Onkyo TX-SR804, Service Manual

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TX-SR804/804E
IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS -7
Q201: CS494003 (DSP)
SD_ADDR10, EXTA10: SDRAM address bus output. SRAM external address output.
SD_BA, EXTA19: SDRAM bank address select, SRAM external address bus 19.
VDDSD1: 3.3V SDRAM / SRAM / EPROM Interface supply
VSSSD1: 3.3V SDRAM / SRAM / EPROM Interface ground.
SD_CS: SDRAM Chip select
SD_ADDR4, EXTA4: SDRAM address bus output. SRAM external address output.
SD_ADDR5, EXTA5: SDRAM address bus output. SRAM external address output.
SD_ADDR6, EXTA6: SDRAM address bus output. SRAM external address output.
SD_CLK_EN: SDRAM clock enable output.
SD_ADDR7, EXTA7: SDRAM address bus output. SRAM external address output.
SD_ADDR8, EXTA8: SDRAM address bus output. SRAM external address output.
SD_CLK_IN: SDRAM re-timing clock input.
SD_ADDR9, EXTA9: SDRAM address bus output. SRAM external address output.
SD_CLK_OUT: SDRAM clock output.
VDDSD2: 3.3V SDRAM / SRAM / EPROM Interface supply
VSSSD2: 3.3V SDRAM / SRAM / EPROM Interface ground.
SD_DATA8, EXTA11: SDRAM data bus output, SRAM external address bus output
SD_DATA9, EXTA12: SDRAM data bus output, SRAM external address bus output
SD_DATA10, EXTA13: SDRAM data bus output, SRAM external address bus output
SD_DATA11, EXTA14: SDRAM data bus output, SRAM external address bus output
SD_DATA12, EXTA15: SDRAM data bus output, SRAM external address bus output
VDDSD3: 3.3V SDRAM / SRAM / EPROM Interface supply
VSSSD3: 3.3V SDRAM / SRAM / EPROM Interface ground.
SD_DATA13, EXTA16: SDRAM data bus output, SRAM external address bus output
HDATA6, GPIO6: DSPC Bidirectional Data Bus, General Purpose I/O
HDATA7, GPIO7: DSPC Bidirectional Data Bus, General Purpose I/O
AUDATA5, GPIO29: PCM digital-audio data output 5, General Purpose I/O
AUDATA6, GPIO30: PCM digital-audio data output 6, General Purpose I/O
AUDATA7, XMT958B, GPIO31: PCM digital-audio data output 7, S/PDIF Transmitter, General Purpose I/O
VSS1: 2.5V ground
VDD1: 2.5V supply voltage.
NC1: No connect. Connect to ground.
NC2: No connect. Connect to ground.
LRCLK1: Audio Output Sample Rata Clock
SCLKN, GPIO22: PCM Audio Input Bit Clock, General Purpose I/O
LRCLKN, GPIO23: PCM Audio Input Sample Rate Clock, General Purpose I/O
NC3: No connect. Connect to ground.
NC4: No connect. Connect to ground.
SDATAN0, GPIO24: Digital-audio PCM data input. General purpose I/O
SDATAN1, GPIO25: Digital-audio PCM data input. General purpose I/O
SDATAN2, GPIO26: Digital-audio PCM data input. General purpose I/O
SDATAN3, GPIO27: Digital-audio PCM data input. General purpose I/O
SD_CAS: DRAM column address strobe output.
SD_RAS: SDRAM row address strobe output.
SD_ADDR3, EXTA3: SDRAM address bus output. SRAM external address output.
SD_ADDR2, EXTA2: SDRAM address bus output. SRAM external address output.
SD_ADDR1, EXTA1: SDRAM address bus output. SRAM external address output.
SD_ADDR0, EXTA0: SDRAM address bus output. SRAM external address output.
TERMINAL NAME/DESCRIPTION
TERMINAL DESCRIPTION (2/3)