tmp1941af TOSHIBA Semiconductor CORPORATION, tmp1941af Datasheet - Page 141
tmp1941af
Manufacturer Part Number
tmp1941af
Description
32-bit Tx System Risc
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP1941AF.pdf
(354 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
TMP1941AF
Manufacturer:
TOSHIBA
Quantity:
48
Part Number:
tmp1941af(Z)
Manufacturer:
TOSHIBA/东芝
Quantity:
20 000
- Current page: 141 of 354
- Download datasheet (5Mb)
10.4.3
Address Bus
DMA Address Modes
are explicitly addressed.
destination device. In the source read cycle, data is read from the source address and placed in the
DMAC internal Data Holding Register (DHR). Then, in the destination write cycle, the data held in the
DHR is written to the destination address.
transferred from a source device to a destination device in response to a DMA request. The transfer size
can be 32 bits, 16 bits or 8 bits.
source device to a destination device during dual-address mode.
Controller supports either 16-bit or 8-bit bus accesses for external memory. If the DMA transfer size is
programmed to 32 bits in CCRn.TrSiz, DMA read and write cycles each take up to four bus cycles to
complete. A 16-bit data bus, as programmed in the CS/Wait Controller, requires two independent bus
cycles to complete a 32-bit transfer. Likewise, an 8-bit data bus requires four independent bus cycles to
complete a 32-bit transfer.
field in addition to the setting of CCRn.TrSiz. The DPS field defines the port size of a source or
destination I/O peripheral. The I/O port size can be 32 bits, 16 bits or 8 bits.
If the I/O port size is less than the programmed transfer size, the internal 32-bit DHR serves as a buffer
for the data being transferred. For example, assume that the transfer size is programmed to 32 bits. If
the source I/O port size is 8 bits and the destination memory width is 32 bits, then four 8-bit read cycles
occur, followed by a 32-bit write cycle. (If the destination is an external memory with a 16-bit data bus,
Data Bus
The TMP1941AF supports only dual-address mode in which both the source and destination devices
In dual-address mode, two bus transfers occur: a read from a source device and a write to the
The transfer size programmed into the CCRn.TrSiz field determines the amount of data that is
The internal DHR is a 32-bit register that serves as a buffer for the data being transferred from a
Memory accesses occur in a manner to fulfill the CCRn.TrSiz setting. Remember that the CS/Wait
Memory-to-I/O and I/O-to-memory DMA transfers are governed by the setting of the CCRn.DPS
If the transfer size is equal to the I/O port size, an I/O access takes a single read or single write cycle.
Figure 10.12 Dual-Address Transfer Mode
DMAC
Address
TMP1941AF-101
Data
1. Source read
2. Desti. write
1. Source read
2. Desti. write
Destination Device
Source Device
TMP1941AF
2003-03-27
Related parts for tmp1941af
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Toshiba Semiconductor [TOSHIBA IGBT Module Silicon N Channel IGBT]
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
Toshiba Semiconductor [SILICON N CHANNEL 1GBT]
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
Toshiba Semiconductor [GTR Module Silicon N Channel IGBT High Power Switching Applications Motor Control Applications]
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
Toshiba Semiconductor [Power Module]
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA GTR MODULE SILICON NPN TRIPLE DIFFUSED TYPE
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA GTR Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA Intelligent Power Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA INTELLIGENT POWER MODULE SILICON N CHANNEL LGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA IGBT Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA GTR MODULE SILICON N−CHANNEL IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA Intelligent Power Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA GTR Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA INTELLIGENT POWER MODULE
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA Intelligent Power Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet:
Part Number:
Description:
TOSHIBA Intelligent Power Module Silicon N Channel IGBT
Manufacturer:
TOSHIBA Semiconductor CORPORATION
Datasheet: