THSEU101 User Manual
Rev. 1.00
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Configuration and GPIO control DIP switches
The block of eight DIP switches P903 allows to control THCV241A configuration pins as well as THCV241A GPIO signals.
As it applies to DIP switches: position “down”/ “Off” / “0” means the switch is open,
position “up” / “On” / “1” means that switch is closed.
Switch 1 and 2 directly control the THCV241A PDN0 and PDN1 respectively.
Switch 3 and 4, control the value and connection to MSSEL and HTPDN on the THCV241A and used in combination. The
MSEL is a dual function signal based on the value of PDN1. Please see datasheet for more details.
Switches 5, 6, 7, 8 are connected to GPIO pins of the THCV241A. Since these pins can be input or output the Switched
can control a pull up or pull down value for each signal.
Pin Name
SW# IC Pin # Description
Default
PDN0
1
24
Whole IC Power Down
SW = 0 (Off) = Logic 1 to THCV241A : Normal Operation
SW = 1 (On) = Logic 0 to THCV241A : Power Down
SW = 0
(Off)
PDN1
2
12
Sub-Link Power Down
SW = 0 (Off) = Logic 1 to THCV241A : Sub-Link Normal Operation
SW = 1 (On) = Logic 0 to THCV241A : Sub-Link Power Down
SW = 0
(Off)
MSSEL
3
22
MSSEL (PDN1=1): Sub-Link Master/Slave Select
SW = 0 (Off) = Logic 1 to THCV241A : Sub-Link Slave Side
SW = 1 (On) = Logic 0 to THCV241A : Sub-Link Master Side
HTPDN (PDN1=0): Hot Plug Detect input Negative polarity.
SW = 0
(Off)
MSSEL/
HTPDN
connection
4
N/A
When MSSEL function is HTPDN (PDN1=0), this switch can make the
connection of HTPDN to MSSEL pin on THCV241A
SW = 0
(Off)
GPIO3
5
10
GPIO[3]
SW = 0 (Off) = Pull down on THCV241A GPIO pin
SW = 1 (On) = Pull up on THCV241A GPIO pin
SW = 0
(Off)
GPIO2
6
9
GPIO[2]
SW = 0 (Off) = Pull down on THCV241A GPIO pin
SW = 1 (On) = Pull up on THCV241A GPIO pin
SW = 0
(Off)
GPIO1
7
8
GPIO[1]
SW = 0 (Off) = Pull down on THCV241A GPIO pin
SW = 1 (On) = Pull up on THCV241A GPIO pin
SW = 0
(Off)
