12
3. Medium frequency chip U5 TDA9885/TDA9886
TDA9885 and TDA9886 are PHILIPS’ medium frequency processing ICs, both of which support
PAL and NTSC, and TDA9886 is added with the function of supporting SECAM. See details as
follows:
1) Optional video medium frequency of bus control (33.4M, 33.9M, 38M, 38.9M, 45.75M,
58.75M);
2) Read out 4 BIT AFC data through the bus and realize an accurate AFC control;
3) The TOP point in AGC is carried out by the bus;
4) Four optional addresses
5) PLL medium frequency modulator (with external 4M crystal)
Pin
1
2
3
4
5
6
7
8
Meaning VIF1
VIF2
OUT1
FMPLL
DEEM
AFD
D-GND AUD
OUT
Name
Differential
Input1
Differential
Input2
Control Frequency
phase-lock
loop filter
Demodulation
output
stabilized
voltage
capacitor
Audio
Frequency
input
decoupling
Earth
Audio
frequency
output
voltage
Содержание RL-32B02
Страница 9: ...9 II Signal Processing Section MST analog 3 3 Boosting MST digital 3 3...
Страница 23: ...23...
Страница 24: ...24 IV Debugging of Chassis...
Страница 31: ...31 Select the option of System in the Control Pane window...
Страница 32: ...32 Click the System icon and the following window will pop up Select Hardware option...
Страница 33: ...33 Click the Equipment Management button and the following window will pop up...
Страница 34: ...34 Select Port COM and LPT1 Select ECP Printer Port LPT1...
Страница 35: ...35 Click the ECP Printer Port LPT1 and the following window will pop up...
Страница 37: ...37 2 Select the icon of ISP_TOOL4 0 9 3 Double click mouse left key and the following window will pop up...
Страница 47: ...47 The following window will pop up Left single click on Connect button and the following window will pop up...
Страница 49: ...49 When the upgrading is finished the following window will pop up The upgrading is completed by now...
