ETRX3DVKA357 Telegesis Ltd, ETRX3DVKA357 Datasheet - Page 10

• Manufacturer Part Number: ETRX3DVKA357
• Description: KIT DEVELOPMENT FOR ETRX357
• Manufacturer: Telegesis Ltd
• Type: ZigBit™r

Specifications of ETRX3DVKA357

• Frequency: 2.4GHz
• Kit Contents: 3x ETRX35xDV Development Boards, 3x USB Cables, 2x ETRX35x On Carrier Boards, 2x ETRX35xHR Boards
• Mcu Supported Families: ETRX3
• Silicon Manufacturer: Telegesis
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: ETRX357
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 920-1009; ETRX2DVK357

I/O breakout:
JP1 and JP2 give access to the I/O on the ETRX35x module. The individual pins are labelled on
the circuit board, and the pin numbering (PA0, PB1 etc) matches that of the EM35x chip inside the
module.
Flow Control Selection: JP5 is used to connect the RTS and CTS lines used for the flow control
to the host. By default flow control is disabled and the corresponding lines of the module are used
as standard I/Os (see the AT command dictionary on how to enable flow control), so the default
setting of JP5 does not connect those lines to the host as shown in Figure 5. When flow control is
enabled JP5 must be set as shown in Figure 6. Please make sure the jumpers are only set to this
configuration when flow control is enabled as otherwise I/Os driving against each other (via a
protective resistor) will increase the current consumption.
©2010 Telegesis (UK) Ltd
Figure 5. No Flow Control (default)
Pin
PA0
PA1
PA2
PA3
PA5
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB6
PB7
PC0
PC1
Table 4. I/O Connectivity on development board
Devboard functionality
Button1
Button2
Temp sensor supply
Light sensor supply
Bootloader button
Button3
TXD
RXD
CTS
RTS
ADC0 (Temp sensor reading)
Button4
LED1
Buzzer
LED2
ADC3 (Light sensor reading)
- 10 -
ETRX35xDVK Product Manual (Rev 1.01)
Figure 6. Flow control enabled
ETRX35x Development Kit