TTRN012G7 데이터 시트보기 (PDF) - Agere -> LSI Corporation

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TTRN012G7

TTRN012G5 (2.5 Gbits/s) and TTRN012G7 (2.5 Gbits/s and 2.7 Gbits/s) Clock Synthesizer, 16:1 Data Multiplexer

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Preliminary Data Sheet

August 2000

TTRN012G5 and TTRN012G7

Clock Synthesizer, 16:1 Data Multiplexer

Pin Information (continued)

Table 2. Pin Descriptions—155.52 Mbits/s and Related Signals (continued)

Pin

Symbol* Type† Level

Name/Description

53

CK155P

O LVPECL Clock Output (155 MHz). 155 MHz differential clock output.

52

CK155N

43

PHADJ1

Iu CMOS Phase Adjust. Adjusts phase of CK155P/N in 90 degree steps.

44

PHADJ0

42

CLKMODE

Iu

CMOS Clock Mode Select. Selects clockless data transfer mode.

0 = clockless transfer

1 or no connection = contra clock

57

PARITYP

I LVPECL Parity Input over Data (D[15:0]).

56

PARITYN

50

VALIDP

O LVPECL Parity Check Output. Validates the input of PARITYP/N.

49

VALIDN

0 = parity check does not agree with input PARITYP/N pins

1 = parity check agrees

33

LCKLOSSN O CMOS Loss of Lock (Active-Low). 0 = PLL out of lock.

41

EXTADJN

Iu CMOS External Automatic Phase Adjust (Active-Low). Adjusts the

155 MHz clock output, CK155P/N.

0 = adjust phase of 155 MHz clock to data upon next transition

of the D0P/N input signal

1 = no adjust

Must be held low until the first rising transition of D0P/N.

47

MONAPAP O LVPECL Monitor Automatic Phase Adjust. Indicates when a phase

46

MONAPAN

adjustment in the automatic phase adjust block occurs.

105

REFCLKP

I LVPECL Reference Clock Input (155 MHz). This clock is required.

106

REFCLKN

When applying the REFCLKP/N, set the REFCLKP/N to one of

the following frequencies:

s 155.52 MHz if using the TRCV012G5, or the TRCV012G7 at

the 0C-48/STM-16 rate of 2.48832 GHz.

s 166.62 MHz if using the TRCV012G7 at the RS FEC

0C-48/STM-16 rate of 2.66606 GHz.

112

LFP

I Analog Loop Filter PLL. Connect LFP to VCP, and LFN to VCN.

111

LFN

113

VCP

I Analog VCO Control. Connect VCP to LFP, and VCN to LFN.

110

VCN

* Differential pairs are indicated by P and N suffixes. For nondifferential pins, N at the end of the symbol name designates active-low.

† I = input, O = output. Iu indicates an internal pull-up resistor on this pin.

Lucent Technologies Inc.

7

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