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comparison Calypso-test-reset @ 16:396d44c543e3

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Calypso-test-reset: typo fix
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 31 May 2019 19:07:21 +0000
parents 38cc5795d79c
children
comparison
equal deleted inserted replaced
15:38cc5795d79c 16:396d44c543e3
102 that does not occur at any other time. For as long as nTESTRESET is held low, 102 that does not occur at any other time. For as long as nTESTRESET is held low,
103 both reset signals to the Calypso (nRESPWON and ON_nOFF) will be held low as 103 both reset signals to the Calypso (nRESPWON and ON_nOFF) will be held low as
104 well, putting the Calypso into a POR-like superdeep reset, but meanwhile the 104 well, putting the Calypso into a POR-like superdeep reset, but meanwhile the
105 LDO regulators are fully turned on, not off! While nTESTRESET is held low, the 105 LDO regulators are fully turned on, not off! While nTESTRESET is held low, the
106 green LED on the FCDEV3B will be off (ON_nOFF is low), but the regulators are 106 green LED on the FCDEV3B will be off (ON_nOFF is low), but the regulators are
107 on, as can be seen on JTAG connector pin 5 where the V-IO rail is brough out. 107 on, as can be seen on JTAG connector pin 5 where the V-IO rail is brought out.
108 This combination of ON_nOFF low (green LED off) but regulators on happens only 108 This combination of ON_nOFF low (green LED off) but regulators on happens only
109 in this special nTESTRESET-held-low state and not at any other time. 109 in this special nTESTRESET-held-low state and not at any other time.
110 110
111 When the RESET button and XDS_RESET are both released, causing nTESTRESET to go 111 When the RESET button and XDS_RESET are both released, causing nTESTRESET to go
112 back to high, the VRPC state machine goes from the special nTESTRESET state to 112 back to high, the VRPC state machine goes from the special nTESTRESET state to