SAA7115HLBE NXP Semiconductors, SAA7115HLBE Datasheet - Page 251
![Video ICs ADV DGTL VIDEO DECODR](/photos/27/77/277797/qfp100_sml.jpg)
SAA7115HLBE
Manufacturer Part Number
SAA7115HLBE
Description
Video ICs ADV DGTL VIDEO DECODR
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7115HLBE.pdf
(548 pages)
Specifications of SAA7115HLBE
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 70 C
Package / Case
SOT-407
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Number Of Channels
2
Resolution
8 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
SAA7115HL/V1,557 SAF7115HLBE
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Philips Semiconductors
16.5
I
ware I
case, the SCL and SDA pins are fully controlled and ob-
served by software, and the hardware I
disconnected from the SCL and SDA pins. Refer to
Figure 16-3
Software mode is by default disabled after boot. Soft-
ware
IIC_CR.SW_MODE_EN. At that point, the SCL and SDA
pins can be controlled by the IIC_CR SDA_OUT and
SCL_OUT bits. Writing a ‘1’ to either bit causes the cor-
responding pin to become active, i.e. be pulled low. The
SDA and SCL lines are open-collector outputs, and can
hence also be pulled low by external devices. The actual
pin state can be observed by software by examining
IIC_SR SDA_STAT and SCL_STAT bits. A 1 in these
MMIO bits indicates that the corresponding pin is cur-
rently pulled low.
By appropriate software, possibly using a timer interrupt,
full I
mechanism.
2
Figure 16-3. I
C software operation mode is intended for use by soft-
2
C functionality can be implemented using this
2
C or similar algorithm implementations. In this
mode
I
hardware
2
I2C
C SOFTWARE OPERATION MODE
for a clarification of the principles involved.
2
C software mode only logic
is
enabled
HIWAY
by
DATA
writing
2
C interface is
a
‘1’
scl_out
sda_out
sda_stat
scl_stat
D Q
D Q
tribuf
tribuf
to
sw_mode_en
sw_mode_en
16.6
Hardware operation of I
The PNX1300 I
two modes:
1. Master-transmitter (to write data to a slave)
2. Master-receiver (to read data from a slave)
As a master, the I
pulses and the START and STOP bus conditions. The
START and STOP bus conditions are shown in
Figure
or a repeated START condition. Since a repeated
START condition is also the beginning of the next serial
transfer, the I
Note: The I
master ONLY!
The number of bytes transferred between the START
and STOP conditions from transmitter to receiver is not
limited. Each 8-bit data byte is followed by one acknowl-
edge bit. The transmitter releases the SDA line which will
pull-up to a HIGH level during the acknowledge bit time.
The receiver acknowledges by pulling the data line LOW
during this acknowledge period. The master must always
generate the SCL transitions for the acknowledge bit
time.
PRELIMINARY SPECIFICATION
16-4. A transfer is ended with a STOP condition
I
2
C HARDWARE OPERATION MODE
open drain
open drain
2
C interface on PNX1300 will operate as a
2
C bus will not be released.
buf
buf
2
C hardware interface operates in one of
2
C logic will generate all the serial clock
2
C is the default mode after boot.
SCL
SDA
I2C Interface
16-5
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