Schematic Page 5 ; Micro Controller - Hitachi 32PD3000E Service Manual

32PD3000 / 42PD3000

Schematic Page 5 ; Micro Controller

IC704 Micro controller ; SDA5550
supply voltage ; +3.3VSTB at pin 8, 40, 75 and 92 and +2.5VSTB at pin 6, 22, 56 and 73
control through I
3 wire bus ; 3WB-clock3v3 at pin 41 and 3WB-data3v3 at pin 46
FC-enable at pin 42
MSC-enable at pin 43
OSD enable at pin 44
control through/by AVlink ; output at pin 16 and input at pin 33
RS232C (19200bps); TxD3v3 at pin 32 and RxD3v3 at pin 38
control by I/R in ; at pin 34
X700 6MHz X'tal
IC700 EEPROM ; M24C16W (16kbits)
supply voltage ; +3.3VSTB at pin 8
control by I2C ; SDA3v3 at pin 5 and SCL3v3 at pin 6 and WC3v3 at pin 7
IC701 Flash memory for software stored ; AT49LV002N (256Kbytes)
supply voltage ; +3.3VSTB at pin 32
control by address and data buses
IC701B option not fitted.
IC703 SRAM ; SMT K6T1008V2E-GB70000 or equivalent (128kbytes)
supply voltage ; +3.3VSTB at pin 32
control by address and data buses
IC705 RESET IC for IC704 ; M62703SL/ML
supply voltage ; +3.3VSTB at pin 1
SCL3v3 and SDA3v3 are converted for 5V operation in Q700/Q701/Q705/Q706
OSD/TEXT RGB at pin 58/59/60 are syncronized with progressive sync pulses 2H(32KHz)
at pin 32 and V(50/60Hz) at pin 33
RGB and BLK are also converted to 5V operation at Q713/Q714/Q715 and IC707
AV link is bi-directional bus from pin 10 of SCART101, made by Q709/D701~D703. For the
micro, input and output are separated.
The signal level is also converted between 3V3 in micro and 5V for SCART.
See "micro pins" for micro controller pin functions.
FRONT PANEL BOARD connection PL702
PIN
PIN NAME
NO.
1 POW LED
2 POWER SAVE
3 STB+5V
4 GND
5 RM-IN
6 A+5V
7 A/D KEY 2
8 A/D KEY 1
9 (BS-LED)
10 (MODEM-LED)
28
2
C ; SDA3v3 at pin 52 and SCL3v3 at pin 47
PL702 IN/OUT
I
I
I
-
O
I
O
O
-
-
at Front Control
FUNCTIONS
Power LED
POWER2
Stand-by 5V power supply
GND
N.C.
+5V
Key in 1
Key in 2
N.C.
N.C.