Inc1 - Onkyo TX-SR502 Service Manual

IC BLOCK DIAGRAM AND TERMINAL DESCRIPTIONS-12
Q701: CS494003CQZ (Multi-Standard Audio Decoder)-6
TERMINAL DESCRIPTION
SD_DATA0~SD_DATA7, EXTD0~EXTD7 - SDRAM Data Bus, SRAM External Data Bus
SDRAM data bus 7:0. SRAM external data bus 7:0. BIDIRECTIONAL - Default: INPUT
SD_ADDR0~SD_ADDR10, EXTA0~EXTA10 - SDRAM Address Bus, SRAM External Address Bus
SDRAM address bus 10:0. SRAM external address bus 10:0. OUTPUT
SD_CLK_OUT - SDRAM Clock Output
SDRAM clock output. OUTPUT
SD_CLK_IN - SDRAM Re-timing Clock Input
SDRAM re-timing clock input. INPUT
SD_CLK_EN - SDRAM Clock Enable
SDRAM clock enable. OUTPUT
SD_BA, EXTA19 - SDRAM Bank Address Select, SRAM External Address Bus
SDRAM bank address select. SRAM external address bus 19. OUTPUT
SD_CS - SDRAM Chip Select
SDRAM chip select. OUTPUT
SD_RAS - SDRAM Row Address Strobe
SDRAM row address strobe. OUTPUT
SD_CAS - SDRAM Column Address Strobe
SDRAM column address strobe. OUTPUT
SD_WE - SDRAM Write Enable
SDRAM write enable. OUTPUT
SD_DQM1 - SDRAM Data Mask 1
SDRAM data mask 1. OUTPUT
SD_DQM0 - SDRAM Data Mask 2
SDRAM data mask 0. OUTPUT
NV_CS, GPIO14 - SRAM Chip Select, General Purpose I/O
SRAM/FLASH chip select. This pin can act as a general-purpose input or output that can be individually configured and controlled by DSPC.
BIDIRECTIONAL - Default: OUTPUT
NV_OE, GPIO15 - SRAM Output Enable, General Purpose I/O
SRAM/FLASH output enable. This pin can act as a general-purpose input or output that can be individually configured and controlled by DSPC.
BIDIRECTIONAL - Default: OUTPUT
NV_WE, GPIO16 - SRAM Write Enable, General Purpose I/O
SRAM/FLASH write enable. This pin can act as a general-purpose input or output that can be individually configured and controlled by DSPC.
BIDIRECTIONAL - Default: OUTPUT
UHS2, CS_OUT, GPIO17 - Mode Select Bit 2, External Serial Memory Chip Select, General Purpose I/O
DSPC control port mode select bit 2. This pin is sampled at the rising edge of RESET and is one of three pins used to select the control port mode.
In serial control port mode, this pin can serve as an output to provide the chip-select for a serial EEPROM. This pin can act as a general-purpose input
or output that can be individually configured and controlled by DSPC.
BIDIRECTIONAL - Default: INPUT
TX-SR502/E/8250/HT-R520