Renesas PROM Programming Adapter PCA7408 Manual de usuario Pagina 33

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 112
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 32
M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Rev.1.00 Oct 01, 2002 page 33 of 110
REJ03B0134-0100Z
8.6.2 I
2
C Address Register
The I
2
C address register (address 00D816) consists of a 7-bit slave
address and a read/write bit. In the addressing mode, the slave ad-
dress written in this register is compared with the address data to be
received immediately after the START condition are detected.
(1) Bit 0: read/write bit (RBW)
Not used when comparing addresses, in the 7-bit addressing mode.
In the 10-bit addressing mode, the first address data to be received
is compared with the contents (SAD6 to SAD0 + RBW) of the I
2
C
address register.
The RBW bit is cleared to “0” automatically when the stop condition
is detected.
(2) Bits 1 to 7: slave address (SAD0–SAD6)
These bits store slave addresses. Regardless of the 7-bit address-
ing mode and the 10-bit addressing mode, the address data trans-
mitted from the master is compared with the contents of these bits.
Fig. 8.6.3 I
2
C Address Register
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
0
0
R
ea
d
/wr
i
te
bi
t
(RBW)
1
t
o
7
Sl
ave a
dd
ress
(SAD0 to SAD6)
<
O
n
l
y
i
n
1
0
-
b
i
t
a
d
d
r
e
s
s
i
n
g
(
i
n
s
l
a
v
e
)
m
o
d
e
>
T
h
e
l
a
s
t
s
i
g
n
i
f
i
c
a
n
t
b
i
t
o
f
a
d
d
r
e
s
s
d
a
t
a
i
s
c
o
m
p
a
r
e
d
.
0
:
W
a
i
t
t
h
e
f
i
r
s
t
b
y
t
e
o
f
s
l
a
v
e
a
d
d
r
e
s
s
a
f
t
e
r
S
T
A
R
T
c
o
n
d
i
t
i
o
n
(
r
e
a
d
s
t
a
t
e
)
1
:
W
a
i
t
t
h
e
f
i
r
s
t
b
y
t
e
o
f
s
l
a
v
e
a
d
d
r
e
s
s
a
f
t
e
r
R
E
S
T
A
R
T
c
o
n
d
i
t
i
o
n
(
w
r
i
t
e
s
t
a
t
e
)
<
I
n
b
o
t
h
m
o
d
e
s
>
T
h
e
a
d
d
r
e
s
s
d
a
t
a
i
s
c
o
m
p
a
r
e
d
.
I
2
C
A
d
d
r
e
s
s
R
e
g
i
s
t
e
r
I
2
C address register (S0D) [Address 00D8
16
]
B
N
a
m
e
Function
s
0
0
A
f
t
e
r
r
e
s
e
t
R
W
R—
R
W
Vista de pagina 32
1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 111 112

Comentarios a estos manuales

Sin comentarios