Renesas R5S72621 Manual Do Utilizador
Section 25 NAND Flash Memory Controller
Page 1290 of 2108
R01UH0134EJ0400 Rev. 4.00
Sep
24,
2014
SH7262 Group, SH7264 Group
Figure 25.1 shows a block diagram.
Peripheral bus
Interrupt requests
(4 lines)
(4 lines)
Control signal
DMA transfer
requests (2 lines)
requests (2 lines)
Direct
memory
access
controller
memory
access
controller
Peripheral bus interface
32
32
Registers
State
machine
Transmit/
receive
control
3-symbol
ECC
Flash memory
interface
NAND
Flash memory
FIFO
256 bytes
Interrupt
controller
controller
Bus state
controller
controller
32
8
8
8
32
32
4-symbol
ECC
Clock
pulse
generator
pulse
generator
×1/2
×1/4
FCLK
QTSEL
Bus mastership
request
acknowledge
request
acknowledge
NAND
flash memory
controller
flash memory
controller
Bus mastership
request
request
Note: FCLK is the operating clock for flash memory interface signals.
The division ratio is specified by register FLCMNCR.
The division ratio is specified by register FLCMNCR.
Peripheral
clock
clock
Figure 25.1 Block Diagram