TEA6845H/V2-T NXP Semiconductors, TEA6845H/V2-T Datasheet - Page 28

• Manufacturer Part Number: TEA6845H/V2-T
• Description: Tuners VDO-NICE
• Manufacturer: NXP Semiconductors

Specifications of TEA6845H/V2-T

• Pin Count: 64
• Screening Level: Industrial
• Package Type: PQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TEA6845H/V2,518

Philips Semiconductors
12 I
12.1
Information about the I
“The I
9398 393 40011).
The standard I
following definitions.
IC addresses:
Structure of the I
increment.
Subaddresses are not used.
12.1.1
Connecting pin f
feeding 50 A into that pin switches the IC into the test
mode.
During test mode the digital-to-analog converters of the
level and antenna DAA functions can be sequenced by the
I
During test mode either the TEA6880H or TEF6890H
reference frequency, the PLL reference frequency divider
or the programmable divider output can be switched to
pin f
12.1.2
Data sequence: address, byte 1, byte 2, byte 3, byte 4,
byte 5, and byte 6. The data transfer has to be in this
order. The LSB = 0 indicates a WRITE operation to the
TEA6845.
Bit 7 of each byte is considered the MSB and has to be
transferred as the first bit of the byte.
The data becomes valid at the output of the internal
latches with the acknowledge of each byte. A STOP
condition after any byte can shorten transmission times.
When writing to the transceiver by using the STOP
condition before completion of the whole transfer:
In byte 5, 4 bits are reserved for test mode purposes.
Those can only be used when the test mode is activated
by the select pin f
2001 Apr 12
2
C-bus SCL line.
1st IC address C2: 1100001
2nd IC address C0: 1100000.
The remaining bytes will contain the old information
If the transfer of a byte is not completed, this byte is lost
and the previous information is available.
New In Car Entertainment (NICE) car radio
ref
2
C-BUS PROTOCOL
2
.
C-bus and how to use it” (order number
I
2
C-bus specification
T
D
EST MODE
ATA TRANSFER FOR THE
2
C-bus specification is expanded by the
ref
2
C-bus logic: slave transceiver with auto
ref.
to V
2
DDA1
C-bus can be found in the brochure
via a 100 k resistor or
TEA6845
28
12.1.3
When the IC is used together with the TEA6880H or
TEF6890H and both SCL and SDA lines are connected via
the I
resistors of the tuner IC should be connected to the digital
supply voltage of the TEA6880H or TEF6890H. Otherwise
an I
supply when the I
or TEF6890H is enabled for data transfer to the tuner IC.
12.1.4
For new frequency setting, in both AM and FM mode, the
programmable divider is enabled by setting bit MUTE =1.
To select an FM frequency, two I
necessary:
First: bit MUTE = 1
Second: bit MUTE = 0.
2
2
C-bus pull-down can occur switching off the tuner IC
C-bus to the TEA6880H or TEF6890H, the pull-up
I
F
2
REQUENCY SETTING
C-bus p
2
TEA6845AH; TEA6845H
C-bus buffer interface of the TEA6880H
ULL
-
UP RESISTORS
2
C-bus transmissions are
Product specification