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*BC-ANT-SERIAL Manual [#gd1ca4a5]

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This is a manual for BC-ANT-SERIAL. BC-ANT-SERIAL is a ANT-Serial bridge module. This document mainly describes the hardware specifications of BC-ANT-SERIAL.


** 1.Overview [#vcee70e2]
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BC-ANT-SERIAL (hereafter “module”) is a bridge module between ANT and Serial communications. This module is capable of handling ANT wireless sensor network protocol running on 2.4 GHz ISM band. To use the module, a data communication network is easily built on 2.4GHz ISM band.~

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This module has been passed the radio equipment classification and technical standards tests, it has received a radio equipment conformity certification from the Japanese authority. Each device has own certification number label on the back side of the module. If the certification number label is modified, removed, and replaced, the certification will be void. After the certification is received, the modifications of the antenna, high-frequency circuit and other hardware are considered as illegal, and the status of radio equipment conformity certification will be revoked.

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&ref(DSCF7364.JPG,,25%);

** 2. How to connect to a host CPU [#z0d5b62d]
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Using TTL (1.9 ~ 3.6V single-end) level RS-232C interface, this module can be connected to microcomputers for embedded systems and PCs. (this assumes that both embedded systems and PCs are capable of handling RS-232C interface.) 

*** 2.1 How to connect to a TTL (single-end) microcomputer, [#v25ac63d]
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Connecting a TTL (single-end) microcomputer, a cable is connected to J2 terminal (20-pin). For the pin assignments of this terminal, please look at a table below. 

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| |Minimum|Standard|Maximum|Unit|
|Supply voltage(VDD)|1.9|3.0|3.6|V|
|H level input voltage| 0.7 x VDD||VDD|V|
|L level input voltage|VSS(GND)||0.3 x VDD|V|
|H level output voltage|VDD - 0.3||VDD|V|
|L level output voltage|VSS(GND)|| 0.3|V|

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J2 pin-assign table
|No|Signal Name |No|Signal Name|
|1 |RESET	  |2 |GND   |
|3 |BR2	  |4 |GND   |
|5 |SLEEP  |6 |GND   |
|7 |BR1    |8 |GND   |
|9 |BR3    |10|GND   |
|11|SUSPEND|12|GND   |
|13|RXD    |14|NC    |
|15|TXD    |16|NC    |
|17|RTS    |18|NC    |
|19|VDD    |20|GND   |

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Serial connection communicate by 8bit length, no parity, 1bit stop-bit-length, and hardware flow. Its communication speed are determined by the configurations BR1, BR2, and BR3 pins. The table below shows the relationships between various pin configurations and communication speeds.

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|BR3|BR2|BR1|Speed |
|  0|  0|  0| 4800|
|  0|  1|  0|19200|
|  0|  0|  1|38400|
|  0|  1|  1|50000|
|  1|  0|  0| 1200|
|  1|  1|  0| 2400|
|  1|  0|  1| 9600|
|  1|  1|  1|57600|

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Caution) At 57600bps, the internal chip cannot catch up the communication speed, cannot process, and may fail to execute some commands. 19200bps or lower communication speeds are highly recommended.

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&ref(ANT1.jpg,,25%);~
&ref(DSCF7365.JPG,,25%);~
This is an example of DIY communication cable

*** 2.2 How to communicate by RS232-C [#gab563d5]
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To use RS-232C interface, 1608 size jumper resistors are required at patterns of R18, R19, and R20. The locations of these patterns are shown below.

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&ref(ANT2.jpg,,25%);~

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Please configure the pins at J2 terminal as shown in the table below.

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Table of Pin Assignment at J2
|No |Signal Name   |Jumper Resistor |
|1-2|RESET    | Not Required     |
|3-4|BR2	     |(See the table below)|
|5-6|SLEEP    | Required     |
|7-8|BR1      |(See the table below)|
|9-10|BR3     |(See the table below)|
|11-12|SUSPEND| Not Required     |
|13-14|RXD    | Not Required      |
|15-16|TXD    | Not Required      |
|17-18|RTS    | Not Required      |
|19-20|VDD    |19: 3.3V, 20:GND|

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Number 19 pin and Number 20 pin are connected to the external power supply. The range of voltage at the external power supply is between 3.0 and 3.3V.  Number 19 pin is for the positive pole, and Number 20 pin is connected to the negative pole.

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Serial connection communicate by 8bit length, no parity, 1bit stop-bit-length, and hardware flow. Its communication speed is configured by the combinations of BR1, BR2, and BR3 pins at jumper. The combinations of pins are shown below.

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|BR3(9-10)|BR2(3-4)|BR1(7-8)|Speed |
| Yes| Yes|  Yes | 4800|
| Yes| No|  Yes |19200|
| Yes| Yes|  No |38400|
| Yes| No|  No |50000|
| No| Yes|  Yes | 1200|
| No| No| Yes | 2400|
| No| Yes|  No | 9600|
| No| No|  No |57600|
Caution) At 57600bps, the internal chip cannot catch up the communication speed, cannot process, and may fail to execute some commands. 19200bps or lower communication speeds are highly recommended.

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&ref(ANT1.jpg,,25%);

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RS-232C terminal (9-pin), which is widely used with PCs, should be connected by a commonly available cable (straight type) at electric stores.


** 3. Other notes [#zca90cc5]
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-  This module has already received a radio equipment conformity certification from the Japanese authority.
- The modifications of this module are not permitted. If it has done, its certification is void, and the use of this module in the public is regarded as illegal.
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This module gets warmer more than adequate, or it does not operate correctly, please turn off the module. 

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- Schematic &ref(BC-ANT-SERIAL_sch.pdf);
- Parts Placement &ref(BC-ANT-SERIAL_parts.pdf);
- Parts List &ref(partslist.xls);

* Revision History [#p9577dac]
-- 
2012/4/02 The article is initially uploaded.
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-- 2012/4/02 The article is initially uploaded.