R0K572030S000BE Renesas Electronics America, R0K572030S000BE Datasheet - Page 846

• Manufacturer Part Number: R0K572030S000BE
• Description: KIT DEV FOR SH7203
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K572030S000BE

• Contents: CPU Board, LCD Module, E10A-Lite Emulator, Cable, QuickStart Guide and CD-ROM
• Silicon Manufacturer: Renesas
• Kit Contents: Board
• Silicon Family Name: SH7203
• Silicon Core Number: R5S72030W200FP
• Tool / Board Applications: General Purpose MCU, MPU, DSP, DSC
• Mcu Supported Families: SH7203
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: SH7203
• Lead Free Status / Rohs Status: Compliant

Section 16 Synchronous Serial Communication Unit (SSU)
(2)
Data Transmission
Figure 16.5 shows an example of transmission operation, and figure 16.6 shows a flowchart
example of data transmission.
When transmitting data, the SSU operates as shown below.
In master mode, the SSU outputs a transfer clock and data. In slave mode, when a low level signal
is input to the SCS pin and a transfer clock is input to the SSCK pin, the SSU outputs data in
synchronization with the transfer clock.
Writing transmit data to SSTDR after the TE bit is set to 1 clears the TDRE bit in SSSR to 0, and
the SSTDR contents are transferred to SSTRSR. After that, the SSU sets the TDRE bit to 1 and
starts transmission. At this time, if the TIE bit in SSER is set to 1, a transmit-data-empty SSTXI
interrupt is generated.
When 1-frame data has been transferred with TDRE = 0, the SSTDR contents are transferred to
SSTRSR to start the next frame transmission. When the 8th bit of transmit data has been
transferred with TDRE = 1, the TEND bit in SSSR is set to 1 and the state is retained. At this time,
if the TEIE bit is set to 1, a transmit-end SSTXI interrupt is generated. After transmission, the
output level of the SSCK pin is fixed high when CPOS = 0 and low when CPOS = 1.
While the ORER bit in SSSR is set to 1, transmission is not performed. Check that the ORER bit
is cleared to 0 before transmission.
Rev. 3.00 Sep. 28, 2009 Page 814 of 1650
REJ09B0313-0300