PNX1500E/G,557 NXP Semiconductors, PNX1500E/G,557 Datasheet - Page 287
PNX1500E/G,557
Manufacturer Part Number
PNX1500E/G,557
Description
IC MEDIA PROC 240MHZ 456-BGA
Manufacturer
NXP Semiconductors
Specifications of PNX1500E/G,557
Applications
Multimedia
Core Processor
TriMedia
Controller Series
Nexperia
Interface
I²C, 2-Wire Serial
Number Of I /o
61
Voltage - Supply
1.14 V ~ 1.26 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
568-1296
935277746557
PNX1500E/G
935277746557
PNX1500E/G
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PNX15XX_SER_3
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. 3 — 17 March 2006
Actual Sub-carrier Freq.
Programmed Freq.
50%
Chapter 8: General Purpose Input Output Pins
Actual Sub-carrier Freq.
Programmed Freq.
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
66%
PNX15xx Series
8-20
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