Microchip Technology SA5 Series, Руководство пользователя

Страница: 36 / 63

TABLE 4-9: ALARM BITS 31-16
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
— — — — — — — — — — — — —
Disciplining Range W
arning
No PPS Input
Temperature W
arning
TABLE 4-10: ALARM BITS 15-0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
— — — — — — — — —
Incompatible Firmware
Heater Fault
No External Oscillator
Acquisition Failed
Flash Fault
PLL Fault
FPGA Fault
TABLE 4-11: ALARM DESCRIPTIONS
Bit Decimal Alarm Description
0 1 FPGA Fault Hardware fault related to the internal FPGA.
1 2 PLL Fault Hardware fault related to the internal PLL circuit.
2 4 Flash Fault Hardware fault related to flash memory.
3 8 Acquisition Failed The most recent attempt to acquire lock failed.
4 16
No External
Oscillator
An external oscillator was expected and not detected.
5 32 Cell Heater Fault Hardware failure within the Cell Heater.
6 64
Incompatible
Firmware
The loaded firmware is not compatible with the unit’s
hardware.
16 65536
Temperature
Warning
The clock is unable to maintain a stable internal tem-
perature and performance is likely degraded. This
alarm is only asserted when the
Locked
parameter
is 1.
17 131072 No PPS Input
Disciplining is enabled but no 1PPS input is detected
on the selected input.
18 262144
Disciplining Range
Warning
Disciplining is enabled but the digital tuning adjust-
ment needed to discipline the clock is outside the
range of
DigitalTuning
. The user should issue a
latch
command when this alarm occurs.
MAC-SA5X User’s Guide
DS50002938A-page 36

2019 Microchip Technology Inc.