Can Interface Jumpers (Jp22-Jp23); External Sram Enable Jumpers (Jp24-Jp27); Encoder Interface Jumpers (Jp28-Jp30) - Analog Devices ADSP-21992 EZ-KIT LITE System Manual

Jumpers
JP18-JP21
ADSP-21992 EZ-KIT Lite board.
and enables the required loopback in the UART circuitry.
JP21

CAN Interface Jumpers (JP22-JP23)

A CAN transceiver (
(2-3 position) or disables (1-2 position) the sleep mode on the CAN trans-
ceiver. If no shunt is present, this mode can be defined by external
circuitry. Connectors
bus and allow easy daisy-chaining of CAN devices. CAN bus termination
of 120 ohms is provided by closing jumper

External SRAM Enable Jumpers (JP24-JP27)

A 64K by 16-bit SRAM IC (
Interface (EMI) of the ADSP-21992 EZ-KIT Lite board. External mem-
ory space consists of four memory banks. Memory bank pins
select banks 3-0, respectively.
MS0
, , , or
MS0 MS1 MS2
!
If using external SRAM, close only one of these 2-pin jumpers at
any one time.

Encoder Interface Jumpers (JP28-JP30)

The ADSP-21992 EZ-KIT Lite board allows you to apply differential
encoder signals to the board at the encoder interface connector (EIU),
A differential line receiver IC (
encoder signals to single-ended signals for the EIU inputs of the
ADSP-21992. Three 2-pin jumpers (
this encoder interface circuitry. It is also possible to apply encoder signals
directly to the Encoder Interface of the ADSP-21992 at these jumpers,
when they are open (that is, when no shunt is installed).
ADSP-21992 EZ-KIT Lite Evaluation System Manual
are used to configure the UART circuitry on the
JP18-JP20
) is provided on the CAN interface.
U2
and provide connections to the user's CAN
P12 P13
) is provided on the External Memory
U8
JP24–JP27
.
MS3
) is provided to convert the differential
A8
EZ-KIT Lite Hardware Reference
enable the UART circuitry,
.
JP23
map the external SRAM to
) are provided to enable
JP28–JP30
enables
JP22
through
MS3
.
P6
3-17