Terasic PCA, Руководство пользователя

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Table 3-5 SW2 Settings (Input Equalizer Configuration for Channel B)
Pin 4 SEL0_B Pin 5 SEL1_B Pin 6 SEL2_B @1.25GHz @2.5GHz
0 0 0 0.5dB 1.2 dB
0 0 1 0.6dB 1.5 dB
0 1 0 1.0 dB 2.6 dB
0 1 1 1.9 dB 4.3 dB
1 0 0 2.8 dB 5.8 dB
1 0 1 3.6 dB 7.1 dB
1 1 0 5.0 dB 9.0 dB
1 1 1 7.7 dB(Default Setting) 12.3 dB(Default Setting)
The SW2 pin 7 connects to the PI2EQX5904 RXD_A pin, while SW2 pin 8 connects to
PI2EQX5904 RXD_B pin. These 2 pins are used to control channel A & B Receiver Detect Enable
function. Automatic Receiver Detection is a feature that can set the number of active channels. By
sensing the presence of a load device on the output, the channel can be automatically enabled to
operate.
When setting the RXD_A or RXD_B to a high level, Automatic Receiver Detection will be enabled.
Please refer the datasheet of PI2EQX5904 for more settings.
Table 3-6 SW2 Settings (Receiver Detect Function Enable for CH_A & CH_B)
Pin 7 RXD_A Pin 8 RXD_B Receiver Detect Function Enable
1 1 CH_A & CH_B Receiver Detect
Enable (Default Setting)
1 0 CH_A Receiver Detect Enable
CH_B Receiver Detect Disable
0 1 CH_A Receiver Detect Disable
CH_B Receiver Detect Enable
0 0 CH_A & CH_B Receiver Detect
Disable
3
3
.
.
4
4
L
L
E
E
D
D
s
s
The PCA includes status LEDs, Please refer Table 3-7 for the status of the LED indicator.
Board
Reference
LED name Description
D1 CBL Cable PRSNT1n