2 set/clear initial timeout of watchdog-timer, 3 clear exception code – ADLINK CoreExpress-ECO2 User Manual

Page 13

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4.2 Set/Clear initial timeout of Watchdog-timer

This command sets the Timeout value of the Watchdog-timer which is loaded at power-up. This
initial timeout value is given in seconds and has a 16-bit (two byte wide) size. It can be set from 25

to 65535 seconds. 0 disables the loading of an initial timeout to the Watchdog.

START SMC_addr ACK command ACK length ACK MSB_byte ACK LSB_byte ACK STOP

Table 4.2.1 SMC receiver format of the Watchdog-timer Command Code

ITEM

DESCRIPTION

START

SM-bus start condition

SMC_addr

0x50 (8-bit)

ACK

SM-bus acknowledge condition generated by receiver

command

0x22 = “Set/Clear initial Watchdog-timeout” Command code

length

0x02 = 2 Bytes data length

MSB_byte

High-byte of Timeout-value in seconds

LSB_byte

Low-byte of Timeout-value in seconds

STOP

SM-bus stop condition

Table 4.2.2 Explanation of Table 4.2.1

4.3 Clear Exception Code

This command clears the Flash stored Exception Code. Please look at the board technical manual
chapter “LEMT functions” for details.

START SMC_addr ACK command ACK STOP

Table 4.3.1 SMC receiver format of the Clear Exception Code Command Code

ITEM

DESCRIPTION

START

SM-bus start condition

SMC_addr

0x50 (8-bit)

ACK

SM-bus acknowledge condition generated by receiver

command

0x2E = “Clear Exception Code” Command code

STOP

SM-bus stop condition

Table 4.3.2 Explanation of Table 4.3.1

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