HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 225
HD6417034B
Manufacturer Part Number
HD6417034B
Description
32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417034B.pdf
(687 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417034BVFN20
Manufacturer:
RENESAS
Quantity:
101
Company:
Part Number:
HD6417034BVFW20
Manufacturer:
MITSUBISHI
Quantity:
101
Company:
Part Number:
HD6417034BVXN20
Manufacturer:
Renesas Electronics America
Quantity:
10 000
- Current page: 225 of 687
- Download datasheet (7Mb)
External-Pin Round-Robin Mode: External-pin round-robin mode switches the priority levels of
channel 0 and channel 1, which are the channels that can receive transfer requests from external
pins DREQ0 and DREQ1. The priority levels are changed after each (byte or word) transfer on
channel 0 or channel 1 is completed. The channel which just finished the transfer rotates to the
bottom of the priority order. The priority levels of channels 2 and 3 do not change. The initial
priority order after a reset is channel 3 > channel 2 > channel 1 > channel 0.
Figure 9.5 shows how the priority order changes when channel 0 and channel 1 transfers are
requested simultaneously and a channel 0 transfer is requested again after both channels finish
their transfers. The DMAC operates as follows:
1. Transfer requests are generated simultaneously for channels 1 and 0.
2. Channel 1 has a higher priority, so the channel 1 transfer begins first (channel 0 waits for
3. When the channel 1 transfer ends, channel 1 becomes the lowest priority.
4. The channel 0 transfer begins.
5. When the channel 0 transfer ends, channel 0 becomes the lowest priority.
6. A channel 0 transfer request occurs again.
7. The channel 0 transfer begins.
8.
transfer).
When the channel 0 transfer ends, the priority order does not change, because channel 0 is
already the lowest priority.
Section 9 Direct Memory Access Controller (DMAC)
Rev. 7.00 Jan 31, 2006 page 199 of 658
REJ09B0272-0700
Related parts for HD6417034B
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
(HD64 Series) Hitachi Single-Chip Microcomputer
Manufacturer:
Hitachi Semiconductor
Datasheet:
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: