LV23000M Datasheet, PDF (5/14 Pages) Sanyo Semicon Device – Single-Chip Tuner IC for Radio/Cassette Players

LV23000M
Description of the DI Control Data
No.
Control block/data
Description
• Specifies the divisor used by the programmable dividers. This is a binary value with P15 as
the MSB. The LSB depends on DVS and SNS.
Programmable
divider data
DVS SNS LSB
1
*
P0
0
1
P0
0
0
P4
Divisor setting (N)
272 to 65535
272 to 65535
4 to 4095
Actual divisor
The actual setting times 2
The actual setting
The actual setting
(1)
Note: When P4 is the LSB, bits P0 to P3 are ignored.
P0 to P15
• Selects the input signal (FMIN or AMIN) to the programmable divider and switches the input
DVS, SNS
frequency range.
(* : don’t care)
DVS
1
0
0
SNS
*
1
0
Input
FMIN
AMIN
AMIN
Operating frequency range
10 to 160 MHz
2 to 40 MHz
0.5 to 10 MHz
Related data
• Data that selects the reference frequency (fref)
Reference divider data
(2)
R0 to R3
R3
R2
R1
R0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
Reference frequency
25 kHz
25 kHz
25 kHz
25 kHz
12.5 kHz
6.25 kHz
3.125 kHz
3.125 kHz
5 kHz
5 kHz
5 kHz
1 kHz
3 kHz
15 kHz
PLL INHIBIT + X'tal OSC STOP
PLL INHIBIT
Note: PLL INHIBIT
• In this state, the programmable divider block and the IF counter block are stopped, FMIN,
AMIN, and IFIN are pulled down (to ground), and the charge pump goes to the high-
impedance state.
IF counter control data
• Measurement start data for the IF counter
CTE = 1: Start the count.
= 0: Reset the counter.
• Determines the measurement time for the general-purpose counter.
(3)
GT0 GT1
Measurement time
Wait time
IFS
CTE
0
0
4 ms
3 to 4 ms
GT0, GT1
0
1
8 ms
3 to 4 ms
1
0
16 ms
3 to 4 ms
1
1
32 ms
3 to 4 ms
Continued on next page.
No. 6903-5/14