NXP Semiconductors MPC5777C - External Bus Interface (EBI)

Board Interface Connector
MPC5777C EVB User Guide, Rev. 1
37 NXP Semiconductors
Card has the option to connect with an on-board clock oscillator circuit. For MII-Lite mode, the
clock from the Ethernet Physical (PHY) interface on the Mother Board is available.
Jumper settings for the FEC section are detailed in the Table 21.
Table 215: FEC Interface Jumper
Details
Jumper
Description
Jumper Setting – MII-Lite
Mode
Jumper Setting – RMII
Mode
J26
FEC_TXD2 Selection
2-3: Connect with PM4
(TXD2) from Mother Board
1-2: Connect with PM3
(RXER_MDIXEN) from MB.
J510
FEC Clock Selection
1-2: Connect with Mother
Board
2-3: Connect with On Board
50MHz Oscillator
J524
On Board FEC 50MHz
CLK Enable
1-2: Clock Oscillator in Tri-
state
2-3: Clock Oscillator in
Normal Operation
5.8 External Bus Interface (EBI)
External Bus Interface (EBI) is not available on 416 BGA. It is available only on the 516 BGA.
The EBI is interfaced with Cypress’ 4Mbit SRAM on MPC5777C-516DS Daughter Card as shown
in Figure 27. J4 allows connection of SRAM’s chip select with MCU ship select D_CS0 or
D_CS1.
Table 226 FEC Interface Jumper Details
Jumper
Description
Jumper Setting
J4
SRAM Chip Select
1-2: D_CS0 from MCU
2-3: D_CS1 from MCU*