DRX-1
DRX-1
37
5.2 Nucleus 901: Audio User Dealer Loop
A PCM audio sine of 12kHz is generated in the Host
Decoder for a while and sent to the analogue board. The
signal coming from the analogue board is encoded again
and sent to the memory of the host decoder for
comparison. This nucleus tests the components on the
audio signal path:
• Host decoder
• Flex connection between connector 1602 (digital
board) and connector 1900 (analogue board)
• DAC
• Op-amp
• Scart switch IC
• ADC
• Audio Encoder
• VIP
• VSM
NUCLEUS 901: AUDIO USER DEALER LOOP
VIP
STI 5508
VSM
EMPRESS
DIGITAL BOARD
ANALOGUE BOARD
STV6410
DAC
ADC
connector
1900
connector
1900
connector
1602
connector
1602
V
IP
_
IC
L
K
: 2
7
M
H
z
I2S
I2S
7500
7004
7507
7002
7100
7403
7200
7100
Fig. 10
5.3 Nucleus 902: Digital Video Loop
A colourbar generated in the host decoder is looped
through the VIP, Empire, and VSM and checked again in
the host decoder. The following components are tested on
the video signal path:
• VIP
• Empire
• VSM
• Host decoder
NUCLEUS 902: DIGITAL VIDEO LOOP
VIP
STI 5508
VSM
EMPRESS
DIGITAL BOARD
ANALOGUE BOARD
STV6410
VIP_ICLK: 27MHz
7500
7507
7403
7200
7100
Fig. 11
Summary of Contents for DRX-1
Page 99: ...DRX 1 DRX 1 99 TMP93C071 IC7803 ...
Page 100: ...DRX 1 DRX 1 100 STV5348 IC7990 UDA1334TS IC7506 ...
Page 106: ...DRX 1 DRX 1 106 MEMO ...
Page 133: ...A B C D E F G H I J 1 2 3 4 5 6 7 DRX 1 133 PRINTED CIRCUIT BOARD DVIO P C B Part 1 Top View ...
Page 134: ...2 A B C D E F G H I J 1 3 4 5 7 DRX 1 6 134 PRINTED CIRCUIT BOARD DVIO P C B Part 2 Top View ...
Page 192: ...DRX 1 192 DRX 1 ...