LV2283VB Datasheet, PDF (8/10 Pages) Sanyo Semicon Device – Bi-CMOS IC FM Transmitter IC with Stereo Modulation

LV2283VB
Continued from preceding page.
Pin No. Pin Name
DC Voltage
(V)
22 76K OSC IN
0.7
23 R-CAP
0
24 R-INPUT
0
See Pin 21
See Pin 1
See Pin 1
Description
See Pin 21
See Pin 21
See Pin 21
Equivalent Circuit
I²C Bus Definition
Table 1. I²C Bus Write Data Format
Name
Address Byte
Control Byte 1
Control Byte 2
Control Byte 3
Control Byte 4
Byte
MSB (1)
1
AD7
AD6
AD5
1
1
0
2
P10
P9
P8
0
1
1
3
P2
P1
P0
1
0
0
4
RES1
RES0
RF2
0
0
1
5
R6
R5
R4
1
0
1
(1) : MSB is transmitted first.
Bit
AD4
AD3
1
0
P7
P6
1
1
19K
ST
0
1
RF1
RF0
1
1
R3
R2
0
0
AD2
0
P5
0
PILOT
1
ATT2
0
R1
0
AD1
0
P4
1
STB
0
ATT1
1
R0
0
LSB
R/W
0
P3
0
MUTE
0
ATT0
1
TEST
0
ACK
A
A
A
A
A
Table 2. I²C Write Mode Description
Bit
AD7 – AD1
R/W
A
P10 – P0
19K
ST
PILOT
STB
MUTE
RES1, RES0
RF2 – RF0
ATT2 – ATT0
R6 – R0
TEST
Name
Address bit
Read/Write
Acknowledge
Programmable counter
19kHz output
MONO/ST selection
Pilot tone output
Standby
Audio mute
Reserved bits
RF output adjustment
Audio attenuator
Reference counter
Test mode
LV2283VB requires address bits.
“0” for Write mode (Write mode only).
Description
11 bit Programmable counter. P0 = LSB, P10 = MSB.
RF Frequency = (P10×2¹⁰ + P9×2⁹ + ... P1×2¹ + P0) × 100kHz
Default state = “01111010100” (980)
19K OUT (Pin 20) ON / OFF. “19K” = “0” for no output. “1” for 19kHz output (same phase as pilot tone).
Default state = “0”
Monaural/Stereo transmission mode selection. “ST” is set “0” for monaural mode (no pilot tone), “1” for
stereo transmission. Default state = “1”
“1” for normal operation (default). “0” for NO pilot tone in composite output even if ST bit = “1” (Stereo
mode).
“1” for standby mode. Default state = “0” for normal operation.
“1” for Audio mute. Default state = “0” for normal operation.
Reserved bits. Default state = “00” for normal operation.
RF output voltage adjustment with 8 degree, 1dB steps. “RF2, RF1, RF0” = “111” for maximum. “000” is
minimum RF output. Default state = “111”
Audio attenuator for FM modulation fine adjustment is set by “ATT2, ATT1, ATT0” with 8 degree,
2dB steps. “111” is for 0dB attenuation. “000” is for 14dB attenuation. Default state = “011”.
7 bit Programmable counter. R0 = LSB, R6 = MSB.
Reference frequency should be set 100kHz.
{Crystal oscillator frequency (Pin 16)} / {(R6×2⁶ + R5×2⁵ ... + R1×2¹ + R0) × 2} = 100kHz.
Default state = “1010000” (80 × 2).
For IC testing. Set “0” for normal operation.
“1” for counter testing mode. Default state = “0”
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