SSTDR2
to
to
Bit
Bit
6
1
Bit
Bit
Bit
Bit
7
0
7
0
Bit
Bit
0
7
Bit
Bit
0
7
SSTDR3
SSTDR0
to
to
Bit
Bit
1
6
SSTDR0
SSTDR2
Bit
Bit
TEI interrupt generated
7
0
to
to
Bit
Bit
6
1
Bit
Bit
7
0