D6417729RHF200BV Renesas Electronics America, D6417729RHF200BV Datasheet - Page 454

• Manufacturer Part Number: D6417729RHF200BV
• Description: IC SUPER H MPU ROMLESS 208QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

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: -

Bus Mode and Channel Priority Order: When, for example, channel 1 is transferring in burst
mode and there is a transfer request to channel 0, which has higher priority, the channel 0 transfer
will begin immediately.
At this time, if the priority is set in the fixed mode (CH0 > CH1), the channel 1 transfer will
continue when the channel 0 transfer has completely finished, even if channel 0 is operating in
cycle-steal mode or burst mode.
If the priority is set in round-robin mode, channel 1 will begin operating again after channel 0
completes the transfer of one transfer unit, even if channel 0 is in cycle-steal mode or burst mode.
The bus will then switch between the two in the order channel 1, channel 0, channel 1, channel 0.
Even if the priority is set in fixed mode or in round-robin mode, the bus will not be given to the
CPU since channel 1 is in burst mode. This example is illustrated in figure 12.16.
Rev. 5.0, 09/03, page 406 of 806
Priority: Round-robin mode
CH0: Cycle-steal mode
CH1: Burst mode
4. The access size permitted when the transfer destination or source is an on-chip
5. If the transfer request is an external request, only channels 0 and 1 are available.
CPU
CPU
peripheral module register.
Figure 12.16 Bus State when Multiple Channels Are Operating
DMAC
CH1
DMAC CH1
Burst mode
DMAC
CH1
DMAC
CH0
CH0
DMAC CH0 and CH1
Round-robin mode in
DMAC
CH1
CH1
DMAC
CH0
CH0
DMAC
CH1
DMAC CH1
Burst mode
DMAC
CH1
CPU
CPU