Lava STS Series, User Manual

Page: 17 / 20

LAVA Computer MFG STS Product Family User Manual – A01
2 Vulcan St. Toronto, ON Tel: +1 416 674-5942 www.lavalink.com 17 of 20
Canada, M9W 1L2 Fax: +1 416 674-8262 Toll Free (US & Canada): 800 241-5282
STS Module (formerly TL002c)
The LAVA product referred to as simply the “STS” is a 1-Port USB member of the LAVA STS Family of
devices. This product is a single board OEM device. This product was formerly designated the TL002c.
As with any member of the STS Product Family, this product in SimulCharge mode allows a Samsung
Tablet to be charged while interacting with USB Accessories. The module has the ability to operate in
SimulCharge Mode or Charge-Only Mode. The MODE and TYPE pins determine the current mode. Based
on the TYPE pin selection, the MODE pin is either level sensitive or edge sensitive.
The USB-A receptacle data lines are driven directly from the tablet unlike the STS-3U, which has an
integrated USB Hub. The power for USB accessories comes from the STS rather than the tablet, the same
as the STS-3U. The USB-A receptacle does not have the current limiting ability normally associated with a
USB Hub.
STS Board Layout
USB-A
Receptacle
to USB
Accessory
Micro USB-B
To Tablet
Micro USB-B
5V Power
Input
OPTIONAL
Power
Connector
MODE
TYPE
SimulCharge USB+
SimulChrg Charge
MADE IN
CANADA
L
A
V
A
C
O
M
P
U
T
E
R
S
M
O
K
O
L
1
6
9
.1
INT + INT +
Simulcharge
indicator LED
Charge Only
indicator LED
Note: The Tablet
connection requires a
custom USB-B to USB-B
cable includes with the
module.
(Standard 5V USB Power Supply)
(2mm center positive, 4.75V
min. to 5.25V regulated
supply, 3.5A rating)
With the TYPE jumper
not installed , the MODE pins are set to edge sensitive operation. The module
defaults to SimulCharge Mode on power up. The MODE pins are to be open by default, hence not shorted.
Shorting the MODE pins for a moment and then releasing it, toggles the mode between SimulCharge and
Charge-Only mode. The MODE pins must be shorted for at least ¼ second and released within 4 seconds
for the toggle to take place. Shorting the pins for longer than 4 seconds results in the pin being ignored until
it is eventually released and then shorted again.