tea5766uk NXP Semiconductors, tea5766uk Datasheet - Page 32

• Manufacturer Part Number: tea5766uk
• Description: Tea5766uk Stereo Fm Radio + Rds
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TEA5766UK_1
Product data sheet
10.2.1 Data transfer to the TEA5766UK
10.2 I
The full I
January 2000.
The I
following definitions:
To speed up RDS traffic it is possible to read all the RDS data and then only write back
byte INTMSK to set the appropriate mask(s) again.
2
Fig 14. I
•
•
•
•
•
C-bus
The chip has two I
– FM radio: 001 0000[R/W] starts at byte 0R or byte 0W
– RDS part: 001 0001[R/W] starts at byte 12R or byte 7W
Structure of the I
– Slave transceiver, subaddresses not used.
– Maximum LOW-level input: V
– Minimum HIGH-level input: V
The data transfer has to be in the order shown in
address indicates a WRITE operation to the TEA5766UK, indicated by the R/W bit of
the I
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 bitwise at the appropriate falling edge of the 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
(1) S = START condition.
(2) A = acknowledge (SDA LOW).
(3) NAK = non acknowledge (SDA HIGH).
(4) P = STOP condition.
2
a. Write mode
b. Read mode
C-bus specification is based on version 2.1, January 2000, expanded by the
cycle will not be started.
S
S
2
2
(1)
(1)
C-bus address.
C-bus specification can be found in The I
2
C-bus data transfer
CHIP ADDRESS (WRITE)
CHIP ADDRESS (READ)
2
C-bus:
2
Rev. 01 — 22 March 2007
C-bus addresses:
IL
IH
= 0.3
= 0.7
A
(2)
V
V
A
VREFDIG
VREFDIG
(2)
2
C-bus specification, version 2.1,
DATA BYTE(S)
Figure
DATA BYTE 1
14. The bit 0 (LSB) = 0 of the
TEA5766UK
Stereo FM radio + RDS
NAK
© NXP B.V. 2007. All rights reserved.
(3)
001aaf456
001aaf457
P
A
(4)
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