Teridian 73S1217F, Руководство пользователя, Страница: 16 / 34

73S1217F Evaluation Board User Guide UG_1217F_040
16 Rev. 2.4
Item
#
Schematic
and
Silkscreen
Reference
Default
setting
Name Use
28 S27 Reset button Evaluation board main reset: Asserts a
hardware reset to the on-board 73S1217F IC.
29 JP12 Inserted LED0 jumper In normal use, a jumper must be inserted in this
header to connect the LEDs to the LED pins of
the 73S1217F. This jumper can be replaced by
a µA / mA-meter to measure the actual current
drawn by the LED output of the 73S1217F.
30 JP15 GND Jumper: security fuse
control This jumper should be removed at all times.
Connecting the jumper will allow the security
fuses to be blown under firmware control. Refer
to the
73S1217F Data Sheet for further
information about the security fuse.
31 JP20 Not
Inserted Analog select Selects the analog input between TP32 and the
VBAT input voltage (via resistor divider).
32 JP8 Not
Inserted VBAT select Selects the VBAT input between an external
supply on J3 or the unregulated 5 V on PJ1.
33 J1, J4 SIM / SAM and Smart
Card connectors –
internal interface (#1) Allows the evaluation board to communicate
with a smart card using either the standard
(credit card size) or SIM/SAM format: This slot
is connected to the 73S1217F built-in card
interface # 1.
J1 is wired in parallel to the smart card
connector J4 (underneath the PCB). Both
connectors cannot be used at the same time.
34 JP4 Inserted VDD jumper The VDD supply jumper can be replaced with a
current meter to measure the power
consumption on VDD.
35 JP1 VBUS Jumper:
5V power supply
selection This jumper selects the 5.0 V power supply. It
selects either the unregulated 5 V supply from
PJ1 or the 5.0 V from the USB VBUS:
•
In position “5V UNREG”, the evaluation
board 5.0 V is powered from the PJ1
connector.
•
In position “VBUS”, the evaluation board is
powered from the USB VBUS.
36 JP5 Not
Inserted Jumper:
VPC power supply
selection This jumper selects the VPC power supply. It
selects either the power supply connected to
plug J2 or the 5 V unregulated supply on the
PJ1 connector.
•
In position “5V UNREG”, the evaluation
board VPC is connected to 5 V coming in on
PJ1.
•
In position “EXT VPC”, the evaluation board
VPC is powered from the voltage applied on
the plug J2.