PNX1502E/G,557 NXP Semiconductors, PNX1502E/G,557 Datasheet - Page 286
PNX1502E/G,557
Manufacturer Part Number
PNX1502E/G,557
Description
IC MEDIA PROC 300MHZ 456-BGA
Manufacturer
NXP Semiconductors
Specifications of PNX1502E/G,557
Applications
Multimedia
Core Processor
TriMedia
Controller Series
Nexperia
Interface
I²C, 2-Wire Serial
Number Of I /o
61
Voltage - Supply
1.23 V ~ 1.37 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
456-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Program Memory Type
-
Ram Size
-
Lead Free Status / Rohs Status
Compliant
Other names
568-1298
935277748557
PNX1502E/G
935277748557
PNX1502E/G
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PNX15XX_PNX952X_SER_N_4
Product data sheet
Figure 11: Examples of Duty Cycles for Ir TX Signals
IROUT
Actual Sub-carrier Freq.
Programmed Freq.
3.2 Spike Filtering
In the 33% and 66% duty-cycle cases FREQ_DIV must be programmed such that the
resulting frequency is 3 times the actual sub-carrier frequency, i.e the minimum pulse
width (high or low) is programmed. Similarly, in the 50% duty-cycle case FREQ_DIV
must be programmed such that the resulting frequency is 2 times the actual sub-
carrier frequency.
33%
When signal sampling at a programmed frequency a filtering feature is available in
the GPIO module which filters out spikes which may occur on a Ir RX signal. This
feature is enabled by programming the EN_IR_FILTER and IR_FILTER registers. The
IR_FILTER value represents the spike filter pulse width, i.e all pulses less than the
IR_FILTER pulse width are considered spikes and not passed through to the signal
monitoring control.
Rev. 4.0 — 03 December 2007
Actual Sub-carrier Freq.
Programmed Freq.
50%
Chapter 8: General Purpose Input Output Pins
PNX15xx/952x Series
Actual Sub-carrier Freq.
Programmed Freq.
66%
© NXP B.V. 2007. All rights reserved.
8-286
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