r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1616

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

32. Electrical Characteristics
Rev.1.00 Jan. 10, 2008 Page 1586 of 1658
REJ09B0261-0100
CLKOUT
RD/FRAME
D31 to D0
CSn
RD/WR
WEn
RDY
BS
DACKn
(DA)
Legend:
IO:
SA:
DA:
Note: DACK is configured as active-high.
DACK device
Single-address DMA transfer
Dual-address DMA transfer
t
WDD
(1) 1st data: One internal wait cycle
t
t
t
DACD
BSD
RWD
Tm1
t
t
t
WED1
Information in the first data bus cycle
D31 to D29: Access size
000:
001:
010:
011:
1xx:
D25 to D0: Address
CSD
FMD
A
t
RDYS
Tmd1w
t
t
t
BSD
FMD
WDD
Figure 32.20 MPX Basic Bus Cycle (Read)
Byte
Word (2 bytes)
Longword (4 bytes)
Quadword (8 bytes)
Burst (32 bytes)
Tmd1
t
t
RDYH
RDS
D0
t
t
DACD
RWD
t
t
CSD
WED1
t
RDH
t
WDD
(2) 1st data: One internal wait + one external wait cycles
t
t
BSD
t
DACD
RWD
Information in the first data bus cycle
D31 to D29: Access size
000:
001:
010:
011:
1xx:
D25 to D0: Address
Tm0
t
t
t
FMD
CSD
WED1
A
t
RDYS
t
BSD
Tmd1w
t
t
FMD
WDD
Byte
Word (2 bytes)
Longword (4 bytes)
Quadword (8 bytes)
Burst (32 bytes)
t
RDYS
Tmd1w
t
RDYH
Tmd1
tRDYH
t
RDS
D0
t
t
RWD
DACD
t
t
CSD
WED1
t
RDH