SH7708 Datasheet, PDF (245/633 Pages) Renesas Technology Corp – SuperH™ RISC engine

Table 10.10 16-Bit External Device/Little Endian Access and Data Alignment
Data Bus
Operation
D31– D23–
D24 D16 D15–D8 D7–D0
Address 0 byte
access
———
Data
7–0
Address 1 byte
access
— — Data —
7–0
Address 2 byte
access
———
Data
7–0
Address 3 byte
access
— — Data —
7–0
Address 0 word
access
— — Data Data
15–8 7–0
Address 2 word
access
— — Data Data
15–8 7–0
Address 0 1st time — — Data Data
longword (address
15–8 7–0
access 0)
2nd time — — Data Data
(address
31–24 23–16
2)
Strobe Signal
WE3, WE2, WE1, WE0,
CASHH, CASHL, CASLH, CASLL,
DQMUU DQMUL DQMLU DQMLL
—
—
—
Asserted
—
—
Asserted —
—
—
—
Asserted
—
—
Asserted —
—
—
Asserted Asserted
—
—
Asserted Asserted
—
—
Asserted Asserted
—
—
Asserted Asserted
227