tm1300 NXP Semiconductors, tm1300 Datasheet - Page 358

• Manufacturer Part Number: tm1300
• Description: Tm-1300 Media Processor
• Manufacturer: NXP Semiconductors

TM1300 Data Book
hicycles
SYNTAX
FUNCTION
DESCRIPTION
hicycles
destination register, r dest . The contents of the master counter are transferred to the slave CCCOUNT register only on
a successful interruptible jump and on processor reset. Thus, if
intervening interruptible jumps, the operation pair is guaranteed to be a coherent sample of the master clock-cycle
counter. The master counter increments on all cycles (processor-stall and non-stall) if PCSW.CS = 1; otherwise, the
counter increments only on non-stall cycles.
modification of the destination register. If the LSB of r guard is 1, r dest is written; otherwise, r dest is not changed.
EXAMPLES
A-72
CCCOUNT_HR = 0xabcdefff12345678
r10 = 0, CCCOUNT_HR = 0xabcdefff12345678
r20 = 1, CCCOUNT_HR = 0xabcdefff12345678
Refer to
The hi
[ IF r guard ] hicycles
if r guard then
r dest
cycles
Section 3.1.6, “CCCOUNT—Clock Cycle Counter”
CCCOUNT<63:32>
operation copies the high 32 bits of the slave register Clock Cycle Counter (CCCOUNT) to the
operation optionally takes a guard, specified in r guard . If a guard is present, its LSB controls the
Initial Values
PRODUCT SPECIFICATION
r dest
Read clock cycle counter, most-significant word
hicycles
IF r10 hicycles
IF r20 hicycles
Operation
for a description of the CCCOUNT operation. The
r60
cycles
r70
r100
and
cycles curcycles writepcsw
Function unit
Operation code
Number of operands
Modifier
Modifier range
Latency
Issue slots
hicycles
r60
no change, since guard is false
r100
Philips Semiconductors
0xabcdefff
0xabcdefff
ATTRIBUTES
SEE ALSO
are executed without
Result
fcomp
155
No
—
0
1
3