Analog Devices ADSP-21992 EZ-KIT LITE, System Manual, Page: 60 / 87

Jumper Settings
3-16 ADSP-21992 EZ-KIT Lite Evaluation System Manual
Boot Mode and Bypass Mode Select Jumpers
(JP9-JP12)
The ADSP-21992 supports different boot modes, which are controlled by
the three dedicated hardware boot mode control pins (
BMODE2
,
BMODE1
,
and
BMODE0
). These modes can be selected by the configuration of the
three 2-pin jumpers (
JP9-JP11
). The default setting for these three 2-pin
jumpers is open, whereby no boot mode is selected.
The DSP provides a user-programmable (1x to 32x) multiplication of the
input clock, including fractional values, to support 128 external-to-inter-
nal (DSP core) clock ratios. The
BYPASS
pin,
MSEL6-0
, and DF bits in the
PLL configuration register, specify the PLL multiplication factor at reset.
When
JP12
is closed,
BYPASS
mode is selected (default).
SPI EEPROM Enable Jumpers (JP13, JP14)
A socket is available on the ADSP-21992 EZ-KIT Lite board for an 8-pin
SPI Serial EEPROM, such as the Microchip 25LC640, which is used for
booting and/or data storage.
JP13
and
JP14
are used to enable the SPI
EEPROM. It is decoded at SPI slave select 1 via
JP14
.
JP13
is used to
enable/disable the write protection pin of the SPI EEPROM.
DAC Enable Jumpers (JP15, JP16)
JP13
and
JP14
enable the 8-channel, serial, 12-bit DAC on the
ADSP-21992 EZ-KIT Lite board. The DAC is decoded at SPI slave
select 2, via
JP15
.
PF3
is used to update the DAC register via
JP16
.
SPORT/UART Circuitry Jumpers (JP17-JP21)
Jumper
JP17
connects the transmit clock of the Serial port to the receive
clock of the Serial port.