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SR/AI
SR/AP
Hardware Reference
Release r09
Page 28 of 76
Notes:
(1)
a discrete pull-up resistor is used
(2)
a discrete pull-down resistor is used
(3)
function depends on firmware
(4)
DNU: Do Not Use, Do Not Connect
(5)
If TRACE feature should be used, this signal has to be made accessible in customer hardware
(6)
NFC support will be available with SPP FW version V1.500 and higher. Use 4k7 PU each on signals NFC_SCLK and NFC_SDA
4.3 Handling of Unused Signals
Depending on the application, not all signals of SR may be needed. The following list
gives some hints how to handle unused signals.
EXT-RES#
If no external Reset is needed: Leave open (*)
BOOT0
(*) [leave open]
SLCK
If no external slow clock is provided: Leave open or tie to
GND
UART-RTS#, UART-CTS# If neither flow control nor UICP is used: Leave open
IUR-OUT#, IUR-IN#
If UICP is not used: leave open
BT-ACT, BT-STAT,
If there is no WLAN device on the same PCB: Leave open
BT-PER, WLAN-DNY
TESTMODE#
Leave open
unused GPIOs
Leave open
SWDIO, SWCLK
Leave open. Only needed for debug purposes.
GPIO(6)
Leave open, connect to via or header pin for getting debug
TRACE_UART_TXD
information in customer hardware
(*) for being able to update the firmware, it is strongly recommended to provide for a means to set
BOOT0 temporarily to logic high level, and to reset the module; see chapter 3.14.
Summary of Contents for BlueMod+SR/AI
Page 1: ...BlueMod SR AI BlueMod SR AP Hardware Reference Release r09 ...
Page 57: ...BlueMod SR AI BlueMod SR AP Hardware Reference Release r09 www stollmann de Page 57 of 76 ...
Page 65: ...BlueMod SR AI BlueMod SR AP Hardware Reference Release r09 www stollmann de Page 65 of 76 ...
Page 66: ...BlueMod SR AI BlueMod SR AP Hardware Reference Release r09 www stollmann de Page 66 of 76 ...
Page 67: ...BlueMod SR AI BlueMod SR AP Hardware Reference Release r09 www stollmann de Page 67 of 76 ...