SNAS669E September 2015 – April 2018 LMK03318
PRODUCTION DATA.
The OSCCTL1 register provides control over input reference clock features.
Bit # | Field | Type | Reset | EEPROM | Description |
---|---|---|---|---|---|
[7] | DETECT_BYP | RW | 0 | Y | Signal Detector Bypass. When DETECT_BYP is 1 the output of the Signal Detector's, both Primary and Secondary are ingored and the inputs are always considered to be valid by the PLL control state machines. The DETECT_BYP bit has no effect on the Interrupt register or STATUS output's. |
[6] | RSRVD | - | - | N | Reserved. |
[5] | TERM2GND_SEC | RW | 0 | Y | Differential Termination to GND Control for Secondary Input. When TERM2GND_SEC is 1 an internal 50 Ω termination to GND is selected on the Secondary input in differential mode. |
[4] | TERM2GND_PRI | RW | 0 | Y | Differential Termination to GND Control for Primary Input. When TERM2GND_PRI is 1 an internal 50 Ω termination to GND is selected on the Primary input in differential mode. |
[3] | DIFFTERM_SEC | RW | 0 | Y | Differential Termination Control for Secondary Input. When DIFFTERM_SEC is 1 an internal 100 Ω termination is selected on the Secondary input in differential mode. |
[2] | DIFFTERM_PRI | RW | 1 | Y | Differential Termination Control for Primary Input. When DIFFTERM_PRI is 1 an internal 100 Ω termination is selected on the Primary input in differential mode. |
[1] | AC_MODE_SEC | RW | 1 | Y | AC Coupling Mode for Secondary Input. When AC_MODE_SEC is 1, this enables the internal input biasing to support an externally AC coupled input signal on the SECREF inputs. When AC_MODE_SEC is 0, the internal input bias is not used. |
[0] | AC_MODE_PRI | RW | 0 | Y | AC Coupling Mode for Primary Input. When AC_MODE_PRI is 1, this enables the internal input biasing to support an externally AC coupled input signal on the PRIREF inputs. When AC_MODE_PRI is 0, the internal input bias is not used. |