Avalue ESM-QM77 - Manual (Page 24)

ESM-QM77
24 ESM-QM77 User ’s Manual
2.4.2.1 Signal Description
– COM Express Connector 1 (CN1A)
2.4.2.1.1 Audio Signals
Signal Signal Description
AC/HDA_SYNC HD Audio Sync
AC/HDA _RST# HD Audio Reset
AC/HDA _SDIN[0:2] Audio CODEC Serial Data
AC/HDA _BITCLK HD Audio Clock
AC/HDA _SDOUT HD Audio Data
2.4.2.1.2 Gigabit Ethernet Signals
Signal Signal Description
GBE0_MD[0:3] +/-
Gigabit Ethernet Controller 0: Media Dependent Interface Differential Pairs 0,1,2,3.
The MDI can operate in 1000, 100 and 10 Mbit / sec modes. Some pairs are
unused in some modes, per the following:
1000B-T 100B-T 10B-T
MDI[0]+/- B1_DA+/ TX+/- TX+/-
MDI[1]+/ B1_DB+/ RX+/- RX+/-
MDI[2]+/ B1_DC+/ X X
MDI[3]+/ B1_DD+/ X X
GBE0_ACT# Gigabit Ethernet Controller 0 activity indicator, active low.
GBE0_Link# Gigabit Ethernet Controller 0 link indicator, active low.
GBE0_Link100# Gigabit Ethernet Controller 0 100 Mbit / sec link indicator, active low.
GBE0_Lin1000# Gigabit Ethernet Controller 0 1000 Mbit / sec link indicator, active low.
2.4.2.1.3 GPIO Signals
Signal Signal Description
GPI[0:4] General purpose input pins.
GPO[0:4] General purpose output pins.