Denon DBP-2012UDCI, Руководство по обслуживанию

Страница: 83 / 92

83
Pin
Port
Name
Assignment Function
I/O Port De fi nition
PU/PD Function Description
I/O Normal OFF
22 P1.2 MCU_IIC_SDA O/I High(3.3V) Hi-Z 4.7K PU SW3.3V
I2C Data signal that comunicate with MT8530.
(Slave mode).
23 P1.1 AC_DET I
High(3.3V)/50Hz
or 60Hz pulse
High(3.3V)/50Hz
or 60Hz pulse
10k PU Detection signal is for AC power.
24 P1.0 Not use - Hi-Z Hi-Z - Not use
25 P0.7 RXD_0 I High(3.3V) High(3.3V) 10k PU
UART receiving terminal is from external RS232
control.
26 P0.6 TXD_0 O High(3.3V) High(3.3V) 10k PU
UART transmission terminal is for external RS232
control.
27 P0.5 KEY_IN_B I High(3.3V) High(3.3V) 10k PU A/D key B input signal is from key board.
28 P0.4 MCU_IR_IN I High(3.3V) High(3.3V) 33k PU IR signal input.Low is to activate the IR receiving.
29 P0.3 KEY_IN_A I High(3.3V) High(3.3V) 10k PU A/D key A input signal is from key board.
30 P0.2 MCU_SET4 I
High(3.3V)
or Low(0V) High(3.3V)
or Low(0V)
10k PU MCU setting pin by externail resistance. Default is high.
31 P0.1 Not use - Hi-Z Hi-Z - Not use
32 P0.0 Standby key I High(3.3V) High(3.3V) 10k PU Power key signal input terminal.Fall-edge is valid.
33 VSS Power - - - - Not use
34 VDD2.5 Power - - - - Internal Regulator Output 2.5V
35 VDD Power - - - - Supply Voltage 3.3V
36 RSTN RSTN I High2.5V) Low(0V) - Reset Low active
37 P2.4 Not use - Hi-Z Hi-Z - Not use
38 P2.5 Not use - Hi-Z Hi-Z - Not use
39 P2.6 Not use - Hi-Z Hi-Z - Not use
40 P2.7 CEC_RS232_SWITCH O Low(0V) High(3.3V) 10k PU
Switch singal is to switch MCU receive the singal of the
HDMI CEC and RS232. High is for MCU to receive the
signal of HDMI CEC and low is for switch those singal
input to MT8530.
41 P3.0 Not use - Hi-Z Hi-Z - Not use
42 P3.1 AMX_POWER O High(3.3V) Hi-Z 10k PD
Power enable is for RS232C circuit power supply. It is
high in power-on and normal standby mode.Low is in
STOP standby mode.
43 P3.2 Not use - Hi-Z Hi-Z - Not use
44 P3.3 Not use - Hi-Z Hi-Z - Not use
Block Diagram
1-CYCLE
8051
CPU CORE
2KB SRAM
FLASH CONTROLLER
32KB
FLASH MEMORY
POWER
MANAGER
LVD/LVR
RESET
IOSC
CLOCK
SELECT
WDT
XOSC RTC INTERRUPT
PORT0/1/2/3/4
UART-0
PCA
ADC
TIMER0/1/2
IO MULTIPLEXER
VDD VSS
RSTN
SPI
UART-1
I2C Master/Slave
I2C Slave
VDD25
CEC ENGINE
PGAs
PORT0 [7:0]
PORT1 [7:0]
PORT2 [7:0]
PORT3 [7:0]
PORT4 [7:0]
IO
MU
LTIPL
E
XER
Analog
Comparators
Analog Switches