OptConnect ema:Play User Manual page 10

Description Voltage (ref)
Main Power Min 4.5V (VIN)
Input Max 30V (VIN)
Min 6.75W
S2USB USB 5V (5V_S2USB)
JLink USB 5V (5V_USBJL)
Main 4V (4V0)
Regulator Max 3A
(U5) Output
Load Switch 4V (4VMOD)
(U6) Output Max 2A
MCU & 3.3V (3V3)
Interface Max 1A
Power (U7)
ema IOVREF Min 1.8V
(IO_VREF)
*Max 5.5V
(IO_VREF)
Table 1
Description Signal (ref)
ema Power disable 4VMOD_DIS (J4.2)
MCU & interface Power
3V3_DIS (J4.4)
disable
Onboard IOVREF
OB_uP_IOVREF_DIS (J5.28)
disable
Table 2
Sources Inputs Ports (ref)
External Barrel Connector (J9)
Source External VIN (J2/J1)
External USB S2USB Port (J10)
Port
External USB JLink USB Port (J13)
Port
Main Power na
Input
4V (4V0) na
4V (4V0) na
5V (5V_S2USB)
5V (5V_USBJL)
3.3V (3V3) Pwr App Hdr (J4.9)
External via
Pwr App Hdr
(J4.9)
* Onboard MCU (U16) must be held in reset if IOVREF is supplied as >4.1V
Systems Disabled
ema Power
3.3V Power rail
Onboard 3.3V IOVREF
© OptConnect Management, LLC 2020. All rights reserved. Revision 1.0
Systems
Outputs Ports (ref)
Powered
Test Hook (J9+) 4V,
Test Hook (ExtVIN, VIN) 4VMOD(ema),
3.3V
Test Hook (5vS2USB) 3.3V, S2USB
Test Point (TP76) 3.3V, JLink
Test Hook (4V0) 4V,
Pwr App Hdr (J4.1) 4VMOD(ema),
3.3V
Test Hook (4VMOD1, 4VMOD(ema)
4VMOD2)
Pwr App Hdr (J4.7)
Test Hook (3.3V) 3.3V
Pwr App Hdr (J4.3)
IO App Hdr (J5.12)
Test Hook (VIOREF1, ema IO
VIOREF2) interface
Notes
This signal can be driven high to disable ema's
power for power sensitive applications
This signal can be driven high to disable the entire
3.3V power rail. Typically, this would be used if an
external host embedded system is interfacing to ema
using the Application headers
This signal can be used to set ema's IOVREF level
from an external source
Feedback
(ref)
4V (D5)
4VMOD (D6)
3.3V (D7)
3.3V (D7)
S2USB (D9)
3.3V(D7)
JLink (D28)
4V (D5)
4VMOD (D6)
3.3V (D7)
4VMOD (D6)
3.3V (D7)
na
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