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Hardware
TDM TX
MSC711x
TDM RX
FRAME
CT_D5
CT_D1
TDM TX
CLOCK
MSC711x
CT_D4
CT_D0
CT_F
CT_C8
TDM RX
FRAME
CLOCK
MSC711x
CLOCK
Figure 6. TDM Connections
MSC711x
2.4
JTAG Connector
Connector J10 is a 14-pin 0.100 inch pitch header that provides JTAG debugger access to the board. For
details on the connector signals, refer to the schematics in Appendix A . One JTAG chain on the board
connects all four MSC711x devices and the CPLD. The chain is connected as follows:
3
TDI
TDO
Hardware
CPLD
MSC711x 3
MSC711x 0
MSC711x 2
MSC711x 1
Figure 7 depicts the main components of the SPT711xPFCE board, which are the MSC711x DSP devices,
CPLD, Ethernet switch, I 2 C bus devices, and voltage regulators.
3.1
MSC711x DSPs
The MSC711x family of highly integrated DSPs targets high-bandwidth computationally intensive DSP
applications and is optimized for Enterprise class packet telephony applications. These processors deliver
enhanced performance while maintaining low power dissipation and greatly reducing system cost.
MSC711x Packet Telephony Farm Card (SPT711xPFCE), Rev. 1
8
Freescale Semiconductor
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