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This card sends/receives data by dual-port RAM communication as illustrated.

DPRAM communication schematic

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Reset commands to this cards LPR (and devices under control by LPR) normally be accepted unless issued by hardware reset
or software command reset from the MPR routed through the eSAMSON.
This card's internal power reset circuit is for resetting the eSAMSON during power on and live wire connection/disconnection.
BRI2 card reset type is illustrated in table Reset system diagram.

Reset type

Reset system diagram

Reset Type

The way of Reset

Specification

Resting ASIC(eSAMSON)

OR condition of the following Reset

L active

Power on reset

Rest via Reset IC
Reset IC spec
Power Supply voltage: 3.3V
Reset voltage: 2.9V
Reset delay time: 50msec

Over 10msec

Hard reset via EC bus

Reset by EC_RST

Over 10msec 

Soft reset via EC bus

Disengaged after a set period of time

16cycles after EC_CLK about 2usec

Resetting
BRI_IC(PSB21150)

Soft reset via EC Bus

eSAMSON port P5[1:0] control

H active 4msec or above

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+40V power is supplied to internal port via an on-board relay.+40 V power is not supplied to external port by turning off the relay.
+15V power generates +3.3V by the DC/DC converter, and supplies this card's internal circuit power. illustrates power supply
system.

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