|
Label |
Description |
Pin Number |
Expansion Slot / Hole |
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|
INPUT |
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Max_Sel |
Selects maximum volume level |
28 |
Push Button 1 |
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|
Min_Sel |
Selects minimum volume level |
29 |
Push Button 2 |
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|
Incr |
Increments either maximum or minimum volume levels |
45 |
A/15 |
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|
Decr |
Decrements either maximum or minimum volume levels |
48 |
A/17 |
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|
Reset |
Active low, used for start up |
41 |
Switch 1 |
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|
CODEC Chip |
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|
DX |
Digital sample of audio signal. 8 bits, in sign magnitude form |
100 |
A/55 |
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|
OUTPUT |
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|
Out_display(13) |
Bit of data for first seven segment display |
13 |
Display g for digit 1 |
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|
Out_display(12) |
Bit of data for first seven segment display |
12 |
Display f for digit 1 |
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|
Out_display(11) |
Bit of data for first seven segment display |
11 |
Display e for digit 1 |
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|
Out_display(10) |
Bit of data for first seven segment display |
9 |
Display d for digit 1 |
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|
Out_display(9) |
Bit of data for first seven segment display |
8 |
Display c for digit 1 |
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|
Out_display(8) |
Bit of data for first seven segment display |
7 |
Display b for digit 1 |
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|
Out_display(7) |
Bit of data for first seven segment display |
6 |
Display a for digit 1 |
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|
Out_display(6) |
Bit of data for second seven segment display |
24 |
Display g for digit 2 |
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|
Out_display(5) |
Bit of data for second seven segment display |
23 |
Display f for digit 2 |
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|
Out_display(4) |
Bit of data for second seven segment display |
21 |
Display e for digit 2 |
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|
Out_display(3) |
Bit of data for second seven segment display |
20 |
Display d for digit 2 |
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|
Out_display(2) |
Bit of data for second seven segment display |
19 |
Display c for digit 2 |
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|
Out_display(1) |
Bit of data for second seven segment display |
18 |
Display b for digit 2 |
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|
Out_display(0) |
Bit of data for second seven segment display |
17 |
Display a for digit 2 |
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|
CODEC Chip |
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|
BCLKX |
Input clock used to input digital data |
95 |
A/51 |
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|
FSX_Clock |
Input clock used to sample data |
98 |
A/53 |
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|
Gain Controller |
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|
Amp_out(7) |
MSB of amplifier gain logic |
195 |
C/15 |
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|
Amp_out(6) |
Bit of amplifier gain logic |
193 |
C/17 |
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|
Amp_out(5) |
Bit of amplifier gain logic |
191 |
C/19 |
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|
Amp_out(4) |
Bit of amplifier gain logic |
188 |
C/21 |
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|
Amp_out(3) |
Bit of amplifier gain logic |
186 |
C/23 |
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|
Amp_out(2) |
Bit of amplifier gain logic |
184 |
C/25 |
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|
Amp_out(1) |
Bit of amplifier gain logic |
182 |
C/27 |
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|
Amp_out(0) |
LSB of amplifier gain logic |
175 |
C/29 |
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