Pin Configuration And Function Descriptions - Analog Devices AD9854 User Manual

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

Table 4. Pin Function Descriptions
Pin No. Mnemonic
1 to 8 D7 to D0
9, 10, 23, 24, 25, DVDD
73, 74, 79, 80
11, 12, 26, 27, 28, DGND
72, 75 to 78
13, 35, 57, 58, 63 NC
14 to 16 A5 to A3
17 A2/IO RESET
18 A1/SDO
19 A0/SDIO
80 79 78 77 76
D7
1
PIN 1
D6
2 INDICATOR
D5
3
D4 4
D3
5
D2
6
D1 7
D0
8
DVDD 9
DVDD 10
DGND
11
DGND 12
NC 13
A5
14
A4 15
A3
16
A2/IO RESET 17
A1/SDO 18
A0/SDIO
19
I/O UD CLK 20
21 22 23 24 25 26 27 28 29 30 31 32 33
NC = NO CONNECT
Figure 2. Pin Configuration
Description
8-Bit Bidirectional Parallel Programming Data Inputs. Used only in parallel programming mode.
Connections for the Digital Circuitry Supply Voltage. Nominally 3.3 V more positive than AGND
and DGND.
Connections for the Digital Circuitry Ground Return. Same potential as AGND.
No Internal Connection.
Parallel Address Inputs for Program Registers (Part of 6-Bit Parallel Address Inputs for Program
Register, A5:A0). Used only in parallel programming mode.
Parallel Address Input for Program Registers (Part of 6-Bit Parallel Address Inputs for Program
Register, A5:A0)/IO Reset. A2 is used only in parallel programming mode. IO RESET is used when
the serial programming mode is selected, allowing an IO RESET of the serial communication bus
that is unresponsive due to improper programming protocol. Resetting the serial bus in this
manner does not affect previous programming, nor does it invoke the default programming
values listed in Table 8. Active high.
Parallel Address Input for Program Registers (Part of 6-Bit Parallel Address Inputs for Program
Register, A5:A0)/Unidirectional Serial Data Output. A1 is used only in parallel programming
mode. SDO is used in 3-wire serial communication mode when the serial programming mode is
selected.
Parallel Address Input for Program Registers (Part of 6-Bit Parallel Address Inputs for Program
Register, A5:A0)/Bidirectional Serial Data I/O. A0 is used only in parallel programming mode. SDIO
is used in 2-wire serial communication mode.
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61
AD9854
TOP VIEW
(Not to Scale)
34 35 36 37 38 39 40
Rev. E | Page 9 of 52
AVDD
60
AGND
59
NC
58
57 NC
DAC R
56
SET
DACBP
55
54 AVDD
AGND
53
52 IOUT2
51 IOUT2
AVDD
50
49 IOUT1
48 IOUT1
AGND
47
46 AGND
AGND
45
44 AVDD
43 VINN
VINP
42
41 AGND
AD9854