RESPONSE FORMAT '2' REQUEST LEAP SECONDS (currently GPS specific)
byte 1 S O H
byte 2 ' o ' ( l o w e r case letter)
byte 3 ' 2 '
byte 4 l e a p second tens
byte 5 l e a p second units
byte 6 E T B
byte 1 5 s e c o n d s units
byte 1 6 E T B
RESPONSE FORMAT '1' REQUEST CURRENT D to A VALUE
byte 1 S O H
byte 2 ' o ' ( l o w e r case letter)
byte
3
'1'
byte
4
'0' - 'F' bits 12-15
byte
5
'0' - 'F' bits 08-11
byte
6
'0' - 'F' bits 04-07
byte
7
'0' - 'F' bits 00-03
byte
8
ETB
RESPONSE FORMAT '3' REQUEST RTC YEAR
byte 1 S O H
byte 2 ' o ' ( l o w e r case letter)
byte 3
byte 4 R T C year tens
byte 5 R T C year units
byte 6 E T B
RESPONSE FORMAT '4' REQUEST YEAR
byte 1 S O H
byte 2 ' o ' ( l o w e r case letter)
byte 3 ' 4 '
byte 4 y e a r tens
byte 5 y e a r units
byte 6 E T B
The TFP signals a packet ready condition by setting bit2 in the
ACK
register. I t is the responsibility
of the host to clear this bit by writing to the
ACK
register with bit2 set.
4.1.14 PACKET 'P' PATH SELECTION
The term path selection is not the best descriptor for the action of this packet. I t might better be
called a switch or branch selector. The purpose of this packet is to allow the user to exercise control
over certain TFP processes. The path packet is used to download a single byte. Each bit in the byte
has a toggling action relative to a TFP function. The format is described below.
Datum Inc., Bancomm Div.
bc635VME/bc350VXI Manual
4
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9