Datasheet

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6
DP83630 DEMO BOARD USER GUIDE
2.5 Straps
The DP83630 Demo Board provides a combination of jumpers and resistors to configure the
strap options for the device. The following table summarizes the straps and the default settings.
Table 2. Strap Settings
Jumper
Signal Name
IC Pin Name
Function
Default Setting
J23
MII_MODE
RX_DV
MII Mode Select
Open
J29
RMII_MAS
TXD_3
RMII Master Enable
Open
J25
LED_CFG
CRS/CRS_DV
LED Configuration
Open
J32
CLK_OUT_EN
GPIO1
CLK_OUT Enable
Open
J35
PCF_EN
GPIO2
PHY Control Frame Enable
Open
J33
ACT
LED_ACT
Sets Mode in Auto Negotiation
High
J36
SPEED
LED_SPEED
Sets Mode in Auto Negotiation
High
J39
LINK
LED_LINK
Auto-Negotiation Enable
High
R46
FX_EN_Z
RX_ER
Fiber Mode Enable
Open
PHY Address
J24
PHYAD0
COL
PHY Address Bit 0
Open
J26
PHYAD1
RXD_3
PHY Address Bit 1
Open
R47
PHYAD2
RXD_2
PHY Address Bit 2
Open
R49
PHYAD3
RXD_1
PHY Address Bit 3
Open
R50
PHYAD4
RXD_0
PHY Address Bit 4
Open
Refer to the DP83630 datasheet for specific details related to each strap option. The position of
the default strap settings are indicated below for each version of the board.
Figure 5. Default Strap Locations