Pioneer PRA-BD11 Service Manual page 11

5
PRA-BD12
CN8601
PH (4P)
+3.3V
+5V Regulator
Block
27MHz Clock
Clock Control
27MHz Clock
Block
Clock Generate
Block
Control
CCIR656 Video
3-wires Audio
CN8602
FFC (30P)
Main Device
Block, IC
Regulator block
Clock control block
Clock generation block
FPGA (IC8611)
Digital audio transmitter
(IC8614)
Embedded audio processor
(IC8613)
Digital video serializer
(IC8617)
5
6
+2.5V
27MHz Clock
36.864MHz Clock
18.432MHz
Clock
CCIR656 Video
3-wires Audio
+3.3V
6.144MHz Clock
+2.5V
IC8611
Control
XC2S50-5PQ208C
FPGA
3-wires Audio
12.288MHz Clock
Generate +3.3V and +2.5V power from +5V power supplied by AVIB
Generate 27MHz and 36.864MHz clocks for video and audio from 27MHz clock supplied by AVIB, and
supply to each IC
Generate 18.432MHz that are a basic clock for RS-232C I/F of FPGA
Work with asynchronization for a audio 36.864MHz clock of the clock control block
Generate 27MHz to use for the simple signal generator function for board check
FPGA Communication with RS-232C for inside status display
Communication control with AVIB
Operation setting of each IC in the board and the LED control for status display
CCIR656 video data control
3-wires audio data control
Sampling frequency 96kHz of audio data convert to 48kHz
Generate 6.144MHz and 12.288MHz clocks for audio (dividing by 36.864MHz clock)
Simple signal generator function for board check (switching by a DIP switch)
Convert 3-wires audio data from the FPGA into AES/EBU data
Superimposing the 3-wires audio data from the FPGA on the CCIR656 video data from the FPGA, and
convert 8-bit to 10-bit.
Convert 10-bit CCIR656 video data from the embedded audio processor to SDI serial data
6
7
+5V
+3.3V
IC8613
CCIR656 Video
GS9023A
(Audio Superimposing)
Embedded
Audio
Processor
+5V
IC8614
AK4103A
Digital Audio
Transmitter
Function
PRA-BD11
7
8
CN8608
BNC
IC8617
Connector
GS7032
SDI Data
Digital Video
SDI OUT
Serializer
CN8609
BNC
Connector
AES/EBU Data
AES/EBU OUT
CN8610
FFC (7P)
RS-232C Control
8
A
B
C
RS-232C
D
E
F
11