R8A66597BG RENESAS [Renesas Technology Corp], R8A66597BG Datasheet - Page 139
R8A66597BG
Manufacturer Part Number
R8A66597BG
Description
ASSP (USB2.0 2 Port Host/1 Port Peripheral Controller)
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.R8A66597BG.pdf
(185 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R8A66597BG
Manufacturer:
RENESAS/瑞萨
Quantity:
20 000
Company:
Part Number:
R8A66597BG#DF1S
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 139 of 185
- Download datasheet (2Mb)
R8A66597FP/DFP/BG
3.4.3
3.4.3.1 DMA Transfer Outline
3.4.3.2 DMA Control Signal Selection
R e v 1 . 0 1
DREQ
DACK
RD/W R
CS
ADDR
D15-0
DEND
DREQ
DACK
CPU bus 0
CPU bus 1
CPU bus 2
CPU bus 3
SPLIT bus
SD7-0
DEND
*1)
CPU bus 1 DMA transfer
SPLIT bus DMA transfer
DMA Transfer (DxFIFO Port)
Pipes 1-9 can be used for FIFO port access with DMAC. When access becomes enabled for the pipe set by DMA, the
DREQ signal is asserted.
The DMA transfer can be executed in the cycle steal transfer mode, which asserts the DREQ signal every time one
data (8-bit or 16-bit) is transferred, or in the burst transfer mode, in which the DREQ signal is continually asserted until
all data transfers in the buffer memory are completed. The timing is described in detail in “Chapter 4. Electric
Characteristics.”
Select the FIFO port transfer unit (8 bits or 16 bits) with the DxFIFOSEL register MBW bit and the DMA transfer pipe
with the CURPIPE bit. Note that the pipe (value set in CURPIPE bit) should not be changed during a DMA transfer.
Select the pin for DMA transfers in the DMAxCFG register DFORM bit and control the DREQx_N pin with the
DxFIFOSEL register DREQE bit. Table 3.17provides the list of DMA control pins and Figure 3.16 shows the FIFO port
access method and the DMA control pin.
Method
Access
When setting this access method, set the CS_N to inactive (fix to “High”) while accessing the DxFIFO port.
O c t 1 7 , 2 0 0 8
DREQE
0
1
1
1
1
Register
0
0
0
0
1
p a g e 1 3 9 o f 1 8 3
DFORM
Figure 3.16 FIFO Port Access and DMA Control Pin
0
0
1
1
1
0
0
0
1
0
Table 3.17 DMA Control Pin List
DATA Bus
SPLIT
CPU
CPU
CPU
CPU
DREQ
○
○
○
○
-
DACK
Pin
○
○
○
-
-
CPU bus 2 DMA transfer
RD/WR
○
○
○
-
-
ADDR
+CS
*1)
*1)
○
○
-
CPU access
DMA through CPU bus
DMA through CPU bus
DMA through CPU bus
SPLIT bus
Reference
Related parts for R8A66597BG
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Renesas Technology Corp [Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series]
Manufacturer:
Renesas Electronics Corporation.
Datasheet:
Part Number:
Description:
Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer Renesas H8S Family/H8S/2100 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
RENESAS MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
RENESAS MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
RENESAS MCU
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet:
Part Number:
Description:
Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family / SH7641 Series
Manufacturer:
RENESAS [Renesas Technology Corp]
Datasheet: