HD6417709SF133B Renesas Electronics America, HD6417709SF133B Datasheet - Page 393
HD6417709SF133B
Manufacturer Part Number
HD6417709SF133B
Description
IC SUPERH MPU ROMLESS 208LQFP
Manufacturer
Renesas Electronics America
Series
SuperH® SH7700r
Datasheet
1.D6417709SBP167BV.pdf
(809 pages)
Specifications of HD6417709SF133B
Core Processor
SH-3
Core Size
32-Bit
Speed
133MHz
Connectivity
EBI/EMI, FIFO, IrDA, SCI, SmartCard
Peripherals
DMA, POR, WDT
Number Of I /o
96
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 2.05 V
Data Converters
A/D 8x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 75°C
Package / Case
208-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
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11.3.2
DMA transfer requests are basically generated in either the data transfer source or destination, but
they can also be generated by devices and 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 module request. The request mode is selected in the RS3–RS0 bits of DMA channel
control registers 0–3 (CHCR0–CHCR3).
Auto-Request Mode: When there is 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, the auto-request mode allows the DMAC to automatically generate a
transfer request signal internally. When the DE bit of CHCR0–CHCR3 and the DME bit of
DMAOR are set to 1, the transfer begins so long as the TE bit of CHCR0–CHCR3 and the NMIF
and AE bits of DMAOR are 0.
External Request Mode: In this mode a transfer is performed in response to the request signal
(DREQ) of an external device. Choose one of the modes shown in table 11.3 according to the
application system. When this mode is selected, if DMA transfer is enabled (DE = 1, DME = 1,
TE = 0, AE = 0, NMIF = 0), a transfer is performed upon a request at the DREQ input. Choose
DREQ detection by either a falling edge or low level of the signal input with the DS bit in CHCR0
and CHCR1 (DS = 0 for level detection, DS = 1 for edge detection). The source of the transfer
request does not have to be the data transfer source or destination.
Table 11.3 Selecting External Request Modes with RS Bits
Note: * External memory, memory-mapped external device, on-chip memory, on-chip peripheral
On-Chip Module Request Mode: In this mode a transfer is performed in response to a transfer
request signal (interrupt request signal) of an on-chip module. This mode cannot be set in case of
16-byte transfer. These are six transfer request signals: the receive-data-full interrupts (RXI) and
the transmit-data-empty interrupts (TXI) from two serial communication interfaces (IrDA, SCIF),
the A/D conversion end interrupt (ADI) of the A/D converter, and the compare match timer
interrupt (CMI) of the CMT (table 11.4). When this mode is selected, if DMA transfer is enabled
(DE = 1, DME = 1, TE = 0, AE = 0, NMIF = 0), a transfer is performed upon input of a transfer
RS3
0
module (This applies only to IrDA, SCIF, A/D converter, D/A converter, and I/O ports.)
RS2
0
DMA Transfer Requests
RS1
0
1
RS0
0
0
1
Address Mode
Dual address
mode
Single address
mode
Source
Any *
External memory,
memory-mapped
external device
External device with
DACK
Rev. 5.00, 09/03, page 347 of 760
Destination
Any *
External device
with DACK
External memory,
memory-mapped
external device
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