MSC711x Application Development System (MSC711xADS) Reference Manual, Rev. 1
46
Freescale Semiconductor
MSC711xADS Interfaces
external filter to transport signals to the media in 100BASE-TX or 10BASE-T Ethernet operations. The magnetic
used is TG110-S050 from Halo Engineering.
Figure 5-8. Ethernet Connection Scheme
5.8 Synchronous DRAM (60x Bus)
To enhance performance, especially in higher operating frequencies, 64 MB of SDRAM are provided on the
MSC711xADS. The SDRAM is unbuffered from the MPC8272 60x bus. Four MT48LC8M16A2 by Micron
memory devices (or compatibles) implement the SDRAM. Each memory device is 2 M
×
16
×
4 banks. The
SDRAM timing is controlled by SDRAM machine 1, which is associated with the 60x bus, via its assigned chip-
select lines. The SDRAM Machine supports page bank interleave (PBI)) which increases the SDRAM throughput.
The SDRAM connection scheme is shown in Figure 5-9
.
RJ45
Magnetic
1:1
MSC711x/
MPC8272
DM9161
RX[3–0]
RXERR
RXEN
RXCLK
RXDV
TX[3–0]
TXERR
TXEN
TXCLK
TXDV
MDC
MDIO
COL
CRS
IRQ12
PORESET
MII RX[3–0]
MII RXERR
MII RXEN
MII RXCLK
MII RXDV
MII TX[3–0]
MII TXERR
MII TXEN
MII TXCLK
MII TXDV
MDC
MDIO
COL
CRS
MII INT
RST
PORESET
RX+
RX–
TX+
TX–