Philips Semiconductors
Product specification
New In Car Entertainment car radio tuner IC with
Precision Adjacent Channel Suppression (NICE-PACS)
TEA6848H
12.2 I2C-bus protocol
12.2.1 DATA TRANSFER MODE AND IC ADDRESS
Table 2 Write mode
S(1)
address (write)
A(2)
data byte(s)
A(2)
P(3)
Notes
1. S = START condition.
2. A = acknowledge.
3. P = STOP condition.
Table 3 Read mode
S(1)
address (read)
A(2)
data byte 1
Notes
1. S = START condition.
2. A = acknowledge.
Table 4 IC address byte
IC ADDRESS
MODE
1
1
0
0
0
0
0/1(1)
R/W(2)
Notes
1. Defined by address pin FREF:
a) 1 = 1st IC address
b) 0 = 2nd IC address.
2. Read or write mode:
a) 0 = write operation to TEA6848H
b) 1 = read operation from TEA6848H.
12.2.2 WRITE MODE: DATA BYTE 0
Table 5 Format of data byte 0
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
AF
PLL14
PLL13
PLL12
PLL11
PLL10
PLL9
PLL8
Table 6 Description of data byte 0 bits
BIT
SYMBOL
DESCRIPTION
7
AF
Alternative frequency. If AF = 0, then normal operation. If AF = 1, then AF (RDS)
update mode.
6 to 0
PLL[14:8]
Setting of programmable counter of synthesizer PLL. Upper byte of PLL divider
word.
2004 Nov 12
32
NXP [ NXP ]
