AD8151 Ver la hoja de datos (PDF) - Analog Devices
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AD8151 Datasheet PDF : 40 Pages
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AD8151
CONTROL INTERFACE TRUTH TABLES
Table 4. Basic Control Functions
Control Pins1
RESET CS WE RE UPDATE Function
0
XX X
X
Global Reset. Reset all second rank enable bits to zero (disable all outputs).
1
1X X
X
1
00 1
1
1
01 0
1
1
01 1
0
1
00 1
0
Control Disable. Ignore all logic (but the signal matrix still functions as programmed). D [6:0]
are high impedance.
Single Output Preprogram. Write input configuration data from Data Bus D [6:0] into first rank
of latches for the output selected by the Output Address Bus A [4:0].
Single Output Readback. Readback input configuration data from second rank of latches onto
Data Bus D [6:0] for the single output selected by the Output Address Bus A [4:0].
Global Update. Copy input configuration data from all 17 first rank latches into second rank of
latches, updating signal matrix connections for all outputs.
Transparent Write and Update. It is possible to write data directly onto rank two. This simplifies
logic when synchronous signal matrix updating is not necessary.
1 X means don’t care.
Table 5. Address/Data Examples
Output Address Pins
MSB–LSB
Enable
Bit1
A4 A3 A2 A1 A0 D6/E
0 0 0 00 X
1 0 0 00 X
Binary Output Number 2
1
Binary Output Number2
0
1 0 0 01 X
1 0 0 10 X
Input Address Pins MSB–LSB1
D5 D4 D3 D2 D1 D0 Function
0 0 0 0 0 0 Lower Address/Data Range. Connect Output 00
(A[4:0] = 00000) to Input 00 (D[5:0] = 000000).
1 0 0 0 0 0 Upper Address/Data Range. Connect Output 16
(A[4:0] = 10000) to Input 32 (D[5:0] = 100000).
Binary Input Number
Enable Output. Connect Selected Output (A[4:0] = 0 to 16) to
Designated Input (D[5:0] = 0 to 32) and Enable Output
(D6 = 1).
X X X X X X Disable Output. Disable Specified Output (D6 = 0).
Binary Input Number
Broadcast Connection. Connect all 17 outputs to same
designated input and set all 17 enable bits to D6. Readback is
not possible with the broadcast address.
1 0 0 0 0 1 Reserved. Any address or data code greater or equal to these
are reserved for future expansion or factory testing.
1 X means don’t care.
2 The binary output number can also be the broadcast connection designator, 10001.
Rev. B | Page 13 of 40
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