Sony DVX-11B Service Manual page 27

• IC Pin Function Description
MAIN BOARD IC201 MB90477PFV-G-154-BNDE1 (SYSTEM CONTROLLER)
Pin No. Pin Name
1 MD_ON
2 AV_ON
3 NC
4 BEEP
5 FAN
6 DISCINLED
7 ILL_ON
8 NC
9 VSS
10 to 20 NC
21 VCC
22 to 24 NC
25 RXD
26 TXD
27 to 30 NC
31 EE_CKO
32 EE_SIO
33 AVCC
34 AVRH
35 AVSS
36 KEYIN0
37 KEYIN1
38 KEYIN2
39 TEMP
40 VSS
41 AD_ON
42 to 44 NC
45 KEY_ACK
46 NC
47 to 49 MD0 to MD2
50 to 53 NC
54 BU_IN
55 ACC_IN
56 BUS_SI
57 BUS_SO
58 BUS_CKI
59 BUS_REQ
60 DSP_RST
61 NC
62 SIRCS
63 to 66 NC
I/O
Power supply on/off control signal output for the mechanism deck block and audio/video section
O
"H": power on
O Power supply on/off control signal output for the audio/video section "H": power on Not used
O Not used
O Beep sound drive signal output terminal
O Fan motor drive signal output terminal Not used
O DISC IN LED drive signal output terminal "H": LED on
O Power on/off control signal output terminal for illumination LED "H": LED on
O Not used
— Ground terminal
O Not used
— Power supply terminal (+3.3V)
O Not used
I Receive data input terminal for UART communication when data writing to flash memory
O Transmit data output terminal for UART communication when data writing to flash memory
O Not used
O Serial data transfer clock signal output to the EEPROM Not used
I/O Two-way data bus with the EEPROM Not used
— Power supply terminal (+3.3V)
I Reference voltage (+3.3V) input terminal
— Ground terminal
I Front panel key input terminal (A/D input)
I Key input terminal (A/D input) Not used
I Key input terminal (A/D input) Not used
I Temperature sensor connection terminal (A/D input) Not used
— Ground terminal
A/D converter power control signal output
O When the KEY_ACK pin that controls reference voltage power for key A/D conversion input is
active, "L" is output from this terminal to enable the input
O Not used
Acknowledge signal (wake up signal) input terminal for the key entry Acknowledge signal is
I
input to accept any function key in the standby status On at input of "H"
O Not used
I Setting terminal for the CPU operational mode
O Not used
I Power supply terminal (+3.3V)
I Accessory power detection signal input terminal "L": accessory power on
I Serial data input from the DSP
O Serial data output to the DSP
I Serial data transfer clock signal input from the DSP
O Data transfer request signal output to the DSP
O System reset signal output to the DSP
O Not used
I SIRCS signal input terminal
O Not used
Description
DVX-11B
27