TDA935x Philips, TDA935x Datasheet - Page 77

• Manufacturer Part Number: TDA935x
• Description: TV Signal Processor-Teletext Decoder with Embedded u-Controller
• Manufacturer: Philips

Philips Semiconductors
Note
1. Peripheral current is dependent on external components and voltage levels on I/Os
2. The simplified circuit diagram of the oscillator is given in Fig.29.
2001 Jan 18
P0.5
IO.2.1
IO.2.2
IO.2.3
IO.2.4
IO.2.5
IO.2.6
IO.2.7
IO.2.8
IO.2.9
IO.2.10
P1.6
IO.3.1
IO.3.2
IO.3.3
IO.3.4
IO.3.5
IO.3.6
IO.3.7
IO.3.8
Crystal oscillator
OSCIN
X.1.1
X.1.2
X.1.3
X.1.4
X.1.5
NUMBER
TV signal processor-Teletext decoder with
embedded -Controller
A suitable crystal for this oscillator is the Saronix type 9922 520 00169. The nominal tuning of the crystal is important
to obtain a symmetrical catching range for the PLL in the colour decoder. This tuning can be adapted by means of
the values of the capacitors C
however, for a new application the optimum value should be determined by checking the symmetry of the catching
range of the colour decoder.
AND
AND
;
NOTE
P0.6
P1.7
2
low level input voltage
high level input voltage
hysteresis of Schmitt Trigger
input
low level output voltage
high level output voltage
high level output voltage
output rise time (push-pull only)
10% to 90%
output fall time 10% to 90%
load capacitance
capacitance of input pin
low level input voltage
high level input voltage
hysteresis of Schmitt-trigger
input
low level output voltage
high level output voltage
output fall time (V
bus load capacitance
capacitance of IO pin
resonator frequency
input capacitance (C
output capacitance (C
C
R
x1
i
(crystal)
= C
x2
PARAMETER
IH
x1
to V
i
and C
)
o
(V
)
(V
IL
IL
IH
for C
)
x2
)
in Fig.29. Good results were obtained with capacitor values of 39 pF,
L
)
I
open drain
I
load 100 pF
load 100pF
sink current 8mA
open drain
OL
OH
= 8mA
= 8mA
CONDITIONS
77
TDA935X/6X/8X PS/N2 series
2.0
0.4
2.4
3.0
0.2
0
20+0.1
C
10
12
L
MIN.
Tentative Device Specification
16
14
12
4.0
5.0
TYP.
0.8
5.5
0.7
0.4
5.5
100
10
1.5
5.5
0.4
5.5
250
400
10
56
100
MAX.
V
V
V
V
V
V
ns
ns
pF
pF
V
V
V
V
V
ns
pF
pF
MHz
pF
pF
pF
UNIT