Datasheet

155
32133D–11/2011
UC3D
• AGC: Automatic Gain Control
For test purposes
• GAIN: Gain
0 Oscillator is used with gain G0 (XIN from 0.4 MHz to 12.0 MHz)
1 Oscillator is used with gain G1 (XIN from 12.0 MHz to 16.0 MHz)
2 Oscillator is used with gain G2 (XIN from 16.0 MHz to 20.0 MHz)
3 Oscillator is used with gain G3 (Use in noisy environment to get better margin with respect to e.g. jitter)
• MODE: Oscillator Mode
0: External clock connected on XIN, XOUT can be used as an I/O (no crystal)
1: Crystal is connected to XIN/XOUT
Note that this register is protected by a lock. To write to this register the UNLOCK register has to be written first. Please
refer to the UNLOCK register description for details.
13 512 4.5 ms
14 1024 9 ms
15 Reserved Reserved
Table 13-5. Startup time for oscillators 0
STARTUP
Number of RC oscillator clock
cycle
Approximative Equivalent time
(RCSYS = 115 kHz)