Philips Semiconductors
SAA7113H
9-bit video input processor
Pin description
…continued
Pin
40
Type
I
Description
chip enable, Sleep mode with low power consumption if connected to
ground (internal pull-up); internal reset sequence is generated when
released
ground for analog supply voltage channel 2
positive supply voltage for analog channel 2 (3.3 V)
analog input 21
differential analog input for AI21 and AI22; has to be connected to
ground via a capacitor; see application diagram of
Table 3:
Symbol
CE
V
SSA2
V
DDA2
AI21
AI2D
41
42
43
44
P
P
I
I
[1]
[2]
[3]
For board design without boundary scan implementation connect the TRST pin to ground.
This pin provides easy initialization of the Boundary Scan Test (BST) circuit. TRST can be used to force the
Test Access Port (TAP) controller to the TEST_LOGIC_RESET state (normal operation) at once.
In accordance with the
IEEE1149.1
standard the pads TCK, TDI, TMS and TRST are input pads with an
internal pull-up transistor and TDO is a 3-state output pad.
8. Functional description
8.1 Analog input processing
The SAA7113H offers four analog signal inputs, two analog main channels with source
switch, clamp circuit, analog amplifier, anti-alias filter and video 9-bit CMOS ADC
(see
8.2 Analog control circuits
The anti-alias filters are adapted to the line-locked clock frequency via a filter control
circuit. The characteristics are shown in
During the vertical blanking period, gain
and clamping control are frozen.
6
V
0
(dB)
−6
−12
−18
−24
−30
−36
−42
0
2
4
6
8
10
12
mgd138
14
f (MHz)
Fig 3. Anti-alias filter
9397 750 14232
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 9 May 2005
7 of 75
PHILIPS [ NXP SEMICONDUCTORS ]
