Eurotech BitsyXb - J6: Input Power

Hardware Reference
110118-0001A 17
Pin
Name
Pin
Type
Description
29
USB+
IO
USB Client (4.5.2)
USB-
30
IO
31
GND
P
ground
HP_IN
32
I
Headphone connected (4.4.2, 6.3.8)
33
USB_RECONN
0
USB Client power management
8
(4.5.2)
GND
34
P ground
36
35
STXD
O
MOSI
SPI signals (4.5.3)
37
SRXD
I
MISO
39
SCLK2
O
SCLK
43
SFRM2
O
SS
VBATT_POS
38
PI
External battery
(5.3.7)
VBATT_NEG
40
P
41
POWERENABLE
O
Power supply control (5.3.2)
/PE1
42
O
Power Enable #1 for external devices (5.3.2)
DCIN_POS
44
PI
External power
(also on J6)
48
45 /RQONOFF I
"Request On/Off" Switch
(5.3.3, 6.3.1)
GND
46
P ground
47
49
BATPOS
50
PI
Real-time clock backup battery (4.2, 6.3.4)
3.3.4 J6: Input Power
Board Connector: Molex 22-23-2021
Recommended Mating Connector: 22-01-3027
These power inputs are also connected to J3. See Chapter 5 and section 6.3.3 for input power
specifications.
Pin
Name
Type
Description
1
DCIN_POS
PI
DC power
2
GND
P
ground
8
A 1kΩ series resistor is included on USB_RECONN.