MSC8144ADS Freescale, MSC8144ADS Datasheet - Page 27

• Manufacturer Part Number: MSC8144ADS
• Manufacturer: Freescale

Specifications of MSC8144ADS

• Lead Free Status / RoHS Status: Compliant

5.2 MPC8560 PCI Host Bus
The PCI bus has a width of 32 bits, and connects the MPC8560 host processor with the MSC8144
and the PTMC expansion connector. If you are working with a PCI bus, the host MPC8560 must
be enabled (clear SW2[1] to 0). If the MPC8560 is not enabled, the PCI bus is not functional.
A few notes on working with the PCI bus between the host MPC8560 and the MSC8144:
Note:
The default I/O multiplexing mode is 3, which means that the default boot values are taken from
the MPC8560 via the PCI bus, and that the MSC8144 functions as an agent.
5.3 GETH Interface Switch
The GETH switch is implemented by a Vitesse VSC7380VU GETH Switch. It is an 8-port
Integrated Gigabit Ethernet Switch SoC, configured with an RGMII interface, and working at any
one of three speeds (10/100/1000 Mbps). The switch configures two RGMII ports: One
connected to the host MPC8560 (TSEC2 (MAC1)), and the other connected to the MSC8144
(G2 (MAC0)), both via the SPI bus. Three analog ports are tied to the RJ-45 connectors and the
MSC8144 port G1 through the GETH phy. This interconnection allows exchanging of data
between the host and the MSC8144, and to connect any port out to the LAN. Figure 5-2 shows
the GETH interconnection.
Freescale Semiconductor
„ The MSC8144 can work with a PCI, UTP, or TDM protocols on the PCI bus.
„ If the user has enabled the MSC8144 to work with the PCI protocol, the MPC8560 PCI
„ If the user has enabled the MSC8144 to work with UTP (16-bit) protocol, the MPC8560
„ If the user has enabled the MSC8144 to work with UTP (8-bit), the MPC8560 PCI bus can
„ If the user has enabled any of ports 0–3 in TDM, the MPC8560 PCI bus can also function.
„ If the user has enabled any of ports 4–7 in the TDM bus, the MPC8560 PCI bus cannot
bus must also be enabled.
PCI bus must be disabled.
function in addition to the UTP, but it is not required.
function, and must be disabled.
Failure to disable (or enable) any of the above options prevents correct PCI bus
operation.
MSC8144ADS MSC8144, Rev. 0
MPC8560 PCI Host Bus
5-3