Mstar Block Diagram; Reset Circuit - Sharp LC-32LE240EV Service Manual

? Bootable SPI interface with serial flash support
? Parallel interface for external NAND flash support
? Power control module with ultra low power MCU available in standby mode
? 380-ball LFBGA package
? Operating Voltages: 1.26V (core), 1.8V (DDR2), 2.5V and 3.3V (I/O and analog)
5.2.

MSTAR Block Diagram

D
E
5.3.

Reset Circuit

Reset circuit using for initiliazing main Mstar IC. Reset condition is high and nomal
working condition is low for RESET pin.
3V3_STBY
F
6. CI INTERFACE
CI Interface Power Switch:
It is used for CI module supply, when Module is inserted (it means CI detect is low) This
circuit is opened or closed by CI_POWER_CTRL port of main uController
USB_DP
USB_DM
LED SOCKET
TP54
1
TP53
1
TP55
1
Q170
BC848B
3
2
1
3
Q174
2
BC858B
1
RESET
R1668
1k
C1015
2
100nF
1
10V
37
1
B3
USB0_DP
A3
USB0_DM
W8
USB1_DP
Y8
USB1_DM
J9
GND0
H9
GND1
TP56
1
TP57
F259
1
1 2
600R
C949
1 2
27pF
50V
Q171
BC848B
3
2
Q173
BC858B
1
5V_STBY
PANEL VCC = 5V/12V
RESET
LC-32LE240
LC-40LE240
5V_STBY
IR_IN
3
2
1
4
3
2
1
CN1
5V_VCC
3V3_VCC
4k7
R1198
2
1
2
3