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Chapter 1: Hardware Description
The two first TDM busses of each serial interface are connected to the four TDM busses of the QuadFALC. The two others TDM busses of each serial interface are used in “pass through mode”. The TDM busses are at a bit rate of 2.048 Mb/s or 8.192 Mb/s.
Bank of ClocksThe PowerQUICC II CPM features a bank of clocks that can be selected independently for each device used. However, the choice for each device is limited. In addition to the ports configuration as clock inputs, it is necessary to configure the clock source of each TDM bus. For all the TDM busses used, the clock is common for receive and transmit directions (configured in the SIxxMR registers).
Table&ORFN | &30,23RUW | 8VDJH |
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&/. | 3& | 7'0D7'0G |
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&/. | 3& | 7'0E7'0F |
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&/. | 3& | 0+]IRU%5* |
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&/. | 3& | 7'0F7'0D |
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&/. | 3& | )DVW(WKHUQHW5[&ORFN |
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&/. | 3& | 7'0G7'0E |
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&/. | 3& | )DVW(WKHUQHW7[&ORFN |
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The Baud Rate Generator receives CLK5 = 25.000 MHz ±20 ppm and provides BRG6 = 12.500 MHz ±20 ppm for the QuadFALC clock input.
Table&ORFN | &30,23RUW | 8VDJH |
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%5* | 3& | 0+]SSPWR4XDG)$/& |
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The FCC3 part of the CPM is used to control an Ethernet 10/100baseT port. An
Ethernet Signal | CPM I/O Port | Dir | Description |
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)(B7;'>@ | 3% | 2 | 7UDQVPLW1LEEOH'DWD |
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)(B5;'>@ | 3% | , | 5HFHLYH1LEEOH'DWD |
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)(B&56 | 3% | , | &DUULHU6HQVH |
4538 Hardware Reference Manual | 11 |