M64895FP Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC
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M64895FP Datasheet PDF : 6 Pages
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PRELIMINARY
Notice:This is not a final specification.
Some parametric limits are subject to change.
MITSUBISHI ICS (TV)
M64895FP/GP
I2C BUS FREQUENCY SYNTHESIZER FOR TV/VCR
TEST MODE DATA SET UP METHOD
Test Mode Bit Set Up
X
: Random, 0 or 1. normal "0"
MA1 ,MA0 : Programmabule Address Bit
Address input voltage
0 to 0.1∗VCC1
Always valid
0.4∗VCC1 to 0.6*VCC1
0.9∗VCC1 to VCC1
MA1
0
0
1
1
MA0
0
1
0
1
N14 to N0 : How to set dividing ratio of the programable the divider
Dividing ratio=N14(214=16384)+ ⋅⋅⋅ +N0(20=1)
Therefore, the range of division N is 1,024 to 32,768
Example) fvco=fREF×8×N
=3.90625×8×N
=31.25×N (kHz)
CP: Setting up the charge pump current of the phase
comparator
CP
Charge pump current
Mode
0
70µA
Test
1
270µA
Normal
TIMING DIAGRAM
START condition
T2,T1,T0 : Setting up for the test mode
T2 T1 T0
00X
01X
110
111
100
101
Charge pump
Normal operation
High impedance
Sink
Source
High impedance
High impedance
Pin 12 condition
Mode
Lock output
Normal operation
Lock output Test mode
Lock output Test mode
Lock output Test mode
fREF output
Test mode
f1/N output
Test mode
RSa, RSb : Set up for the reference frequency division ratio
RSa
RSb
1
1
0
1
X
0
Division ratio
1/512
1/1024
1/640
OS : Set up the tuning amplifier
OS
Tuning voltage output
0
ON
1
OFF
Mode
Normal
Test
Power on reset operation (Initial state the power is turned ON)
BS4 to BS1
: OFF
Charge pump
: High impedance
Tuning amplifier
: OFF
Charge pump current : 270µA
Frequency division ratio : 1/1024
Lock detector
: High
SDA
tBUF
tLOW tr
tf
tHDSTA
SCL
STOP condition
tHDSTA
tHDDAT
tHIGH
tSUDAT
tSUSTA
START condition
CRYSTAL OSCILLATOR CONNECTION DIAGRAM
16
18pF
4MHz
Crystal oscillator characteristics
Actual resistance : less then 300Ω
Load capacitance : 20pF
tSUSTO
STOP condition
5
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