D17760BP200AD Renesas Electronics America, D17760BP200AD Datasheet - Page 510
D17760BP200AD
Manufacturer Part Number
D17760BP200AD
Description
IC SUPERH MPU ROMLESS 256-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7750r
Datasheet
1.D6417760BP200ADV.pdf
(1418 pages)
Specifications of D17760BP200AD
Core Processor
SH-4
Core Size
32-Bit
Speed
200MHz
Connectivity
Audio Codec, CAN, EBI/EMI, FIFO, I²C, MFI, MMC, SCI, Serial Sound, SIM, SPI, USB
Peripherals
DMA, LCD, POR, WDT
Number Of I /o
69
Program Memory Type
ROMless
Ram Size
48K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
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Part Number:
D17760BP200AD
Manufacturer:
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Quantity:
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RS3
0
11.4.2
DMA transfer requests are basically generated at either the data transfer source or destination, but
they can also be issued by external devices or on-chip peripheral modules that are neither the
source nor the destination.
Transfers can be requested in three modes: auto-request, external request, and on-chip peripheral
module request. The transfer request mode is selected by bits RS3 to RS0 in CHCR0 to CHCR7
and settings of DMARSRA and DMARSRB.
(1) Auto-Request Mode
The DMAC can automatically generate a transfer request signal internally in Auto-Request Mode
when receiving no transfer request signal from an external source, as in a memory-to-memory
transfer or a transfer between memory and an on-chip peripheral module unable to request a
transfer. Setting the DE bit in CHCR of the channel to be used and the DME bit in DMAOR to 1
starts the transfer. However, the TE bit in CHCR of the channel to be used and the NMIF and AE
bits in DMAOR must all be 0.
(2) External Request Mode
In this mode, the DMAC performs a transfer in response to a transfer request signal (DREQ) from
an external device. Select one of the modes shown in table 11.6 according to the application
system. If DMA transfer is enabled (DE = 1, DME = 1, TE = 0, NMIF = 0, AE = 0), transfer starts
when DREQ is input. The DS bits in CHCR0 to CHCR7 and bits DS3 to DS0 in DMARCR are
used to select either falling edge detection or low level detection of the DREQ signal (level
detection with DS = 0, edge detection with DS = 1).
The source of the transfer request does not have to be the data transfer source or destination.
Table 11.6 Selecting External Request Mode with RS Bits
Rev. 2.00 Feb. 12, 2010 Page 426 of 1330
REJ09B0554-0200
RS2
0
DMA Transfer Requests
RS1
0
1
RS0
0
0
1
Address Mode
Dual address
mode
Single address
mode
Single address
mode
Transfer Source
External memory,
memory-mapped external
device, or on-chip
peripheral module
External memory or
memory-mapped external
device
External device with
DACK
Transfer Destination
External memory,
memory-mapped external
device, or on-chip
peripheral module
External device with
DACK
External memory or
memory-mapped external
device
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