Jumpers
2-20
ADSP-21479 EZ-Board Evaluation System Manual
Flash WP Jumper (JP1)
The flash WP jumper (
JP1
) write-protects block 0 of the parallel flash
chip. Block 0 is located at address range
0x0400 0000–0x0400 1FFF
. The
POST begins at block 0 and continues on to other blocks in flash mem-
ory. When the jumper is installed on
JP1
, and the parallel flash driver
from Analog Devices is used, block 0 is read-only. By default,
JP1
is not
installed.
S/PDIF Loopback Jumper (JP2)
The S/PDIF loop back jumper (
JP2
) is used for internal testing only. The
jumper loops back any digital audio signal from the S/PDIF’s
Data Out
pin to the S/PDIF’s
Data In
pin. By default,
JP2
is not installed.
UART RTS/CTS Jumper (JP3)
The UART RTS/CTS jumper (
JP3
) connects the
RTS
and
CTS
pins of the
RS-232 interface. By default,
JP3
is installed.
UART Loopback Jumper (JP4)
The UART loop back jumper (
JP4
) is used for internal testing only. The
jumper loops back UART receive data from UART transmit data. By
default,
JP4
is not installed.
DSP Audio Oscillator Jumper (JP5)
The processor audio oscillator jumper (
JP5)
connects a 24.576 MHz
oscillator to the
DAI_P17
pin of the processor. The jumper can be used to
make the processor the master and the AD1939 device—the slave. By
default,
JP5
is not installed, resulting in the AD1939 being the master,
and the processor being the slave.
