Microchip Technology EVB-LAN9252-DIG-IO User Manual page 16

EVB-LAN9252-DIG-IO EtherCAT® DIG I/O User's Guide
2.4.1.3.1
The EVB-LAN9252-DIG-IO is set to Copper Mode by default. Table 2-4 details the
required strap resistor settings for Copper Mode operation.
TABLE 2-4:
R79 (10K)
R76, R80 (10K)
Note:
Additionally, the signal routing resistors detailed in Table 2-5 must be assembled for
Copper Mode operation.
TABLE 2-5:
R17, R19, R21, R23
R31, R33, R35, R37
Note:
2.4.1.3.2
The EVB-LAN9252-DIG-IO supports SFP type 100BASE-FX. To enabled Fiber Mode,
the respective strap and signal routing registers must be configured.
Note:
Table 2-6 details the required strap resistor settings for Fiber Mode operation.
TABLE 2-6:
R77 (10K)
R75, R78 (10K)
Note:
Additionally, the signal routing resistors detailed in Table 2-7 must be assembled for
Fiber Mode operation.
TABLE 2-7:
R16, R18, R20, R22
R30, R32, R34, R36
Note:
DS50002332A-page 16
Copper Mode
COPPER MODE STRAP RESISTORS
Resistors
Configures Port 0 & 1 to Copper Mode
Configures Port 0 and Port 1 to Copper Mode, respectively
R75, R77, and R78 must not be populated (DNP).
COPPER MODE SIGNAL ROUTING RESISTORS
Resistors
Port 0 Copper Mode enabled
Port 1 Copper mode enabled
R16, R18, R20, R22, R30, R32, R34, and R36 (0402 package) must not be
populated (DNP).
Fiber Mode
Copper Mode related resistors must be DNP while Fiber Mode is active
(See Section 2.4.1.3.1 "Copper Mode").
FIBER MODE STRAP RESISTORS
Resistors
Configures Port 0 & 1 to FX-LOS Mode
Configures Port 0 and Port 1 to Fiber Mode, respectively
R76, R79, and R80 must not be populated (DNP).
FIBER MODE SIGNAL ROUTING RESISTORS
Resistors
Port 0 Fiber Mode enabled
Port 1 Fiber mode enabled
R17, R19, R21, R23, R31, R33, R35, and R37 (0402 package) must not be
populated (DNP).
Preliminary
Description
Description
Description
Description
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