Circuit-, IC descriptions and list of abbreviations
EN 182 DVDR70 & DVDR75/0x19.
9.5.6 On/Off
The digital board is not powered in standby mode. Control
signal ION, coming from the analog board, will enable the PSU
and power the digital board.
• ION = High: the digital board is in powered down standby
mode
• ION = Low: the power supply to the digital board is enabled
9.5.7 Reset
Control signal IRESET_DIG, controlled by the microprocessor
on the analog board is sent to the RESET LOGIC circuit.
• IRESET_DIG = Low in standby mode
• IRESET_DIG = High: the whole system is reset and the
Digital board is waked up.
9.5.8 I2C Bus
Sti5508 is master of the I2C bus. The following IC's are
controlled by the I2C bus:
• IC7201 NVRAM
• IC7403 EMPRESS
• IC7500 VIP
• IC7700 FLI2200 Video Deinterlacer Line Doubler
• IC7801 ADV7196 Video Denc
9.5.9 EMI Bus
The following IC's are connected to the External Memory
Interface bus (EMI) which functions as system bus:
• IC7301 and 7302: Flash memories which contain the
application and diagnostic software
• IC7100: VSM
• IC7200: MPEG AV Decoder
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