Sony STR-DA6400ES (serv.man4) Service Manual ▷ View online
37
FIELD PROGRAMMABLE GATE ARRAY (FPGA, IC2003) is used
for H.A.T.S. operation. When FPGA (IC2003) boots up by reset signal
from SYSTEM CONTROL (IC2513 27pin), FPGA starts to read the
operation firmware from FLASH MEMORY (IC2004).
from SYSTEM CONTROL (IC2513 27pin), FPGA starts to read the
operation firmware from FLASH MEMORY (IC2004).
The operation clock of FPGA is 22.5792MHz(X2001). 24MHz which is
sampled from SPDIF signal in HDMI signal is input to FPGA (IC2003
22pin) through CLOCK SELECT (IC2005). This 24MHz is used for
adjusting data output timing when H.A.T.S. function is ON
22pin) through CLOCK SELECT (IC2005). This 24MHz is used for
adjusting data output timing when H.A.T.S. function is ON
SDO1-3 signals from DSP2 (IC5202) input to FPGA (IC2003). FPGA
adjusts the signal timing with SD-RAM (IC2002) by 24MHz when
H.A.T.S. function is ON.
H.A.T.S. function is ON.
SD0-3OUT signals from FPGA (IC2003) are sent to LIP SYNC
ADJUST (IC2223). By setting of Menu, LIP SYNC ADJUST (IC2223)
adjusts the output data timing with SD-RAM (IC2224).
adjusts the output data timing with SD-RAM (IC2224).
Digital muting signal outputs from SYSTEM CONTROLLER (IC2513
52pin) or FIELD PROGRAMMABLE GATE ARRAY (IC2003 3pin) to
LIP SYNC ADJUST (IC2223 14pin) through MUTING SW (IC2227)
when the muting is necessary for changing mode, etc.
LIP SYNC ADJUST (IC2223 14pin) through MUTING SW (IC2227)
when the muting is necessary for changing mode, etc.
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Finally, four Digital data signals converts to eight channel Analog data
signals in D/A CONVERTER (IC2218). Eight channels are FL, FR, SL,
SR, SBL, SBR, Center and SW.
SR, SBL, SBR, Center and SW.
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Analog audio signals from D/A CONVERTER (IC2218) are input to
AUDIO INPUT SELECTOR (IC2090). The input sources and output
sources of AUDIO INPUT SELECTER are controlled by SYSTEM
CONTROLLER (IC2513 96pin)
sources of AUDIO INPUT SELECTER are controlled by SYSTEM
CONTROLLER (IC2513 96pin)
Each channel signals passes LINE AMP (IC2290, IC2300, IC2310,
IC2320), ELECTRICAL VOLUME (IC1203, IC1213, IC1223, IC1233)
and LINE AMP (IC1202, IC1212, IC1222, IC1232).
and LINE AMP (IC1202, IC1212, IC1222, IC1232).
Center and SW channel signals are mixed into Front channels with
AUDIO SWITCH (IC2390) and MIX (IC2391) for Center Mix function.
(NOTE) Muting of sound
When press MUTING button, audio sound is muted in ELECTRICAL
VOLUME (IC1203, IC1213, IC1223, IC1233) by DATA signal from
SYSTEM CONTROLLER (IC2513 96pin).
SYSTEM CONTROLLER (IC2513 96pin).
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PREOUT signals of all channels are sent to PREOUT terminals. The
signals are cut by RELAY DRIVE (Q1101, Q1102, Q1103, Q1104).
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