Teridian 73S1217F, User Manual, Page: 14 / 34

73S1217F Evaluation Board User Guide UG_1217F_040
14 Rev. 2.4
Item
#
Schematic
and
Silkscreen
Reference
Default
setting
Name Use
9 JP3 Not
Inserted RS-232 Xcvr power Power supply jumper for the RS232 transceiver
chip. Can be removed to obtain accurate power
measurements.
10 D2, D3 LEDs:
Serial link activity These LEDs (D2, D3) reflect the activity on the
serial link (RS232 or serial).
D2 reflects the activity on the RX line (Data
going TO the 73S1217F)
D3 reflects the activity on the TX line (Data
coming FROM the 73S1217F)
11 U5 LCD Module On-board LCD module:
•
2 lines of 16 characters, each character dot
matrix is 5x7.
•
Includes an embedded Hitachi HD44780
LCD driver, controlled from the on-board
73S1217F USR interface.
12 RV1 Adjustable resistor to
adjust LCD brightness Can be used to adjust the brightness of the on-
board LCD module.
13 S2 to S26,
S27 to S32 On-board keypad 5x6 keyboard directly connected to the on-board
73S1217F IC (68-pin only). The assignment of
the keys, as silk-printed on the PCB, is the one
supported by the TSC Application Programming
Interface.
14 – Board reference and
serial number Should be mentioned in any communication with
Teridian when requesting support.
15 D8 VDD power indicator Indicates when the 73S1217F is turned on (VDD
= 3.3 V).
16 S33 ON/OFF switch Switch used to turn on and off the 73S1217F.
The switch is overridden when VBUS is applied
(VDD is always on).
When VDD is on and the switch is pressed, the
73S1217F will activate the OFF_REQ signal
and the 73S1217F must set the SCPWRDN or
PWRDN bits to shutoff VDD.
17 JP7 ON/OFF Power ON/OFF select
jumper This jumper will select between the ON/OFF
switch and ground. When the switch is
selected, the VDD power will toggle between on
and off (see item #16). When ground is
selected, the VDD will turn on automatically
upon application of VPC to the 73S1217F.
18 – Breadboard area This breadboard area allows engineers to add
their own circuitry / connection of peripherals
when prototyping and developing a 73S1217F
based application. User I/Os, GPIOs, interrupt
pins and power supply pins are located close to
this area to allow easy connection.
19 JP9 OFF_REQ INT3 select Selects the source for INT3 between the
73S8010R and the OFF_REQ pin on the
73S1217F. Should be set opposite of JP21.