TDA7513T Datasheet, PDF (28/59 Pages) STMicroelectronics – SINGLE-CHIP FM/AM TUNER WITH STEREO DECODER AND AUDIO PROCESSOR

TDA7513T
5.10.7Write Operation
Following a START condition the master sends a slave address word with the R/W bit set to "0". The de-
vice will generate an "acknowledge" after this first transmission and will wait for a second word (the sub-
address field).
This 8-bit address field provides an access to any of the 64 internal addresses (32 corresponding to the
tuner address and 32 corresponding to the stereo decoder / audio processor address). Upon receipt of the
subaddress the device will respond with an "acknowledge".
At this time, all the following words transmitted to the device will be considered as Data.
The internal address may be automatically incremented if the auto-increment mode is selected (bit S5 of
the subaddress word) .
After each word has been received the device will answer with an "acknowledge".
5.10.8Read Operation
IF the master sends a slave address word with the R/W bit set to "1", the device will transmit one 8-bit data
word.
This data word content changes according to the address corresponding to the tuner or to the stereo de-
coder / audio processor. The information are the following:
– tuner
bit0: ISS filter, 1 = ON, 0 = OFF
bit1: ISS filter bandwidth, 1 = 80kHz, 0 = 120kHz
bit2: MPOUT,1 = multipath present, 0 = no multipath
bit3: 1 = PLL is locked in , 0 = PLL is locked out
bit4: fieldstrength indicator, 1 = lower as softmute threshold, 0 = higher as softmute threshold
bit5: adjacent channel indicator, 1 = adjacent channel present, 0 = no adjacent channel
bit6: deviation indicator, 1 = strong overdeviation present, 0 = no strong overdeviation
bit7: deviation indicator, 1 = overdeviation present, 0 = no overdeviation
– stereo decoder / audio processor
bit2: Soft Mute status, 1 = ON, 0 = OFF
bit3: Stereo mode, 1 = stereo, 0 = mono
Table 28. ISS Modes
MODE 1
sm
ac
0
0
0
1
0
1
1
X
1
0
1
1
ac+
dev
dev+
ISSon
80KHz
0
0
0
0
0
X
0
0
1
1
X
1
X
1
0
X
0
0
1
1
0
1
X
0
0
X
1
X
1
0
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