TEA5764UK-G NXP Semiconductors, TEA5764UK-G Datasheet - Page 33

• Manufacturer Part Number: TEA5764UK-G
• Description: Tuners FM RADIO WITH RDS
• Manufacturer: NXP Semiconductors

Specifications of TEA5764UK-G

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TEA5764UK/N2,027

Philips Semiconductors
Table 11:
TEA5764UK_2
Product data sheet
S
START
Byte 1
chip address
0010 001
I
2
C-bus RDS read mode
11.2 Data transfer
Table 12:
When the TEA5764UK is addressed by the FM radio address, the RDS part (byte12R to
byte27R) can be read in one read action. A read does not have to stop at byte11R.
Therefore, by effectively only using the RDS part of the address, ignores some bytes
which reduces I
Structure of the I
Remark: The I
connect the TEA5764UK to a I
Data transfer to the IC:
Label
S
Byte 1
As
Byte 2, etc.
P
Am
NAm
NA
•
•
•
•
•
•
•
•
R/W ACK byte12R
1
Slave transceiver
Subaddresses not used
Maximum LOW-level input voltage: V
Minimum HIGH-level input voltage: V
Bit 7 of each byte is considered the MSB and has to be transferred as the first bit of
the byte
The LSB indicates the write or read action
The data becomes valid byte-wise at the appropriate falling edge of the SCL clock
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:
– The remaining bytes will contain the old information
– If the transfer of a byte is not completed the new bits will be used, but a new tuning
cycle will not be started
As
I
2
C-bus transfer description
Byte 2
xxxx xxxx
2
2
C-bus operates at a maximum clock rate of 400 kHz. It is not allowed to
C-bus access.
2
C-bus:
Definition
START condition
I
R/W = 0 for write action and R/W = 1 for read action
acknowledge from slave TEA5764UK (SDA is LOW)
data byte (8 bits)
STOP condition
acknowledge from master microcontroller (SDA is LOW)
non acknowledge from master microcontroller (SDA is HIGH)
non acknowledge (SDA is HIGH)
2
C-bus chip address (7 bits)
Rev. 02 — 9 August 2005
Am
ACK .....
2
C-bus operating at a higher clock rate.
Byte n
IL
IH
= 0.3
= 0.7
Am
ACK byte27R
V
V
VREFDIG
VREFDIG
Byte 17
xxxx xxxx
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
TEA5764UK
FM radio + RDS
NAm P
non
ACK
STOP
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