Philips 26FW5220, Service Manual

Page: 101 / 150

Basic Specification
The Micro Controller operates at the following supply voltages:
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+3.3 V_dc at pins 4, 88, 94, and 109.
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+1.8 V_dc at pins 93, 96, and 117.
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I2C pull up supply: +3.3V_dc.
Pin Configuration and Functionality
The ports of the Micro Controller can be configured as follows:
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A normal input port.
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An input ADC port.
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An output Open Drain port.
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An output Push-Pull port.
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An output PWM port.
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Input/Output Port
The following table shows t he ports used for the L04 control:
Table: Micro Controller ports overview
Pin
Name Description Configuration
97 INT0/ P0.5 IR INT0
98 P1.0/ INT1 TV_IRQ INT2
99 P1.1/ T0 TV_SC_COM P1.1
102 P0.4/ I2SWS EXT_MUTE P0.4
103 P0.3/ I2SCLK Lip Sync I2SCLK
104 P0.2/ I2SDO2 NVM_WP P0.2
105 P0.1/ I2SDO1 Lip Sync I2SDO1
106 P0.0/ I2SDI/O Lip Sync I2SDI/O
107 P1.3/ T1 PC-TV_LED P1.3
108 P1.6/ SCL SCL SCL
109 P1.7/ SDA SDA SDA
111 P2.0/ TPWM SOUND_ENABLE P2.0
112 P2.1/ PWM0 (for future use) -
113 P2.2/ PWM1 (for future use) -
114 P2.3/ PWM2 SEL_IF P2.3
115 P3.0/ ADC0 Light Sensor – SDM ADC0
116 P3.1/ ADC1 STATUS_1 ADC1
119 P3.2/ ADC2 STATUS_2 ADC2
120 P3.3/ ADC3 KEYBOARD ADC3
The description of each functional pin is explained below:
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LED. This signal is used as an indication for the Standby, Remote and Error
Indicator. Region diversity:
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During protection mode, the LED blinks and the set is in standby mode.
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During error conditions it blinks at a predefined rate.
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After receiving a valid RC-5 or local keyboard command it flashes once.
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For sets with error message indication, the LED blinks when message is active
and the set is in standby mode.