r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1359

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

(1)
Transmission Using DMA Controller
Note: * When SSI error interrupt occurs (underflow/overflow), back to start
No
Yes
and execute flow again.
Figure 26.21 Transmission Using DMA Controller
Setup DMA controller to provide data
Wait for interrupt from DMAC or SSI
as required for transmission
specify configuration bits
More data to be send?
enable error interrupts
disable error interrupt,
Wait for idle interrupt
Disable SSI module,
Enable SSI module,
enable Idle interrupt
from SSI module
Release reset,
error interrupt?
Tx data been
enable DMA,
disable DMA
Has DMAC
completed?
in SSICR
End*
Start
SSI
Yes
Rev.1.00 Jan. 10, 2008 Page 1329 of 1658
Specify TRMD, EN, SCKD,
SWSD, MUEN, DEL, PDTA,
SDTA, SPDP, SWSP, SCKP,
SWL, DWL, CHNL
EN = 1,
DMEN = 1,
UIEN = 1, OIEN = 1
EN = 0,
DMEN = 0
UIEN = 0, OIEN = 0,
IIEN = 1
26. Serial Sound Interface (SSI) Module
REJ09B0261-0100