Bo
a
rd
-t
o
-Bo
a
rd
C
o
n
n
e
ct
o
r
DP83867IRPAPT
ETH_RESET
BB_ETH_MDIO
BB_ETH_MDC
BB_ETH_RX_ER
BB_ETH_RX_CLK
BB_ETH_RX_DV
BB_ETH_GTX_CLK
BB_ETH_TX_CLK
BB_ETH_TX_EN
BB_ETH_RX_D0:7
BB_ETH_TX_D0:7
2.5 V
1.1 V
3.3 V
25 MHz
Et
h
e
rn
e
t
C
o
n
n
e
ct
o
r
ETHER_D0:3P/N
XI
XO
Copyright © 2016, Texas Instruments Incorporated
Ethernet Interface
56
SPRUIC7 – December 2016
Copyright © 2016, Texas Instruments Incorporated
CSK Carrier Card Interface
7.5
Ethernet Interface
The CSK Carrier card supports GMII and MII interfaces (see
). The DP83867 is a robust, low
power, fully featured, physical-layer transceiver with integrated PMD sub-layers to support 10BASE-Te,
100BASE-TX, and 1000BASE-T Ethernet protocols. Optimized for ESD protection, the DP83867 exceeds
the 8-kV IEC 61000-4-2 (direct contact) standard. This device interfaces directly to the MAC layer through
the IEEE 802.3 MII standard, the IEEE 802.3 GMII standard, or reduced GMII (RGMII).
The DP83867 Ethernet PHY can be configured for GMII (TMDSCSK388 and TMDSCSK8127) or MII
(TMDSCSK369) through register configuration. The PHY address of DP83867 is 0x19(h).
Figure 7-5. Ethernet Interface