U6220B Datasheet, PDF (10/14 Pages) TEMIC Semiconductors – 1.3 GHz PLL for TV- and VCR- Tuner

U6220B
3-Wire Bus Description (continued)
Band Switching Logic in 3-Wire Bus Mode
(2-mixer EasyLink with MOSMIC gate 1 switch off logic)
B1 B2 B3 B4 VHF VHF
Pin 6 L/H
Pin 7
UHF
1
0
0
0
on
off
VHF high
0
0
1
0
off
on
VHF low (except channel 6) 0
0
0
1
off
off
VHF channel 6
0
1
0
1
off
off
– Port VHF switches the VHF-MOSMIC (inverse logic)
– Port VHF L/H switches the VHF-switching diode (high output current output)
– Port UHF switches the UHF-MOSMIC (inverse logic)
– Port FM Trap switches the FM Trap in channel 6
– Port MS switches the MX band switch input (e.g. U2326B)
UHF
Pin 8
off
on
on
on
FM
Trap
Pin 10
off
off
off
on
MS
Pin 11
4V
0V
0V
0V
3-Wire Bus Pulse Diagram
4 Bit
14 Bit scaling factor SF
Ports
B1 B2 B3 B4 MSB
LSB
SDA
SCL
AS / ENA
12430
Figure 3.
3-Wire Bus Timing
SDA
LSB
SCL
AS / ENA
TL
Parameter
Setup time
Enable hold time
Clock width
Enable setup time
Enable between two transmissions
Data hold time
TS TC TH TSL
TT
Figure 4.
Symbol
Conditions
Min.
Max.
TS
2
TSL
2
TC
2
TL
10
TT
10
TH
2
12431
Unit
ms
ms
ms
ms
ms
ms
10 (14)
TELEFUNKEN Semiconductors
Preliminary Information
Rev. A2, 23-Sep-96