ACS8520T Semtech, ACS8520T Datasheet - Page 60

• Manufacturer Part Number: ACS8520T
• Description: Synchronous Equipment Timing Source (SETS) for Stratum 3/4E/4 and SMC Systems
• Manufacturer: Semtech

Address (hex):
Revision 3.02/October 2005 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
operating_
mode
Bit No.
Bit 7
7
6
5
4
3
2
1
0
06
sts_interrupts
main_ref_failed I14
Description
operating_mode
Interrupt indicating that the operating mode has
changed. Latched until reset by software writing a 1
to this bit.
main_ref_failed
Interrupt indicating that input to the T0 DPLL has
failed. This interrupt will be raised after 2 missing
input cycles. This is much quicker than waiting for
the input to become invalid. This input is not
generated in Free-run or Holdover modes. Latched
until reset by software writing a 1 to this bit.
I14
Interrupt indicating that input I14 has become valid
(if it was invalid), or invalid (if it was valid). Latched
until reset by software writing a 1 to this bit.
I13
Interrupt indicating that input I13 has become valid
(if it was invalid), or invalid (if it was valid). Latched
until reset by software writing a 1 to this bit.
I12
Interrupt indicating that input I12 has become valid
(if it was invalid), or invalid (if it was valid). Latched
until reset by software writing a 1 to this bit.
I11
Interrupt indicating that input I11 has become valid
(if it was invalid), or invalid (if it was valid). Latched
until reset by software writing a 1 to this bit.
I10
Interrupt indicating that input I10 has become valid
(if it was invalid), or invalid (if it was valid). Latched
until reset by software writing a 1 to this bit.
I9
Interrupt indicating that input I9 has become valid
(if it was invalid), or invalid (if it was valid). Latched
until reset by software writing a 1 to this bit.
Bit 6
Bit 5
Description
I13
Bit 4
FINAL
Page 60
(R/W) bits [15:8] of the interrupt
status register.
I12
Bit Value
Bit 3
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
I11
Value Description
Operating mode has not changed.
Operating mode has changed.
Writing 1 resets the input to 0.
Input to the T0 DPLL is valid.
Input to the T0 DPLL has failed.
Writing 1 resets the input to 0.
Input I14 has not changed status (valid/invalid).
Input I14 has changed status (valid/invalid).
Writing 1 resets the input to 0.
Input I13 has not changed status (valid/invalid).
Input I13 has changed status (valid/invalid).
Writing 1 resets the input to 0.
Input I12 has not changed status (valid/invalid).
Input I12 has changed status (valid/invalid).
Writing 1 resets the input to 0.
Input I11 has not changed status (valid/invalid).
Input I11 has changed status (valid/invalid).
Writing 1 resets the input to 0.
Input I10 has not changed status (valid/invalid).
Input I10 has changed status (valid/invalid).
Writing 1 resets the input to 0.
Input I9 has not changed status (valid/invalid).
Input I9 has changed status (valid/invalid).
Writing 1 resets the input to 0.
Bit 2
Default Value
I10
ACS8520 SETS
Bit 1
DATASHEET
www.semtech.com
0011 1111
I9
Bit 0