D6417729RHF200BV Renesas Electronics America, D6417729RHF200BV Datasheet - Page 435
D6417729RHF200BV
Manufacturer Part Number
D6417729RHF200BV
Description
IC SUPER H MPU ROMLESS 208QFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.D6417729RF133BV.pdf
(857 pages)
Specifications of D6417729RHF200BV
Core Processor
SH-3 DSP
Core Size
32-Bit
Speed
200MHz
Connectivity
EBI/EMI, FIFO, IrDA, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
96
Program Memory Type
ROMless
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
1.85 V ~ 2.15 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
208-QFP Exposed Pad, 208-eQFP, 208-HQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
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12.3
When there is a DMA transfer request, the DMAC starts the transfer according to the
predetermined channel priority order; when the transfer end conditions are satisfied, it ends the
transfer. Transfers can be requested in three modes: auto-request, external request, and on-chip
module request. The dual address mode has direct address transfer mode and indirect address
transfer mode. Burst mode or cycle-steal mode can be selected as the bus mode.
12.3.1
After the DMA source address register (SAR), DMA destination address register (DAR), DMA
transfer count register (DMATCR), DMA channel control register (CHCR), and DMA operation
register (DMAOR) are set, the DMAC transfers data according to the following procedure:
1. Checks to see if transfer is enabled (DE = 1, DME = 1, TE = 0, NMIF = 0)
2. When a transfer request comes and transfer is enabled, the DMAC transfers 1 transfer unit of
3. When the specified number of transfers have been completed (when DMATCR reaches 0), the
4. When an NMI interrupt is generated, the transfer is aborted. Transfers are also aborted when
Figure 12.2 is a flowchart of this procedure.
data (according to the TS0 and TS1 settings). For an auto-request, the transfer begins
automatically when the DE bit and DME bit are set to 1. The DMATCR value will be
decremented for each transfer. The actual transfer flows vary by address mode and bus mode.
transfer ends normally. If the IE bit in CHCR is set to 1 at this time, a DEI interrupt is sent to
the CPU.
the DE bit in CHCR or the DME bit in DMAOR are changed to 0.
Operation
DMA Transfer Flow
Rev. 5.0, 09/03, page 387 of 806
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