ADLINK Express-IBE2 - Manual (Page 18)

Page 18 Express-IBE2
3.3. AB Signal Descriptions
3.3.1. Audio Signals
Signal Pin Description I/O PU/PD Comment
AC_RST# /
HDA_RST# A30 Reset output to CODEC, active low. O 3.3VSB
AC_SYNC /
HDA_SYNC A29 Sample-synchronization signal to the CODEC(s). O 3.3V
AC_BITCLK /
HDA_BITCLK A32 Serial data clock generated by the external
CODEC(s). I/O 3.3V
AC _SDOUT /
HDA_SDOUT A33 Serial TDM data output to the CODEC. O 3.3V
AC _SDIN[2:0]
HDA_SDIN[2:0] B28
B30 Serial TDM data inputs from up to 3 CODECs. I/O 3.3VSB
3.3.2. Analog VGA
Signal Pin Description I/O PU/PD Comment
VGA_RED B89 Red for monitor.
Analog DAC output, designed to drive a
37.5-Ohm equivalent load. O Analog If VGA is used, signal should be
pulled to GND by 150Ω on the
carrier
VGA_GRN B91 Green for monitor
Analog DAC output, designed to drive a
37.5-Ohm equivalent load. O Analog If VGA is used, signal should be
pulled to GND by 150Ω on the
carrier
VGA_BLU B92 Blue for monitor.
Analog DAC output, designed to drive a
37.5-Ohm equivalent load. O Analog If VGA is used, signal should be
pulled to GND by 150Ω on the
carrier
VGA_HSYNC B93 Horizontal sync output to VGA monitor O 3.3V
VGA_VSYNC B94 Vertical sync output to VGA monitor O 3.3V
VGA_I2C_CK B95 DDC clock line (I²C port dedicated to identify
VGA monitor capabilities) I/O OD 3.3V PU 2k2 3.3V
VGA_I2C_DAT B96 DDC data line. I/O OD 3.3V PU 2k2 3.3V