XRT85L61

BITS (BUILDING INTEGRATED TIMING SUPPLY) CLOCK EXTRACTOR

REV. 1.0.1

8

1.1.1

64 kHz + 8 kHz Clock Extraction

The input data is shown in Figure 3. The 64 kHz clock signal consist of AMI code with 8 kHz Bipolar Violation.

Both the 64 kHz and 8 kHz components are extracted from the composite received signal and presented at the

64 kHz and 8 kHz output pins.

1.1.2

64 kHz + 8 kHz + 400 Hz Clock Extraction

Figure 4 shows the input data for this mode. The 64 kHz clock signal consist of AMI code with 8 kHz Bipolar

Violation removed every 400 Hz. The 64 kHz, 8 kHz and 400 Hz components are extracted from the composite

received signal and presented at the RClk, 8 kHz and 400 Hz output pins.

input signals have errors.

Load Impedance

110

Ω resistive

Transmission Media

Symmetric Pair Cable

Pulse Width (FWHM)

< 7.8 ± 0.78

µs

Amplitude

< 1 V ± 0.1 V

V

V

V

V

RTIP/

RRING

64kHz

Clock

RPOS

RNEG

8kHz Clock

RClk_LCV

8kH_LCV

Missing Pulse

Missing Pulse or Wrong Polarity Pulse

Missing Pulse

Missing Pulse

Missing Pulse

Not Valid Violation

Not Valid Violation

Missing Pulse or No Violation Bit

If Pulse Missing at RTIP/RRING

out of sync