lc7219m Sanyo Semiconductor Corporation, lc7219m Datasheet - Page 7

• Manufacturer Part Number: lc7219m
• Description: Pll Frequency Synthesizers
• Manufacturer: Sanyo Semiconductor Corporation

Serial Bus Data Transfer
The LC7219 and LC7219M can both transfer data in
three different modes-36-bit input data transfer, 24-bit
input data transfer and 28-bit output data transfer. The
transfer mode is selected by the four data bits on DI
immediately prior to CE going HIGH as shown in figure
6 and table 4. These bits are synchronized to the clock
and are latched into the mode register on the rising edge
of CE.
Table 4. Mode selection
Note
Programmable Divider
The configurration of the programmable divider is shown in figure 7. Input mode selection is shown in table 5.
Table 5. Programmable divider selection
Note
When an FM signal is input on FMIN, the actual divider
ratio is double the set ratio. For channel steps of 1, 5 and
9 kHz, a 3.6MHz crystal should be used. The program-
mable divider ratio is determined by the setting of the DV
and SP bits as shown in table 6.
3
2
s
I
e l l
6
4
r e
= don’t care
= don’t care
b -
b -
g
l a i
l a
D
t i
t i
1
0
0
V
d
s
s
r e
r e
a
a t
l a i
l a i
o
d
d
u
a
a
p t
M
a t
a t
t u
o
n i
n i
d
S
e
1
0
p
p
P
t u
t u
n I
p
u
f t
e r
A 3
0
0
0
0
0
1
1
q
0
u
1
5 .
e
0
2
n
o t
o t
o t
y c
1
4
1
a r
6
0
0
A 2
0
0 .
n
0
0
0
0
1
0
1
g
e
(
Figure 7. Programmable divider
M
H
) z
LC7219, 7219M
A 1
0
1
1
0
A 0
1
0
1
0
1
2 /
d
–
–
v i
Table 6. Divider ratio settings
Note
A
a
v
2
n i
g
D
p
D
d i
a
= don’t care
t f
4
e
u
l l
a
a
D
p
r e
u l
r e
n
p r
1
0
0
t u
a t
a t
b
b
V
r e
e
s t i
s t i
o
p
s
s i
c
h t
l a
s
o
a
e
f o
f o
f o
e
p -
w
o
n
c
u
n
r e
p
u
b
h t
h t
o
p t
t o
o r
p r
S
s t i
u -
u
1
0
e
e
t u
P
g
t n
o
b
p
p
c
c
a r
R
s
e
r e
1
o
u
o
o
e
o t
0
m
1 /
n
t
s l
n
n
Figure 6. Transfer mode select
a r
c
v
r t
o t 1 .
r t
6
e
n i
m
D
o
a
l o
l o
n
u
O
u l
s
t i
a
a
R
f s
s l
D
D
D
a i
t n
w
b
n
–
e
d
d
.
r e
b
0
0
4
d
e l
a
a
a
z i l
r e
T
a
a t
a t
o l l
e r
h
1
n
e
d
e
e
1 /
d
v i
. d
w
a
a
h t
n
d
7
e r
e r
e i
r e
h t
a
e
a
b
r r
e
a t
c
c
d
e l
D
o l
o l
t a
P
2
2
e
c
e
5
5
b
v
L
k c
k c
o i
o
4
c s
1
S
6
6
c i
. t i
L
m
2
e
e
e
o t
. e
b
o t
o t
i r
u
b -
d
d
r p
r t
t i
t p
n
4
t I
, s
t i
6
6
n i
n i
s i
o l
t a
o i
0
5
5
c
e
p
9
k c
h t
o i
n
o
o
d
5
5
a
s
o r
6
n
n
v i
3
3
n
e
h t
f
g
5
5
a l
d i
D
D
a
o
a r
e
s l
u
g
r e
. l
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m
p t
. s
n i
o
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t u
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