XBIB-U Digi International/Maxstream, XBIB-U Datasheet - Page 12

• Manufacturer Part Number: XBIB-U
• Description: BOARD USB ZIGBEE MOD PRO
• Manufacturer: Digi International/Maxstream

Specifications of XBIB-U

• Design Resources: XBIB-U Shematic
• Accessory Type: Interface Board
• For Use With/related Products: XBee and XBee Pro Radios
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XBee/XBee‐PRO™ OEM RF Modules ‐ 802.15.4 ‐ v1.xAx [2007.05.031]
2.2. ADC and Digital I/O Line Support
2.2.1. I/O Data Format
X
X
The XBee/XBee-PRO RF Modules support ADC (Analog-to-digital conversion) and digital I/O line
passing. The following pins support multiple functions:
Table 2‐01. Pin functions and their associated pin numbers and commands
To enable ADC and DIO pin functions:
I/O data begins with a header. The first byte of the header defines the number of samples forth-
coming. A sample is comprised of input data and the inputs can contain either DIO or ADC. The
last 2 bytes of the header (Channel Indicator) define which inputs are active. Each bit represents
either a DIO line or ADC channel.
Figure 2‐04. Header
Sample data follows the header and the channel indicator frame is used to determine how to read
the sample data. If any of the DIO lines are enabled, the first 2 bytes are the DIO data and the
ADC data follows. ADC channel data is stored as an unsigned 10-bit value right-justified on a 16-
bit boundary.
Figure 2‐05. Sample Data
For ADC Support:
For Digital Input support:
For Digital Output Low support:
For Digital Output High support:
© 2007 MaxStream, Inc.
X
Total number of samples
X
X
DIO Line Data is first (if enabled)
Byte 1
X
AD = Analog‐to‐Digital Converter, DIO = Digital Input/Output
Pin functions not applicable to this section are denoted within (parenthesis).
Pin Function
AD0 / DIO0
AD1 / DIO1
AD2 / DIO2
AD3 / DIO3 / (COORD_SEL)
AD4 / DIO4
AD5 / DIO5 / (ASSOCIATE)
DIO6 / (RTS)
DIO7 / (CTS)
DI8 / (DTR) / (Sleep_RQ)
X
8
7
6
bit 15
na
5
A5
4
3
A4
2
A3
Sample Data
1
Header
A2
0
Bit set to ‘1’ if channel is active
Set ATDn = 2
Set ATDn = 3
Set ATDn = 4
Set ATDn = 5
A1
Pin#
20
19
18
17
11
15
16
12
9
Bytes 2 - 3 (Channel Indicator)
A0
ADCn MSB
D8
AT Command
D0
D1
D2
D3
D4
D5
D6
D7
D8
D7
D6
ADC Line Data
Chapter 2 ‐ RF Module Operation
D5
D4
D3
ADCn LSB
D2
D1
bit 0
D0
12