M64892GP Просмотр технического описания (PDF) - MITSUBISHI ELECTRIC
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M64892GP Datasheet PDF : 8 Pages
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MITSUBISHI ICS (TV)
M64892AFP/GP
SERIAL INPUT PLL FREQUENCY SYNTHESIZER FOR TV/VCR
(2)Test mode bit set up
X
:Random, 0 or 1. normal “0”
CP
:Set up the charge pump current value
T0, T1, and T2 :Set up test modes
RSa, RSb
:Set up for the reference frequency division ratio
OS
:Set up the tuning amplifier
SI
:1 only (It is prohibit to “0”)
Setting up the charge pump current of the phase comparator
CP
Charge pump current
Mode
0
70µA
Test
1
270µA
Normal
Setting up for the test mode
T2 T1 T0 Charge pump
0 0 X Normal operation
0 1 X High impedance
1 1 0 Sink
1 1 1 Source
1 0 0 High impedance
1 0 1 High impedance
12 pin output
LD
LD
LD
LD
fREF
f1/N
Mode
Normal operation
Test mode
Test mode
Test mode
Test mode
Test mode
∗ Built-in pull up resistor, and the resistor is unnecessary.
Set up for the reference frequency division ratio
RSa
RSb
Frequency ratio
1
1
1/512
0
1
1/1024
X
0
1/640
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 detect
: “H”
TIMING DIAGRAM
tr
ENABLE
10%
90%
1.5V
tINT
tf
VIH
90%
10%
VIL
tINT
tBT
VIH
DATA
1.5V
90%
90%
10%
10%
VIL
tr
tf
VIH
CLOCK
90%
90%
1.5V10%
10%
VIL
tPWC
tr
tf
tSU(D)
tH(D)
tH(E)
tBCL
tSU(E)
CRYSTAL OSCILLATOR CONNECTION DIAGRAM
16
18pF
4MHz
Crystal oscillator characteristics
Actual resistance: less then 300Ω
Load capacitance : 20pF
7
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