Data Sheet AD9914
Rev. F | Page 9 of 45
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
D17
D16
D15/A7
D14/A6
D13/A5
DVDD (1.8V)
DGND
D12/A4
D11/A3
D10/A2
D9/A1
D8/A0
D7
D6
D5
DVDD_I/O (3.3V)
17DGND
18D4/SYNCIO
19D3/SDO
20D2/SDIO/WR
23
24
25
26
27
28
29
30
31
32
33
34
36
37
DVDD (1.8V)
DGND
PS0
PS1
PS2
F0
F1
F2
F3
AVDD (1.8V)
AGND
AVDD (3.3V)
35AGND
AVDD (3.3V)
AGND
38AGND
39AVDD (3.3V)
40AVDD (3.3V)
41
AOUT
58
57
56
55
54
53
52
51
50
49
48
47
46
45
LOOP_FILTER
59 REF
60 AVDD (3.3V)
61 SYNC_OUT
62 SYNC_IN
63 DRCTL
64 DRHOLD
65 DROVER
66 OSK
AVDD (1.8V)
AVDD (1.8V)
REF CLK
REF CLK
AVDD (3.3V)
AVDD (3.3V)
AGND
AVDD (3.3V)
AGND
DAC_RSET
AVDD (3.3V)
AGND
DAC_BP
78
77
76
75
74
73
72
71
70
69
68
67
D23
79 D22
80 D21
81 D20
82 SYNC_CLK
83 DVDD_I/O (3.3V)
84 DGND
85 MASTER_RESET
86 I/O_UPDATE
87 D19
88 D18
D24
D25
D26
DGND
DVDD (1.8V)
D27
D28
D29
D30
D31
EXT_PWR_DWN
NOTES
1. THE EPAD MUST BE SOLDERED TO GROUND.
10836-003
21D1/SCLK/RD
22D0/CS/PWD
42AOUT
43AVDD (3.3V)
44AGND
AD9914
TOP VIEW
(Not to Scale)
Figure 3. Pin Configuration
Table 5. Pin Function Descriptions
Pin No. Mnemonic I/O
1
Description
1, 2, 13 to 15, 68
to 72, 75 to 81,
87, 88
D5 to D7, D16 to
D31, D27 to D31
I/O
Parallel Port Pins. The 32-bit parallel port offers the option for serial or parallel programming
of the internal registers. In addition, the parallel port can be configured to provide direct FSK,
PSK, or ASK (or combinations thereof) modulation data. The 32-bit parallel port configuration
is set by the state of the four function pins (F0 to F3).
3 D15/A7 I/O
Parallel Port Pin/Address Line. The state of the F0 to F3 function pins determines if this pin
acts as a line for direct FSK, PSK, or ASK data or as an address line for programming the
internal registers.
4 D14/A6 I/O
Parallel Port Pin/Address Line. The state of the F0 to F3 function pins determines if this pin
acts as a line for direct FSK, PSK, or ASK data or as an address line for programming the
internal registers.
5 D13/A5 I/O
Parallel Port Pin/Address Line. The state of the F0 to F3 function pins determines if this pin
acts as a line for direct FSK, PSK, or ASK data or as an address line for programming the
internal registers.
8 D12/A4 I/O
Parallel Port Pin/Address Line. The state of the F0 to F3 function pins determines if this pin
acts as a line for direct FSK, PSK, or ASK data or as an address line for programming the
internal registers.
9 D11/A3 I/O
Parallel Port Pin/Address Line. The state of the F0 to F3 function pins determines if this pin
acts as a line for direct FSK, PSK, or ASK data or as an address line for programming the
internal registers.
10 D10/A2 I/O
Parallel Port Pin/Address Line. Multipurpose pin depending on the state of the function pins
(F0 to F3). The state of the F0 to F3 function pins determines if this pin acts as a line for direct
FSK, PSK, or ASK data or as an address line for programming the internal registers.
11 D9/A1 I/O
Parallel Port Pin/Address Line. Multipurpose pin depending on the state of the function pins
(F0 to F3). The state of the F0 to F3 function pins determines if this pin acts as a line for direct
FSK, PSK, or ASK data or as an address line for programming the internal registers.