Sony CXD2701Q Data Book page 142

SONY.
cxdhsoap;aq
(2)
O-RAM
address
setting
D-RAM
address specify
by
the user
is
a
logical
address and
not
a
physical
address.
At the forced
address jump
every
sampling
cycle,
the
ring
address counter
DAC
is
incremented by 6
bit.
The
logical
address addr
modulo added
to
the
ring
address counter
DAC
is
the physical
address
that actually points.
Physical
addr=DAC©addr
What
follows
is
all
about
logical
address
addr,
Absolute address
specify
•
D
H
Id)
—addr
Relative
address
specify
.
ac
|dr©O
a
Iri
-addr
•
addrGX).—
addr
• add
r©D
f
addr
1
12 15
14 13
12
11
10
H
a5 s4
a!i
;i2
al aO
[12 15
14
13
12
11 10
L a5
a4 a3 a2 al
aO
13 12
ii
io
At absolute
expression
0to63
At
complement on
2
expression
-32
to
+31
At
complement on
2 expression
a3 a2 al
aO
-8
to
+7
II 10
At
complement
on
2
expression
al
aO
-2
to
+1
addr©D.-addr
D -
+
l
During
single precision
command,
1
word
of
D
(addr)
is
handled
D
s
--di.-.-'
I
r
d,n-
During double
precision
command.
2
word
(32b)
of
D
(addr)
and
D
(addr
1)
are handled.
D«
=-d»,
h"i
r
:
l,,.,
D
(addr)
is
high
word and
D
(addr
©
32)
is
low word.
When
there
is
no
D-RAM
address specify
command
the
present address remains
unchanged, (addr -> addr)
At the forced
address jump every sampling
cycle, reset
is
executed
to
addr=Q.
Address space between
DRAM
is
ring
shaped.
(63
©
1
->
0,
©
(-1) -»
63)
At
Power ON,
D-RAM
contents are undefined.
!38-