r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 1048

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 19 Synchronous Serial Communication Unit (SSU)
Rev. 1.00 Sep. 19, 2008 Page 1020 of 1270
REJ09B0466-0100
Figure 19.5 (2) Example of Transmission Operation (SSU Mode) When 16-Bit Data Length
When 8-Bit Data Length is Selected (SSTDR0 is Valid) with CPOS = 0 and CPHS = 0
is Selected (SSTDR0 and SSTDR1 are Valid) with CPOS = 0 and CPHS = 0
User operation
User operation
LSI operation
LSI operation
(MSB first)
(LSB first)
Figure 19.5 (1) Example of Transmission Operation (SSU Mode)
SSCK
TDRE
TEND
SSO
SSO
SSCK
TDRE
TEND
SCS
SCS
SSO
Data written to SSTDR0 and SSTDR1
Data written to SSTDR0
TXI interrupt
generated
Bit
Bit
7
0
Bit
0
Bit
Bit
6
1
Bit
(LSB first transmission)
1
Bit
Bit
5
2
Bit
2
SSTDR1
SSTDR0
1 frame
SSTDR0
Bit
Bit
4
3
Bit
3
Bit
Bit
Bit
4
3
4
Bit
Bit
Bit
5
2
5
TEI interrupt
generated
Bit
Bit
Bit
6
1
6
1 frame
TXI interrupt generated
Bit
Bit
Bit
0
7
7
Bit
Bit
7
0
Data written to SSTDR0
Bit
Bit
TXI interrupt
6
1
generated
Bit
Bit
Bit
7
2
5
SSTDR1
SSTDR0
(MSB first transmission)
Bit
Bit
Bit
6
3
4
Bit
Bit
Bit
5
4
3
1 frame
SSTDR0
Bit
Bit
Bit
4
5
2
TEI interrupt generated
Bit
Bit
Bit
3
6
1
Bit
Bit
Bit
2
7
0
TEI interrupt
generated
Bit
1
Bit
0