tda6403a NXP Semiconductors, tda6403a Datasheet - Page 8

• Manufacturer Part Number: tda6403a
• Description: 5 V Mixers/oscillators And Synthesizers For Cable Tv And Vcr 2-band Tuners
• Manufacturer: NXP Semiconductors

Philips Semiconductors
I
W
Data bytes can be sent to the device after the address
transmission (first byte). Four data bytes are needed to
fully program the device. The bus transceiver has an
auto-increment facility which permits the programming of
the device within one single transmission
(address + 4 data bytes).
The device 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 3 and 4. The first bit of the first
data byte transmitted indicates whether frequency data
(first bit = 0) or control and band-switch data (first bit = 1)
will follow. Until an I
Table 3 I
Table 4 I
2000 Jan 24
2
Address byte
Divider byte 1
Divider byte 2
Control byte
Band-switch byte
Address byte
Divider byte 1
Divider byte 2
Control byte
Band-switch byte
C-bus mode (SW = GND)
RITE MODE
5 V mixers/oscillators and synthesizers for
cable TV and VCR 2-band tuners
NAME
NAME
2
2
C-bus data format, ‘write’ mode for the TDA6402 and TDA6403
C-bus data format, ‘write’ mode for the TDA6402A and TDA6403A
; R/W = 0 (see Tables 3 and 4)
2
C-bus STOP command is sent by the
BYTE
BYTE
ADB
ADB
DB1
DB2
DB1
DB2
CB
CB
BB
BB
MSB
MSB
N7
N7
X
X
1
0
1
1
0
1
N14
N14
CP
CP
N6
N6
X
X
1
1
N13
N13
N5
N5
T2
T2
X
X
0
0
8
controller, additional data bytes can be entered without the
need to re-address the device. 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 control byte (CB) and the band-switch register
is loaded after the 8th clock pulse of the band switch byte
(BB).
I
The module address contains programmable address bits
(MA1 and MA0) which offer the possibility of having
several synthesizers (up to 4) in one system by applying a
specific voltage on the CE input. The relationship between
MA1 and MA0 and the input voltage applied to the CE
input is given in Table 6.
2
N12
N12
N4
N4
T1
T1
C-
X
X
0
0
BUS ADDRESS SELECTION
BITS
BITS
FMST
PUHF
N11
N11
N3
N3
T0
T0
0
0
PUHF
FMST
MA1
RSA
MA1
RSA
N10
N10
N2
N2
TDA6402; TDA6402A;
TDA6403; TDA6403A
PVHFH
PVHFH
MA0
RSB
MA0
RSB
N9
N1
N9
N1
Product specification
R/W = 0
R/W = 0
PVHFL
PVHFL
LSB
LSB
OS
OS
N8
N0
N8
N0
ACK
ACK
A
A
A
A
A
A
A
A
A
A