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DM388 Processor
Ethernet Reset
Camera Reset
Warm Reset
Board-to-Board
Connector
BB_PORn from CC
AN
D
DDR Power IC
TPS51216
PMIC
TPS6591133
DDR_PGOOD
nRESPWRON2
10 K
10 K
10 K
10 K
3.3 V
PORn
RESETn
RESETOUTn
CAM_RESET
GP[3]_20
Copyright © 2016, Texas Instruments Incorporated
Reset Circuit and Distribution
19
SPRUIC7 – December 2016
Copyright © 2016, Texas Instruments Incorporated
TMDSCSK388 Module Interface Details
3.2
Reset Circuit and Distribution
Power good from PMIC TPS6591133 (nRESPWRO2), power good from DDR power IC (DDR_PGOOD),
and reset from the CSK carrier card are monitored to generate the power-on reset (PORn) to the DM388
processor. A 3-input AND gate is used to implement the reset logic. Warm reset for the processor is the
input from the CSK carrier card through the board-to-board connector.
The reset to the parallel camera module and the externally connected Ethernet are reset from the DM388
processor through the board-to-board connectors.
shows the board-reset circuit and distribution.
Figure 3-2. Reset Circuit and Distribution