COMe-bIP2 / Features and Interfaces
4.16 Shared Graphics Interfaces
On COM Express® pin-out Type 2 based Computer-on-Modules the PCI Express Graphics interface is usually multiplexed
with several digital display interfaces like SDVO, DisplayPort, HDMI or TMDS if supported by the chipset. The new
generation Chief River platform no longer shares it's interfaces. For full backwards compatibility the COMe-bIP2 includes
multi-staged PCIexpress 2.0 switches to provide a shared graphics output on PEG Interface similar to former platforms. It
offers full functionality like auto detection for external Graphics or SDVO devices.
PEG Interface pin-outs
COM Express x16 PCI Express SDVO HDMI & DVI Display Port
Pin Name Pin Name Pin name Description Pin name description pin name description
D52
PEG_TX[0]+ B14 HSOp(0) SDVOB_RED_P Digital Video B red TMDS_B_DATA2_P HDMI Port B Data2 DPB_LANE0_P DisplayPort B
Lane0 output
D53
PEG_TX[0]- B15 HSOn(0) SDVOB_RED_N output differential pair TMDS_B_DATA2_N output differential
pair
DPB_LANE0_N differential pair
D55
PEG_TX[1]+ B19 HSOp(1) SDVOB_GRN_P Digital Video B green TMDS_B_DATA1_P HDMI Port B Data1 DPB_LANE1_P DisplayPort B
Lane1 output
D56
PEG_TX[1]- B20 HSOn(1) SDVOB_GRN_N output differential pair TMDS_B_DATA1_N output differential
pair
DPB_LANE1_N differential pair
D58
PEG_TX[2]+ B23 HSOp(2) SDVOB_BLU_P Digital Video B blue TMDS_B_DATA0_P HDMI Port B Data0 DPB_LANE2_P DisplayPort B
Lane2 output
D59
PEG_TX[2]- B24 HSOn(2) SDVOB_BLU_N output differential pair TMDS_B_DATA0_N output differential
pair
DPB_LANE2_N differential pair
D61
PEG_TX[3]+ B27 HSOp(3) SDVOB_CK_P Digital Video B clock TMDS_B_CLK _P HDMI Port B Clock
output
DPB_LANE3_P DisplayPort B
Lane3 output
D62
PEG_TX[3]- B28 HSOn(3) SDVOB_CK_N differential pair TMDS_B_CLK _N differential pair DPB_LANE3_N differential pair
D65
PEG_TX[4]+ B33 HSOp(4) - - TMDS_C_DATA2_P HDMI Port C Data2
output
DPC_LANE0_P DisplayPort C
Lane0 output
D66
PEG_TX[4]- B34 HSOn(4) - - TMDS_C_DATA2_N differential pair DPC_LANE0_N differential pair
D68
PEG_TX[5]+ B37 HSOp(5) - - TMDS_C_DATA1_P HDMI Port C Data1
output
DPC_LANE1_P DisplayPort C
Lane1 output
D69
PEG_TX[5]- B38 HSOn(5) - - TMDS_C_DATA1_N differential pair DPC_LANE1_N differential pair
D71
PEG_TX[6]+ B41 HSOp(6) - - TMDS_C_DATA0_P HDMI Port C Data0
output
DPC_LANE2_P DisplayPort C
Lane2 output
D72
PEG_TX[6]- B42 HSOn(6) - - TMDS_C_DATA0_N differential pair DPC_LANE2_N differential pair
D74
PEG_TX[7]+ B45 HSOp(7) - - TMDS_C_CLK _P HDMI Port C Clock
output
DPC_LANE3_P DisplayPort C
Lane3 output
D75
PEG_TX[7]- B46 HSOn(7) - - TMDS_C_CLK _N differential pair DPC_LANE3_N differential pair
D78
PEG_TX[8]+ B50 HSOp(8) - - TMDS_D_DATA2_P HDMI Port D Data2
output
DPD_LANE0_P DisplayPort D
Lane0 output
D79
PEG_TX[8]- B51 HSOn(8) - - TMDS_D_DATA2_N differential pair DPD_LANE0_N differential pair
D81
PEG_TX[9]+ B54 HSOp(9) - - TMDS_D_DATA1_P HDMI Port D Data1
output
DPD_LANE1_P DisplayPort D
Lane1 output
D82
PEG_TX[9]- B55 HSOn(9) - - TMDS_D_DATA1_N differential pair DPD_LANE1_N differential pair
D85
PEG_TX[10]+ B58 HSOp(10) - - TMDS_D_DATA0_P HDMI Port D Data0
output
DPD_LANE2_P DisplayPort D
Lane2 output
D86
PEG_TX[10]- B59 HSOn(10) - - TMDS_D_DATA0_N differential pair DPD_LANE2_N differential pair
D88
PEG_TX[11]+ B62 HSOp(11) - - TMDS_D_CLK _P HDMI Port D Clock
output
DPD_LANE3_P DisplayPort D
Lane3 output
D89
PEG_TX[11]- B63 HSOn(11) - - TMDS_D_CLK _N differential pair DPD_LANE3_N -
D91
PEG_TX[12]+ B66 HSOp(12) - - - - - -
D91
PEG_TX[12]- B67 HSOn(12) - - - - - -
D94
PEG_TX[13]+ B70 HSOp(13) - - - - - -
47
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