PSD5XX Famly
89
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
*
*
*
*
FrezAck3
FrezAck2
FrezAck1
FrezAck0
NOTES:
At RESET all these bits intialize as 0's.
*
= Not used.
9.6.2.6 Status Flags Register
There are eight READ-ONLY status flags. The lower four bits represent Freeze
Acknowledge bits.
Counter/Timer
Registers
(Cont.)
FrezAck Bits
These Freeze Acknowledge bits are useful in the Freeze/Freeze Acknowledge protocol.
After the Microcontroller senses that the FrezAck bit is being set it proceeds to access the
Image Register for a read or write operation.
FrezAck0 Bit:
When this bit is
1:
Image Register Access is granted.
0:
Image Register Access is not granted.
FrezAck1 Bit:
When this bit is
1:
Image Register Access is granted.
0:
Image Register Access is not granted.
FrezAck2 Bit:
When this bit is
1:
Image Register Access is granted.
0:
Image Register Access is not granted.
FrezAck3 Bit:
When this bit is
1:
Image Register Access is granted.
0:
Image Register Access is not granted.
DLCY Register:
Bits
<
4:0
>
of the DLCY register are used to assign Delay Cycles to the Counter/Timer.
At RESET these bits initialize as 0. If necessary, the user has the option to set these bits up
to generate Delay Cycles (DLCY) to scale down the Counter/Timer clock (see Table 24).
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
*
*
*
DLCY4
DLCY3
DLCY2
DLCY1
DLCY0
NOTE:
*
= Not used.