pnx8510 NXP Semiconductors, pnx8510 Datasheet - Page 35

• Manufacturer Part Number: pnx8510
• Description: Analog Companion Chip
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 12612
Product data
7.5 GPIO block
extensive buffering. The format for programming registers in the PNX8510/11 via the
VBI interface can be found in
audio registers are not possible via the VBI interface.
The PNX8510/11 is an I
to address the primary, secondary, audio and remaining control registers. The I
address set can be configured during reset with a pull-up or pull-down combination of
GPIO pins.
Table 23
structure.
Table 23:
Address= GPIO5-GPIO4-XY-GPIO3-GPIO2-GPIO1-R/W
Table 24
Table 24:
A detailed description of all programming registers can be found in
GPIOs are multi-purpose pins. They may be programmed as input/output and used to
carry signals into the IC or to monitor the status of the IC. The selection of these I/O
pins is controlled through programmable registers. The GPIO module can be
programmed via subaddress 90-95 of the primary video pipe.
The GPIO pins operate in two basic modes; Bootstrap mode and GPIO mode. During
chip reset the GPIOs are in bootstrap mode. The status of all GPIO pins is monitored
and used to determine the set of I
After the chip reset is released, the GPIO pins may be used in GPIO mode. In output
mode each GPIO pin can be set to logic one or zero by programming the appropriate
register. In input mode the status of each GPIO can be monitored by reading the
Register Set
VIDEO 1
VIDEO 2
AUDIO 1 / VIDEO 1 and AUDIO 1 clocks
AUDIO 2/ VIDEO 2 and AUDIO 2 clocks
Register Set
VIDEO 1
VIDEO 2
AUDIO 1 / VIDEO 1 and
AUDIO 1 clocks
AUDIO 2/ VIDEO 2 and
AUDIO 2 clocks
shows the register sets and the relationship with the ‘xy’ bits in the address
shows an example of how the I
Relation of ‘xy’ with register sets
I
2
C Address determination
Rev. 04 – 12 January 2004
2
C slave device only. It uses four dedicated slave addresses
Selection Example
IIC address selection example:
GPIO5-2 are set to logic one and GPIO1 is set to zero during the
PNX8510/11rest.
Address = GPIO5-GPIO4-XY-GPIO3-GPIO2-GPIO1-R/W
Address = 1-1-XY-1-1-0-R/W
VIDEO1 = 1-1-0-0-1-1-0-R/W = 0xCC(write), 0xCD(read)
VIDEO2 = 1-1-0-1-1-1-0-R/W = 0xDC (write), 0xDD(read)
AUDIO1 = 1-1-1-0-1-1-0-R/W = 0xEC(write), 0xED(read)
AUDIO2 = 1-1-1-1-1-1-0-R/W = 0xFC(write), 0xFD(read)
Section
2
C device addresses the IC responds to.
7.1.5. Note that reprogramming clocks and
2
C device addresses are determined.
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
PNX8510/11
Analog companion chip
x
0
0
1
1
Section
8.
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y
0
1
0
1
2
C