U6220B Datasheet, PDF (7/14 Pages) TEMIC Semiconductors – 1.3 GHz PLL for TV- and VCR- Tuner

U6220B
I²C Bus Description (continued)
Description
I2C Bus Data Format
MSB
Address byte
1
1
0
0
0 AS1 AS2 0
A
Programmable divider, byte 1
0
n14 n13 n12 n11 n10 n9
n8
A
Programmable divider, byte 2
n7
n6
n5
n4
n3
n2
n1
n0
A
Control byte 1
1
5l
T1 T0
x RD2 Rd1 OS
A
Control byte 2
x
P6
x
P4
x
P2
P1
P0
A
A = Acknowledge, X = not used
n0...n14:
T0, T1:
P0, 1, 2, 4
P6
5I:
OS:
Scaling factor (SF)
SF = 16384 x n14 + 8192 x n13 +...+2 x n1 + n0
Testmode selection
T1 = 1: divider test mode on
T1 = 0: divider test mode off
FPRD at Pin 6/ FRFD at Pin 7
T0 = 1: charge pump disable T0 = 0: charge pump enable
Band switching according logic table page 8
Port output
P6 = 1; open collector active
Charge pump current switch
5l = 1: high current
5l = 0: low current
Output switch
OS = 1: varicap drive disable OS = 0: varicap drive enable
RD1, RD2: Reference divider selection
RD2
RD1
0
0
0
1
1
0
1
1
Reference divider ratio
off
1024
256
512
AS1, AS2: Address selection Pin 3
AS1
AS2
0
1
0
0
1
0
1
1
Address
1
2
3
4
Dec. value
194
192
196
198
Voltage at Pin 3
open
0 to 10% V_S
40 to 60% V_S
90 to 100% V_S
TELEFUNKEN Semiconductors
7 (14)
Rev. A2, 23-Sep-96
Preliminary Information