FM1246/HM/I PHILIPS [NXP Semiconductors], FM1246/HM/I Datasheet - Page 13

• Manufacturer Part Number: FM1246/HM/I
• Description: Desktop video & FM radio module system CCIR I
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Components
APPLICATION INFORMATION
A detailed description of the I
use it’’ . This brochure may be ordered using the code number 9398 393 40011.
WRITE mode
Note
1. A = Acknowledge.
A
V
Note
1. If the AS pin is left floating, the internal bias will automatically set the address to C2.
P
Divider ratio:
For FM radio, f
1997 May 14
Address byte
Program divider byte 1
Program divider byte 2
Control information byte 1
Control information byte 2
DDRESS SELECTION
S
ROGRAMMABLE DIVIDER SETTINGS
N = 16
f
N = (8192
(32
N = (f
Desktop video & FM radio module
system CCIR I
osc
= +5 V (PLL supply voltage).
MA1
=
0
0
1
1
RF
n5) + (16
N
16
+ f
BYTE
(MHz).
f
RF(pc)
IF(fm)
n13) + (4096
IF(fm)
)/step size = (f
+ f
MA0
n4) + (8
= 10.70 MHz
0
1
0
1
IF(pc)
}, where (pc) is picture carrier and f
2
n3) + (4
C-bus specification, with applications, is given in brochure ‘‘The I
n12) + (2048
MSB
P7
n7
RF
ADDRESS
7
1
0
1
(
BYTES
+ f
C0
C2
C4
C6
IF(fm)
n2) + (2
1
n14
CP
P6
n6
)/50 kHz = 20
1
AND
6
n11) + (1024
2)
n1) + n0
n13
T2
P5
n5
5
0
13
(f
RF
n10) + (512
RF
n12
P4
n4
T1
+ f
4
0
and f
IF(fm)
VOLTAGE AT PIN 15 (see note 1)
IF
)
are expressed in MHz.
BITS
n11
T0
P3
n3
3
0
0.0V
0.2V
0.4V
0.9V
n9) + (256
S
S
S
S
to 0.1V
to 0.3V
to 0.6V
to 1.0V
MA1
RSA
n10
P2
n2
2
n8) + (128
S
S
S
S
MA0
RSB
P1
n9
n1
1
Preliminary specification
2
C-bus and how to
n7) + (64
LSB
OS
P0
n8
n0
0
0
FM1246
A
n6) +
A
A
A
A
A
(1)