Texas Instruments MuxIt-EVM Evaluation Module MUXIT-EVM MUXIT-EVM Datenbogen
Produktcode
MUXIT-EVM
Before Operating the EVM
4-2
4.1
Before Operating the EVM
Before operating the MuxIt EVM the user should become familiar with the
schematics, data sheets, and
schematics, data sheets, and
The MuxIt Data Transmission System
Applications, Examples, and Design Guidelines (SLLA093). The user should
locate each connector, test point, and jumper on each board and on each
schematic. Tables 2-1 and 2-2 show the
locate each connector, test point, and jumper on each board and on each
schematic. Tables 2-1 and 2-2 show the
as-shipped configuration of the
jumpers on each board. The user should notice the position of the rocker
switches on the S1 switch for both the serializer and deserializer. The rocker
switch will be set to a multiplier of 20 on both boards as the default.
switches on the S1 switch for both the serializer and deserializer. The rocker
switch will be set to a multiplier of 20 on both boards as the default.
It is suggested that the EVM users first connect the serializer board and
deserializer boards using the adapter header in order to become familiar with
the modes of operation. Connect 3.3 Vdc supply to either A1:J1 or A2:J1. The
remote power jumpers (A1:JMP-11, A1:JMP-12, A2:JMP-2, A2:JMP-3)
should be installed to power both boards. The dc current from the power supply
will be less than 200 mA. Apply a single-ended 10 MHz clock reference (CRI+)
to A1:J3. Ensure A1:JMP-1 is installed to allow operation using a single-ended
clock source.
deserializer boards using the adapter header in order to become familiar with
the modes of operation. Connect 3.3 Vdc supply to either A1:J1 or A2:J1. The
remote power jumpers (A1:JMP-11, A1:JMP-12, A2:JMP-2, A2:JMP-3)
should be installed to power both boards. The dc current from the power supply
will be less than 200 mA. Apply a single-ended 10 MHz clock reference (CRI+)
to A1:J3. Ensure A1:JMP-1 is installed to allow operation using a single-ended
clock source.
Before connecting a pattern generator to the A1:P1, A1:P2, or A1:P3 input
pins, it is suggested that the provided jumper shorts be installed to create
pins, it is suggested that the provided jumper shorts be installed to create
static
input levels. The jumper shorts can be pushed down onto the A1:P1, A1:P2,
or A1:P3 connector pins. The user can install any combination of 1s and 0s on
the input and verify that the output pin on the deserializer board is at the same
logic level as the corresponding input pin on the serializer board.
or A1:P3 connector pins. The user can install any combination of 1s and 0s on
the input and verify that the output pin on the deserializer board is at the same
logic level as the corresponding input pin on the serializer board.
After becoming familiar with the basic operation, the user can try different
multiplier factors, change the various enable/disable jumpers, apply different
input patterns, and change the clock reference frequency and duty cycle. The
user can also remove the adapter header and evaluate performance using
different cables. The pattern generator can be used to provide dynamic input
data into the serializer input connectors, and the deserialize output connectors
may be monitored to see that the outputs are correct.
multiplier factors, change the various enable/disable jumpers, apply different
input patterns, and change the clock reference frequency and duty cycle. The
user can also remove the adapter header and evaluate performance using
different cables. The pattern generator can be used to provide dynamic input
data into the serializer input connectors, and the deserialize output connectors
may be monitored to see that the outputs are correct.
Designers may want to investigate enable/disable response times, and the
EVM has been designed to allow easy access and control of these functions.
The jumpers for enabling devices are 2-pin 0.100
EVM has been designed to allow easy access and control of these functions.
The jumpers for enabling devices are 2-pin 0.100
′′
headers that can be used
to connect test and measurement equipment to the boards in place of the
jumper shorts that are provided. Refer to sections 2.1.3 and 2.2.3 for lists of
the enable jumpers for the serializer and deserializer boards.
jumper shorts that are provided. Refer to sections 2.1.3 and 2.2.3 for lists of
the enable jumpers for the serializer and deserializer boards.
4.2
Basic Operation Using a Single LVDS Data Pair
Basic 10:1 serial operation, shown in Figure 4–1, is set up by setting the
multiplier to 10 on both the serializer and deserializer boards. The rockers M1
through M5 of switch S1 control the multiplier factor pins to the PLL on both
boards. The BS rocker controls the band select input to the PLL on both
boards. As shown in Figure 4–2, the five (5) multiplier pins (M1–M5) are pulled
low internally in the PLL device. Therefore, an OPEN position switch for S1
corresponds to a LOW. Closing a rocker switch connects the pin to VCC and
creates a HIGH. The opposite is true for the BSEL pin, which is connected to
the BS rocker. It is pulled up internally, so the BS rocker in the OPEN position
creates a HIGH B_SEL signal. Refer to either SLLA093 or the SN65LVDS150
datasheet for setting the multiplier and band select inputs.
multiplier to 10 on both the serializer and deserializer boards. The rockers M1
through M5 of switch S1 control the multiplier factor pins to the PLL on both
boards. The BS rocker controls the band select input to the PLL on both
boards. As shown in Figure 4–2, the five (5) multiplier pins (M1–M5) are pulled
low internally in the PLL device. Therefore, an OPEN position switch for S1
corresponds to a LOW. Closing a rocker switch connects the pin to VCC and
creates a HIGH. The opposite is true for the BSEL pin, which is connected to
the BS rocker. It is pulled up internally, so the BS rocker in the OPEN position
creates a HIGH B_SEL signal. Refer to either SLLA093 or the SN65LVDS150
datasheet for setting the multiplier and band select inputs.