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R01UH0336EJ0102 Rev.1.02
Page 353 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 10 Safety Guardian (SGA)
10.3.2
SGA Configuration Overview
The SGA supports the following functions.
• Error set/clear register
– The error set/clear register is used to enter or release the active or
inactive error state. Where active (error set) means that the error output
SGATERROUTZ is low independent from the error inputs
SGATERRINxx. Inactive (error clear) means that the error output
SGATERROUTZ is high (or toggled by timer input) until an error is
indicated by SGATERRINxx.
• Error source status registers
– Represent the status of the individual error source input SGATERRINxx.
• Error source status clear registers
– Are used to clear the individual error status.
• Error mask registers
– Each individual error input SGATERRINxx can be masked towards the
error output SGATERROUZ.
• Internal reset configuration registers
– Each individual error input SGATERRINxx can be configured to generate
an internal reset or not.
• Interrupt configuration register
– Interrupt generation by SGATI can be configured for some error inputs
SGATERRIN41 to SGATERRIN32.
• Pseudo error registers
– This function allows functional tests of the error path by pseudo error
injection.
• Error pulse configuration register
– The SGATERROUTZ error-output signal can be configured for dynamic
or non-dynamic operation. In dynamic mode, the error-output signal
operates in accord with the level on SGATTIN.
The register and signal dependency is shown below.
Figure 10-4
SGA Register and Signal Dependency
SGAmESSR
SGAPE
SGAmESSCR
SGATERRINxx
SGAmEMK
SGAIRCFG
SGAICFG
SGAmESET
SGAmECLR
SGATERROUTZ
SGARES
SGATI
SGA error pulse
SGAmEPCFG
SGATTIN
SGATERRLB
SGA error source status clear
Clear
Set
Set
SGA error source status
SGA pseudo error
SGA error source mask
SGA internal reset
SGA error set
SGA error clear
SGA interrupt
Содержание V850 Series
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