AT697F_14 Datasheet, PDF (155/176 Pages) ATMEL Corporation – SPARC V8 High Performance Low-power 32-bit Architecture

PROM
SDCLK
A[27:0]
ROMS*[x]
OE*
WRITE*
READ
D[31:0]
CB[7:0]
Figure 56. Fetch, Read and Write from 32-bit PROM - 0 wait-states
Fetch Instruction 1
Read Data
Fetch Instruction 2
Write Data
t10
Inst 1 Addr
t16
t16
t15
t15
t15
t12
t13
Inst 1
t12
t13
Inst 1
t10
t10
Data R Addr
t16
t16
t16
t15
t15
t15
Inst 2 Addr
t16
t15
t12
t13
Data R
t12
t13
Data R
t12
t13
Inst 2
t12
t13
Inst 2
t10
Data W Addr
t16
t16
t15
t15
t15
t15
t11
t14
Data W
t11
t14
Data W
155 AT697F
7703E–AERO–08/11