ACS8525T Semtech, ACS8525T Datasheet - Page 45

• Manufacturer Part Number: ACS8525T
• Description: Line Card Protection Switch for SONET/SDH Systems
• Manufacturer: Semtech

Address (hex):
Address (hex):
Revision 3.01/August 2005 © Semtech Corp.
ADVANCED COMMUNICATIONS
Register Name
operating_
mode
Register Name
Bit No.
Bit No.
Bit 7
[5:1]
Bit 7
[7:3]
[2:0]
6
0
06 (cont...)
07
sts_interrupts
DPLL1_
main_ref_failed
Description
DPLL1_main_ref_failed
Interrupt indicating that input to the DPLL1 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.
Not used.
status_SEC3
Interrupt indicating that input SEC3 has become
valid (if it was invalid), or invalid (if it was valid).
Latched until reset by software writing a 1 to this bit.
sts_current_DPLL_frequency
[18:16]
Description
Not used.
Bits [18:16] of sts_current_DPLL_frequency
When Bit 4 (DPLL1_DPLL2_select) of Reg. 4B
(cnfg_registers_source_select) = 0 the frequency
for DPLL1 is reported.
When this Bit 4 = 1 the frequency for DPLL2 is
reported.
Bit 6
Bit 6
Bit 5
Bit 5
Description
Description
Bit 4
Bit 4
FINAL
Page 45
(R/W) Bits [15:8] of the interrupt
status register.
(RO) Bits [18:16] of the current
DPLL frequency.
Bit Value
Bit Value
Bit 3
Bit 3
0
1
0
1
-
-
-
Value Description
Input to DPLL1 is valid.
Input to DPLL1 has failed.
Writing 1 resets the interrupt to 0.
-
Input SEC3 has not changed status (valid/invalid).
Input SEC3 has changed status (valid/invalid).
Writing 1 resets the interrupt to 0.
Value Description
-
See register description of
sts_current_DPLL_frequency at Reg. 0D.
Bits [18:16] of sts_current_DPLL_frequency
Bit 2
Bit 2
Default Value
Default Value
ACS8525 LC/P
Bit 1
Bit 1
DATASHEET
www.semtech.com
0011 1111
status_SEC3
0000 0000
Bit 0
Bit 0