DS1603 Datasheet, PDF (4/8 Pages) National Semiconductor (TI) – TRI-STATE Dual Receiver

DS1603
VALID PROTOCOLS Table 1
ACTION
PROTOCOL
ACC AVC OSC2 OSC1 OSC0 CCC CVC RD ^DESCRIPTION
Read
1
0
X
X
X
X X 1 Output continuous
Continuous
counter on the 32 clocks
Counter
following protocol.
Oscillator trim register
is not updated.
Counters are not reset.
Write
1
0
X
X
X
X X 0 Input data to continuous
Continuous
counter on the 32 clocks
Counter
following protocol.
Oscillator trim register
is not updated.
Counters are not reset.
Read V_CC
Active
0
1
X
X
X
X X 1 Output V_CC active
counter on the 32 clocks
Counter
following protocol,
oscillator trim register
is not updated.
Counters are not reset.
Write V_CC
Active
0
1
X
X
X
X X 0 Input data to continuous
counter on the 32 clocks
Counter
following protocol.
Oscillator trim register
is not updated.
Counters are not reset.
Clear
0
0
X
X
X
1
X X Resets the continuous
Continuous
counter to all zeroes at
Counter
the end of protocol.
Oscillator trim register
is not updated.
Clear V_CC
Active
0
0
X
X
X
X1
X Resets the V_CC active
counter to all zeroes at
Counter
the end of protocol.
Oscillator trim register
is not updated.
Set Oscillator 1
1
A
B
C
X X 0 Sets the oscillator trim
Trim Bits
register to a value of
ABC. Counters are
unaffected.
X = Don’t Care
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