Harman Kardon AVR240 Service Manual page 112

AVR240
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
UHS0, GPIO18 — Mode Select Bit 0, General Purpose I/O
DSPC control port mode select bit 0. This pin is sampled at the rising edge of RESET and is
one of three pins used to select the control port mode. This pin can act as a general-purpose
input or output that can be individually configured and controlled by DSPC.
BIDIRECTIONAL - Default: INPUT
UHS1, GPIO19 — Mode Select Bit 1, General Purpose I/O
DSPC control port mode select bit 1. This pin is sampled at the rising edge of RESET and is
one of three pins used to select the control port mode. This pin can act as a general-purpose
input or output that can be individually configured and controlled by DSPC.
BIDIRECTIONAL - Default: INPUT
GPIO20 — General Purpose I/O
This pin can act as a general-purpose input or output that can be individually configured and
controlled by DSPC. This pin has an internal pull-up.
BIDIRECTIONAL - Default: INPUT
GPIO21 — General Purpose I/O
This pin can act as a general-purpose input or output that can be individually configured and
controlled by DSPC.This pin has an internal pull-up.
BIDIRECTIONAL - Default: INPUT
VDD[7:1] — 2.5V Supply Voltage
2.5V supply voltage.
VSS — 2.5V Ground
2.5V ground.
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