HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 530
HD6417712BPV
Manufacturer Part Number
HD6417712BPV
Description
MPU 1.5/3.3V 0K PB-FREE 256-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH Ethernetr
Datasheet
1.HD6417712BPV.pdf
(980 pages)
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
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417712BPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 13 Direct Memory Access Controller (DMAC)
Bus Modes: There are two bus modes: cycle steal and burst. Select the mode in the TB bits of the
channel control register (CHCR).
• Cycle-Steal Mode
Figure 13.9 shows an example of DMA transfer timing in the cycle steal mode. Transfer
conditions shown in the figure are:
1. Dual address mode
2. DREQ low level detection
Rev. 1.00 Dec. 27, 2005 Page 486 of 932
REJ09B0269-0100
In the cycle-steal mode, the bus mastership is given to another bus master after a one-transfer-
unit (byte, word, long-word, or 16 bytes unit) DMA transfer. When another transfer request
occurs, the bus masterships are obtained from the other bus master and a transfer is performed
for one transfer unit. When that transfer ends, the bus mastership is passed to the other bus
master. This is repeated until the transfer end conditions are satisfied.
In the cycle-steal mode, transfer areas are not affected regardless of settings of the transfer
request source, transfer source, and transfer destination.
D31 to D0
D31 to D0
A25 to A0
A25 to A0
Figure 13.8 Example of DMA Transfer Timing in Single Address Mode
DACKn
DACKn
CKIO
CKIO
CSn
CSn
WE
RD
(b) External memory space (ordinary memory) → external device with DACK
(a) External device with DACK → external memory space (ordinary memory)
Address output to external memory space
Select signal to external memory space
Write strobe signal to external memory space
Data output from external device with DACK
DACK signal (active-low) to external device with DACK
Address output to external memory space
Select signal to external memory space
Read strobe signal to external memory space
Data output from external memory space
DACK signal (active-low) to external device with DACK
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