AD9940 データシートの表示（PDF） - Analog Devices
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AD9940 Datasheet PDF : 20 Pages
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Data Sheet
AD9940
Address
14
Data Bit Content
[2:0]
Default Value
3
Name
RGDRV
[3]
0
RGPOL
[6:4]
3
HLDRV
[7]
15
[5:0]
[7:6]
16
[5:0]
[7:6]
17
[5:0]
[7:6]
18
[5:0]
[7:6]
19
[3:0]
0
HLPOL
0
HLPOSLOC
—
Unused
24
HLNEGLOC
0
Unused
0
RGPOSLOC
—
Unused
24
RGNEGLOC
—
Unused
7
H2/H4DRV
[7:4]
7
H1/H3DRV
20
[5:0]
[6]
[7]
21
[5:0]
[7:6]
22
[5:0]
[7:6]
23
[5:0]
[7:6]
24
[7:0]
25
[7:0]
26
[7:0]
0
H1POSLOC
—
Unused
0
H1/H3POL
32
H1NEGLOC
—
Unused
32
SHPLOC
0
Unused
0
SHDLOC
—
Unused
0
TESTMODE
0
TESTMODE
0
TESTMODE
Description
RG drive strength (resolution = 2.2 mA/Step):
0 = Off
1 = 2.2 mA
2 = 4.4 mA
…
7 = 15.4 mA
RG polarity:
0 = normal
1 = inverted
HL drive strength (Resolution = 2.2 mA/Step):
0 = off
1 = 2.2 mA
2 = 4.4 mA
…
7 = 15.4 mA
HL polarity:
0 = normal
1 = inverted
HL rising edge location
HL negative edge location
RG rising edge location
RG negative edge location
H2/H4 drive strength (resolution = 4.3 mA/Step):
0 = Off
1 = 4.3 mA
2 = 8.6 mA
…
15 =64.5 mA
H1/H3 drive strength (resolution = 4.3 mA/Step):
0 = Off
1 = 4.3 mA
2 = 8.6 mA
…
15 = 64.5 mA
H1 positive edge location
H1/H3 polarity:
0 = normal
1 = inverted
(H2/H4 is opposite polarity of H1/H3)
H1 negative edge location
SHP sampling location
SHD sampling location
Always set = 0
Always set = 0
Always set = 0
Rev. A | Page 11 of 20
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