LTP5902-WHM_15 Datasheet, PDF (20/32 Pages) Linear Technology – SmartMesh WirelessHART Node Wireless Mote Module

LTP5901-WHM/LTP5902-WHM
Pin Functions
RADIO_INHIBIT: RADIO_INHIBIT provide a mechanism for
an external device to temporarily disable radio operaiton.
Failure to observe the timing requirements defined in
the Radio_Inhibit AC Characteristics table, may result
in unreliable netowrk operation. In designs where the
RADIO_INHIBIT function is not needed the input must
either be tied, pulled or actively driven low to avoid excess
leakage.
TMS, TCK, TDI, TDO: JTAG Port Supporting Software
Debug and Boundary Scan.
SLEEPn: The SLEEPn function is not currently supported
in software. The SLEEPn input must either be tied, pulled
or actively driven high to avoid excess leakage.
UART_RX, UART_RX_RTSn, UART_RX_CTSn, UART_TX,
UART_TX_RTSn, UART_TX_CTSn: The API UART interface
includes bi-directional wake up and flow control. Unused
input signals must be driven or pulled to their inactive state.
TIMEn: Strobing the TIMEn input is the most accurate
method to acquire the network time maintained by Eterna.
Eterna latches the network timestamp with sub-microsec-
ond resolution on the rising edge of the TIMEn signal and
produces a packet on the API serial port containing the
timing information.
UARTC0_RX, UARTC0_TX: The CLI UART provides a
mechanism for monitoring, configuration and control of
Eterna during operation. For a complete description of the
supported commands see the SmartMesh WirelessHART
Mote CLI API Guide.
FLASH_P_ENn, IPCS_SSn, IPCS_SCK, IPCS_MISO,
IPCS_SSn: The In-circuit Programming Control System
(IPCS) bus enables in-circuit programming of Eterna’s flash
memory. IPCS_SCK is a clock and should be terminated
appropriately for the driving source to prevent overshoot
and ringing.
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For more information www.linear.com/LTP5901-WHM or www.linear.com/LTP5902-WHM
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