HD6417720BP133BV Renesas Electronics America, HD6417720BP133BV Datasheet - Page 497

• Manufacturer Part Number: HD6417720BP133BV
• Description: SH3-DSP, WITH USB AND LCDC, PB-F
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417720BP133BV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 133MHz
• Connectivity: FIFO, I²C, IrDA, MMC, SCI, SD, SIO, SIM, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 117
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Data Converters: A/D 4x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

SH7720 Group, SH7721 Group
(b)
In single address mode, either the transfer source or transfer destination peripheral device is
accessed (selected) by means of the DACK signal, and the other device is accessed by an address.
In this mode, the DMAC performs one DMA transfer in one bus cycle, accessing one of the
external devices by outputting the DACK transfer request acknowledge signal to it, and at the
same time outputting an address to the other device involved in the transfer. For example, in the
case of transfer between external memory and an external device with DACK shown in figure
10.7, when the external device outputs data to the data bus, that data is written to the external
memory in the same bus cycle.
Two kinds of transfer are possible in single address mode: (1) transfer between an external device
with DACK and a memory-mapped external device, and (2) transfer between an external device
with DACK and external memory. In both cases, only the external request signal (DREQ) is used
for transfer requests.
R01UH0083EJ0400 Rev. 4.00
Sep 21, 2010
Single Address Mode
This LSI
Figure 10.7 Data Flow in Single Address Mode
Data flow
DMAC
External address bus
DACK
DREQ
External data bus
Section 10 Direct Memory Access Controller (DMAC)
External device
with DACK
External
memory
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