SAA7706H/N210,518 NXP Semiconductors, SAA7706H/N210,518 Datasheet - Page 29

• Manufacturer Part Number: SAA7706H/N210,518
• Description: IC CAR RADIO DSP 80-QFP
• Manufacturer: NXP Semiconductors
• Type: Car Signal Processorr

Specifications of SAA7706H/N210,518

• Interface: I²C, I²S, LSB, SPDIF
• Voltage - I/o: 3.30V
• Voltage - Core: 3.30V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Clock Rate: -
• Non-volatile Memory: -
• On-chip Ram: -
• Other names: 935270285518; SAA7706H/N210-T; SAA7706H/N210-T

Philips Semiconductors
8.15.3
The repetition of the RDS data is around the 1187 Hz. This
results in an interrupt on the microcontroller for every
842 s. In a second mode, the RDS interface has a double
16-bit buffer.
8.15.4
The RDS interface buffers 16 data bits. Every time 16 bits
are received, the data line is pulled down and the buffer is
overwritten. The microcontroller has to monitor the data
line in at most every 13.5 ms. This mode can be selected
via an I
2001 Mar 05
handbook, full pagewidth
Car radio Digital Signal Processor (DSP)
2
C-bus.
B
B
RDS_CLOCK
UFFERING OF
UFFER INTERFACE
RDS_DATA
RDS
DATA
t su
Fig.18 RDS timing in the direct output mode.
T cy
29
t HC
In Fig.19 the interface signals from the RDS decoder and
the microcontroller in buffer mode are shown. When the
buffer is filled with 16 bits the data line is pulled down. The
data line will remain LOW until reading of the buffer is
started by pulling down the clock line. The first bit is
clocked out. After 16 clock pulses the reading of the buffer
is ready and the data line is set HIGH until the buffer is
filled again. The microcontroller stops communication by
pulling the line HIGH. The data is written out just after the
clock HIGH-to-LOW transition. The data is valid when the
clock is HIGH. When a new 16-bit buffer is filled before the
other buffer is read, that buffer will be overwritten and the
old data is lost.
t LC
t h
MGU270
Product specification
SAA7706H