Specifications

Counter/Timers
The Multiple Latch command must be used to read the status. The
number of required read operations depends on the Read/Write Mode
and the Multiple Latch command. If the Read/Write Mode is high
byte or low byte and only the status is latched with the Multiple Latch
command, one read operation is all that is needed. Two reads are
required if both the status and the count are latched by the Multiple
Latch command. The first read is for the status and the second is for
the data. If the Read/Write Mode is programmed for two-byte
transfers and the Multiple Latch command is programmed to latch
only the status, one read is all that is required. If both the status and
data are latched, three reads are required. The first read is for the
status, and the next two are for the low byte and high byte of the
count, respectively.
Register: Status
Address:Base + Channel No.
76543210
BD
See TMD Register
CMODE
See TMD Register
RWM
See TMD Register
NC
Null Count
0 Count data valid
1 Count data invalid
OL
Output Level
0 Output level low
1 Output level high
Figure 7–6. Counter/Timer Status Register.
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