2.4.2.1Signal Description – ETX Express Connector 1 (CN1A) 2.4.2.1.1 Audio Signals
Signal | Signal Description |
AC_SYNC | 48kHz |
AC_RST# | Reset output to AC97 CODEC, active low. |
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AC_SDIN[0:2] | Serial TDM data inputs from up to 3 CODECs. |
AC_BITCLK | 12.228 MHz serial data clock generated by the external CODEC(s) |
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AC_SDOUT | Serial TDM data output to the CODEC. |
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| Gigabit Ethernet Controller 0: Media Dependent Interface Differential Pairs 0,1,2,3. | |||||||||||||
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| The MDI can operate in 1000, 100 and 10 Mbit / sec modes. Some pairs are | |||||||||||||
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| unused in some modes, per the following: |
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| GBE0_MD[0:3] +/- |
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| MDI[0]+/- |
| B1_DA+/ |
| TX+/- |
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| TX+/- | |||||
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| MDI[1]+/ |
| B1_DB+/ |
| RX+/- |
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| RX+/- | ||||
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| MDI[2]+/ |
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| B1_DC+/ |
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| X |
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| X |
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| MDI[3]+/ |
| B1_DD+/ |
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| GBE0_ACT# | Gigabit Ethernet Controller 0 activity indicator, active low. |
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| GBE0_Link# | Gigabit Ethernet Controller 0 link indicator, active low. |
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| GBE0_Link100# | Gigabit Ethernet Controller 0 100 Mbit / sec link indicator, active low. |
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| GBE0_Lin1000# | Gigabit Ethernet Controller 0 1000 Mbit / sec link indicator, active low. | ||||||||||||||
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Signal | Signal Description |
GPI[0:3] | General purpose input pins. Pulled high internally on the module. |
GPO[0:3] | General purpose output pins. Upon a hardware reset, these outputs will be low. |
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