Ublox IRIS-W10 Series, User Manual

Page: 32 / 43

EVK-IRIS-W10 - User guide
UBX-23007837 - R03 Hardware description Page 32 of 43
C1-Public
Figure 35: PHY circuit strapping options
Configuration Description
PHYAD [2:0] PHY ADDR
00-XXX (00010 DEFAULT)
CONFIG [2:0] IF MODE
001 RMII
101 RMII Back-to-Back (not supported)
xxx Reserved-not used
ISO ISOLATE mode
Pull-up = Enable
Pull-down (default) = Disable
SPEED SPEED mode
SPEED Pull-up (default) = 100Mbps
Pull-down = 10Mbps
DUPLEX DUPLEX mode
Pull-up (default) = Half Duplex
Pull-down = Full Duplex
NWAYEN Nway Auto-Negotiation
Pull-up (default) = Enable
Pull-down = Disable
B_CAST_OFF Broadcast Off - for PHY Address 0
Pull-up = PHY Address 0 set as unique PHY address
Pull-down (default) = PHY Address 0 set as broadcast PHY address
NAND_TREE# NAND Tree Mode
Pull-up (default) = Disable
Pull-down = Enable
Table 20: RMII strap-in
3.10 SDIO 3
SDIO 3 function is not enabled by default on J100 . All SDIO signals shown in Table 21 are
series terminated with 33 Ω resistors for better signal quality, as shown in Figure 36 .
To enable the SDIO 3 function:
•
Invert default connections for J55, J56, J57, J58, J59, J60 , as shown in Figure 37 and
Figure 38.
•
Connect jumper J99
•
Populate capacitors
C71
10 uF,
C72
100 nF
•
Populate TVS DIODE U9 (CDDFN10-0516P)