Dual DP83640 Ethernet PHY HSMC Daughter Board
Reference Guide
V1.0 - October 2013
12
5.2 PHY 2 Strap Options
PHY Address set to 3
Mode set to RMII
Slave
Auto negotiation is enabled for all ports
Automatic cable crossover is enabled for all ports
The optional clk_out clock output of the PHY is enabled
Table 3: PHY 2 Power-Up Strap Options
Strap
Function
Pin
Pin#
Wiring
Value
Setting/Note
PHYAD0
COL
42
nc
1
PHYADDR=3
PHYAD1
RXD_3
43
pull-up
1
PHYAD2..4
RXD_2.._0
44..46 nc
000
AN_EN
LED_LINK
28
nc
1
Autoneg enable
Note: LED must be
wired to VCC
AN1
LED_SPEED
27
nc
1
all modes
AN0
LED_ACT
26
nc
1
CLK_OUT_EN GPIO1
21
pull-up
1
enable clock output
FX_EN_Z
RX_ER
41
nc
1
disable FX mode
LED_CFG
CRS
40
nc
1
mode1
MII_MODE
RX_DV
39
pull-up
1
RMII Mode
PCF_EN
GPIO2
22
nc
0
RMII_MAS
TXD_3
6
nc
0
enable RMII slave
mode
Note:
only pins 43 and 6 are strapped differently from PHY1.