PS20230 Datasheet, PDF (7/26 Pages) List of Unclassifed Manufacturers – COFDM demodulator with USB interface for PC-TV

PS20230
2 Pin definitions
Pin
Not connected
1, 2, 67, 68, 70,
71,74,75
76,77,80
2-wire bus
4
Name
CLK1
5 DATA1
27 CLK2
28 DATA2
32
Crystal
59
60
GPP’s
3,8,16,17,18
19,20,23,
AGC
24
25
ADFMT
XTIB
XTO
GPP(7:0)
AGC1
AGC2
Control
42 RFLEV
29 SLEEP
69
Infra-red
62
USB
47
48
46
55
Digital power
pins
34
35
9,11, 13,
26,56.79
15,57,64
6,21,73
7, 10, 12, 14,
22, 33, 58,
61,72,78
RESETB
IRDI
USBP
USBM
RES1K5
RES6K2
PLLVDD
PLLGND
CVDD
CUVDD
IVDD
VSS
Pin description
EEPROM Master 2-wire bus clock
EEPROM Master 2-wire bus data
Tuner Master 2-wire bus clock
Tuner Master 2-wire bus data
EEPROM address format
Low phase noise oscillator cell. A 24
MHz crystal must be used
General Purpose Ports
IF AGC o/p
RF AGC o/p, should be tied to ground
when not used
RF AGC level indicator input
Suspend mode power down for rest of
PCB. High = suspend, low = powered
Active low reset pin
Infra-red input
USB positive data
USB negative data
USB pull up resistor
USB bias resistor
PLL and clocking supply
PLL ground supply
Demodulator core logic power supply
USB core logic power supply
I/O ring power supply
Logic Core and I/O ground
I/O
Note
V
-
-
-
I/O
Open drain
5
Fall time control
I/O
Open drain
5
Fall time control
I/O
Open drain
5
Fall time control
I/O
Open drain
5
Fall time control
I
CMOS
3.3
I
CMOS
I
CMOS
I/O
CMOS Tristate / push- 3.3
pull
O
Open drain
5
O
Open drain
5
I
Analog
O
CMOS
3.3
I
CMOS
5
I
CMOS
3.3
I/O
Differential Analog
I/O
Differential Analog
I/O
3.3
I/O
0
S
1.8
S
0
S
1.8
S
1.8
S
3.3
S
0
mA
-
6
6
6
6
6
6
6
1
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