1999 Jan 13
6
Philips Semiconductors
Product specication
5 V mixer/oscillator-PLL synthesizers for
hyperband tuners
TDA6404; TDA6405;
TDA6405A
Fig.2 Pin configuration for TDA6404.
handbook, halfpage
UHFIN1
UHFIN2
VHFIN
RFGND
IFFIL1
IFFIL2
PVHFL
PVHFH
PUHF
AS
SDA
SCL
ADC
CP
VHFOSCIB2
GND
IFOUT2
IFOUT1
VCC
XTAL
VT
1
2
3
4
5
6
7
8
9
10
11
12
13
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
TDA6404
MGK830
UHFOSCIB1
UHFOSCOC1
UHFOSCOC2
UHFOSCIB2
VHFOSCIB1
VHFOSCOC2
VHFOSCOC1
handbook, halfpage
UHFIN1
UHFIN2
VHFIN
RFGND
IFFIL1
IFFIL2
PVHFL
PVHFH
PUHF
AS
SDA
SCL
ADC
VT
VHFOSCIB2
GND
IFOUT2
IFOUT1
VCC
XTAL
CP
1
2
3
4
5
6
7
8
9
10
11
12
13
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
TDA6405
TDA6405A
MGK831
UHFOSCIB1
UHFOSCOC1
UHFOSCOC2
UHFOSCIB2
VHFOSCIB1
VHFOSCOC2
VHFOSCOC1
Fig.3 Pin configuration for TDA6405(A)
FUNCTIONAL DESCRIPTION
The devices are controlled via the I2C-bus.
For programming, there is one module address (7 bits)
and the R/W bit for selecting the read or write mode.
Write mode
Data bytes can be sent to the devices after the address
transmission (first byte) by setting the R/W bit to logic 0.
Four data bytes are needed to fully program the devices.
The I2C-bus transceiver has an auto-increment facility
which permits the programming of the devices within one
single transmission (address + 4 data bytes).
The devices can also be partially programmed, providing
that the first data byte following the address is divider
byte 1 (DB1) or control byte (CB). The bits in the data
bytes are defined in Tables 1 and 2.
The first bit of the data byte transmitted indicates whether
frequency data (first bit = 0) or control and band switch
data (first bit = 1) will follow. Until an I2C-bus STOP
condition is sent by the controller, additional data bytes
can be entered without the need to re-address the devices.
The frequency register is loaded after the 8th clock pulse
of the second divider byte (DB2). The control register is
loaded after the 8th clock pulse of the CB. The band switch
register is loaded after the 8th clock pulse of the band
switch byte (BB).