TEF6903AH/V5S,557 NXP Semiconductors, TEF6903AH/V5S,557 Datasheet - Page 21

• Manufacturer Part Number: TEF6903AH/V5S,557
• Description: IC CAR RADIO SGL CHIP CIRC 80QFP
• Manufacturer: NXP Semiconductors

Specifications of TEF6903AH/V5S,557

• Modulation Or Protocol: AM, FM, WB
• Applications: AM/FM Radio Receiver
• Current - Receiving: 102mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 8 V ~ 9 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Frequency: -
• Sensitivity: -
• Memory Size: -
• Data Rate - Maximum: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 935288823557

NXP Semiconductors
TEF6902A_3
Product data sheet
8.1.7 Read mode: data byte TEMP
8.2 Write mode
Table 20.
Table 21.
The device is controlled by the I
byte contains the control of the tuning action via the bits MODE[2:0] and subaddressing
via bits SA[4:0] (see
All circuits are controlled by the CONTROL register. Any data change in the CONTROL
register has immediate effect and will change the operation of the circuit accordingly. The
subaddress range 00h to 05h includes data that may lead to audible disturbance when
changed. Therefore the subaddress range 00h to 05h is not loaded in the CONTROL
register directly but loaded in a BUFFER register instead. This allows the IC to take care
of tuning actions and mute control, freeing the microcontroller from cumbersome controls
and timings. The subaddress range of 06h onwards does not contain such critical data.
I
acknowledge of each byte).
Controlled by a state machine the BUFFER data will be loaded in the CONTROL register
for new settings. However at the same time the CONTROL data is loaded in the BUFFER
register. This register swap action allows a fast return to the previous setting because the
previous data remains available in the BUFFER register (see
Figure
Via MODE several operational modes can be selected for the state machine. MODE offers
all standard tuning actions as well as generic control for flexibility. The state machine
controls the tuner directly by controlling the I
counter, mute and weak signal processing are controlled complementary to the tuner
action. The state machine operation starts at the end of transmission (P = STOP). In case
a previous action is still active this is overruled and the new action defined by MODE is
started immediately.
When only the address byte is transmitted no action is started and no setting is changed,
this can be used to test the presence of the device on the bus. To minimize the I
transmission time only bytes that include data changes need to be written. Following the
MSA byte the transmission can start at any given data byte defined by the subaddress
(SA) bits. In case of MODE = preset, search or load the value of buffered data that is not
overwritten by the new transmission will equal the control register content, i.e. the current
tuner state. Instead in case of MODE = buffer, AF update, jump, check or end any not
overwritten BUFFER data remains to be the existing BUFFER register content, i.e. the
previous tuner state.
Bit
7 to 0
2
C-bus information in this range will be loaded in the CONTROL register directly (at
TEMP7
7
12).
TEMP - format of data byte 6
TEMP - data byte 6 bit description
Symbol
TEMP[7:0] on-chip temperature; 1 step
TEMP6
6
Figure
Description
Rev. 03 — 19 March 2008
TEMP5
5
8).
2
C-bus. After the Integrated Circuit (IC) address the MSA
TEMP4
4
2
C-bus data. Internal circuits like the IF
TEMP3
3
1 K; relative indication
TEMP2
2
Figure
TEF6902A
Integrated car radio
10,
TEMP1
© NXP B.V. 2008. All rights reserved.
1
Figure 11
2
TEMP0
C-bus
21 of 106
and
0