HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 526

• Manufacturer Part Number: HD6417712BPV
• Description: MPU 1.5/3.3V 0K PB-FREE 256-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Ethernetr

Specifications of HD6417712BPV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, Ethernet, FIFO, SCI, SIO
• Peripherals: DMA, POR, WDT
• Number Of I /o: 24
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 13 Direct Memory Access Controller (DMAC)
13.4.4
DMA transfer has two types; single address mode transfer and dual address mode transfer, They
depend on the number of bus cycles of access to source and destination. A data transfer timing
depends on the bus mode, which has cycle steal mode and burst mode. The DMAC supports the
transfers shown in table 13.7.
Table 13.7 Supported DMA Transfers
Notes: 1. Dual: Dual address mode
Address Modes:
1. Dual Address Mode
Rev. 1.00 Dec. 27, 2005 Page 482 of 932
REJ09B0269-0100
Source
External device with DACK
External memory
Memory-mapped external
device
On-chip peripheral module
X/Y memory
In the dual address mode, both the transfer source and destination are accessed (selected) by an
address. The source and destination can be located externally or internally.
DMA transfer requires two bus cycles because data is read from the transfer source in a data
read cycle and written to the transfer destination in a data write cycle. At this time, transfer
data is temporarily stored in the DMAC. In the transfer between external memories as shown
in figure 13.5, data is read to the DMAC from one external memory in a data read cycle, and
then that data is written to the other external memory in a write cycle.
2. Single: Single address mode
3. 16-byte transfer is not available for on-chip peripheral modules.
DMA Transfer Types
External
Device with
DACK
Not
available
Single
Single
Not
available
Not
available
External
Memory
Single
Dual
Dual
Dual
Dual
Destination
Memory-
Mapped
External
Device
Single
Dual
Dual
Dual
Dual
On-Chip
Peripheral
Module
Not
available
Dual
Dual
Dual
Dual
X/Y Memory
Not available
Dual
Dual
Dual
Dual