DS3154 datasheet(39/60 Pages) DALLAS

39 / 60 page

DS3151/DS3152/DS3153/DS3154 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs

39 of 60

Figure 13-2. Receiver Framer Interface Timing Diagram

Table 13-D. Receiver Input Characteristics—DS3 and STS-1 Modes

(VDD = 3.3V

±5%, TA = -40°C to +85°C.)

PARAMETER

MIN

TYP

MAX

UNITS

Receive Sensitivity (Length of Cable)

900

1200

Signal-to-Noise Ratio, Interfering Signal Test (Notes 13, 14)

Input Pulse Amplitude, RMON = 0 (Notes 14, 15)

1000

mVpk

Input Pulse Amplitude, RMON = 1 (Note 14, 15)

200

mVpk

Analog LOS Declare, RMON = 0 (Note 16)

-24

Analog LOS Clear, RMON = 0 (Note 16)

-17

Analog LOS Declare, RMON = 1 (Note 16)

-38

Analog LOS Clear, RMON = 1 (Note 16)

-29

Intrinsic Jitter Generation (Note 14)

0.03

UIP-P

Table 13-E. Receiver Input Characteristics—E3 Mode

(VDD = 3.3V

±5%, TA = -40°C to +85°C.)

PARAMETER

MIN

TYP

MAX

UNITS

Receive Sensitivity (Length of Cable)

900

1200

Signal-to-Noise Ratio, Interfering Signal Test (Notes 13, 14)

Input Pulse Amplitude, RMON = 0 (Notes 14, 15)

1300

mVpk

Input Pulse Amplitude, RMON = 1 (Notes 14, 15)

260

mVpk

Analog LOS Declare, RMON = 0 (Note 16)

-24

Analog LOS Clear, RMON = 0 (Note 16)

-17

Analog LOS Declare, RMON = 1 (Note 16)

-38

Analog LOS Clear, RMON = 1 (Note 16)

-29

Intrinsic Jitter Generation (Note 14)

0.03

UIP-P

Note 13: An interfering signal (2

15 - 1 PRBS for DS3/STS-1, 223 - 1 PRBS for E3, B3ZS/HDB3 encoded, compliant waveshape, nominal bit rate)

is added to the wanted signal. The combined signal is passed through 0 to 900ft of coaxial cable and presented to the DS3154

receiver. This spec indicates the lowest signal-to-noise ratio that results in a bit error ratio <10

-9.

Note 14: Not tested during production test.

Note 15: Measured on the line side (i.e., the BNC connector side) of the 1:2 receive transformer (Figure 1-1). During measurement, incoming

data traffic is unframed 2

15 - 1 PRBS for DS3/STS-1 and unframed 223 - 1 PRBS for E3.

Note 16: With respect to nominal 800mVpk signal for DS3/STS-1 and nominal 1000mVpk signal for E3.

RCLK (NORMAL)

RPOS/RDAT,

RNEG/RLCV

RCLK (INVERTED)

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