BMSKTOPASA900(DCE) Toshiba, BMSKTOPASA900(DCE) Datasheet - Page 102

• Manufacturer Part Number: BMSKTOPASA900(DCE)
• Description: KIT STARTER TMPA900 USB JTAG
• Manufacturer: Toshiba
• Series: TOPASr
• Type: MCUr

Specifications of BMSKTOPASA900(DCE)

• Contents: Evaluation Board, Cable(s), Software and Documentation
• For Use With/related Products: TMPA900CMXBG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1
2
3
4
DMA Transfer Direction
Memory-to-Peripheral
Peripheral-to-Memory
Memory-to-Memory
Peripheral-to-Peripheral
• DMA Transfer Types
Note 1: Peripheral that can use the single request: UART and LCDDA.
Note 2: Recommendation:
Note 3: DMA request used:
1. Memory-to-peripheral
2. Peripheral-to-Memory
You must program memory-to-memory transfers with a low channel priority (DMAC6,7), otherwise
the other DMA channels cannot access the bus until the memory-to-memory transfer
has finished.
Peripheral
DMAC
Peripheral
Peripheral
DMAC
Source peripheral
Destination
peripheral
DMA Request
Generator
TENTATIVE
DMACBREQ
DMACCLR
DMACBREQ
AMBA Bus
DMACSREQ
DMACCLR
TMPA900CM- 101
Burst request
Burst request/
Single request
(Note 1)
None
Burst request/
Single request
(Note 1)
Burst request
Request
(Note3)
Used
DMA
1: Use bust request in all transactions
2: When the single request, set DMAC busrt to 1
For transactions that are not an integral multiple of the burst
The amount of data left to transfer ≥ Burst size
The amount of data left to transfer < Burst size
Start condition:
When enabled, the DMA channel commences transfers
without DMA requests.
Stop conditions:
All transfer data has finished transfer.
Disable DMAC channel
(Note 2)
Transfer size
1)Integral multiple of
2) Single transfer
3) Not imtegral
size, use both the burst and single request signals.
the burst size
multiple of the
burst size
Peripheral
DMAC
Description
Source side
Burst request
Single request
Burst request
Single request
: Use single transfer
:Use burst transfer
TMPA900CM
Destination side
Burst request
2009-10-14