Rainbow Electronics ATA5746 - Manual (Page 21)

21
4596A–RKE–05/06
ATA5745/ATA5746 [Preliminary]
Figure 5-2. Standby Mode (CLK_OUT_CTRL0 or CLK_OUT_CTRL1 = 1)
5.3 Active Mode
The Active mode is enabled by setting the level on pin RX to high. In Active mode, the RX signal
path is enabled and if a valid signal is present it will be transferred to the connected
microcontroller.
During T
Startup_PLL
the PLL is enabled and starts up. If the PLL is locked, the signal processing
circuit starts up (T
Startup_Sig_Proc
). After the start-up time, all circuits are in stable condition and
ready to receive. The duration of the start-up sequence depends on the selected bit rate range.
Figure 5-3. Active Mode
CLK_OUT
ENABLE
Standby Mode
t
XTO_Startup
Table 5-3. Active Mode
RX ENABLE Function
1 1 Active mode
DATA_OUT valid
t
Startup_PLL
t
Startup_Sig_Proc
I
Startup_PLL
I
Active
I
Active
I
Standby
Startup
CLK_OUT
RX
DATA_OUT
ENABLE
Standby Mode Active Mode