R0K572011S000BE Renesas Electronics America, R0K572011S000BE Datasheet - Page 829

• Manufacturer Part Number: R0K572011S000BE
• Description: KIT STARTER FOR SH7201
• Manufacturer: Renesas Electronics America
• Series: Renesas Starter Kits (RSK)r
• Type: MCUr

Specifications of R0K572011S000BE

• Contents: CPU Board, LCD Display Module, E8 Emulator, Cable, QuickStart Guide and CD-ROM
• For Use With/related Products: SH7201
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

SH7201 Group
Section 18 Serial Sound Interface (SSI)
18.4.4
Transmit Operation
Transmission can be controlled either by DMA or interrupt.
DMA control is preferred to reduce the processor load. In DMA control mode the processor will
only receive interrupts if there is an underflow or overflow of data or the DMAC has finished its
transfer.
The alternative method is using the interrupts that the SSI module generates to supply data as
required. This mode has a higher interrupt load as the module is only double buffered and will
require data to be written at least every system word period.
When disabling the module, the SSI clock* must remain present until the SSI module is in idle
state, indicated by the IIRQ bit.
Figure 18.20 shows the transmit operation in DMA control mode, and figure 18.21 shows the
transmit operation in interrupt control mode.
Note: * Input clock from the SSISCK pin when SCKD = 0.
Oversampling clock when SCKD = 1.
R01UH0026EJ0300 Rev. 3.00
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Sep 24, 2010