S i5540

Preliminary Rev. 0.31

7

Table 3. AC Characteristics (TXCLK16OUT, TXCLK16IN, TXCLKOUT, TXDIN, TXDOUT)

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

TXCLKOUT Frequency

—

9.95

10.7

GHz

TXCLKOUT Duty Cycle

tch/tcp, Figure 2

45

—

55

%

Output Rise Time

(TXCLKOUT, TXDOUT)

Figure 3

—

25

—

ps

Output Fall Time

(TXCLKOUT, TXDOUT)

Figure 3

—

25

—

ps

TXCLKOUT Setup to TXDOUT

Figure 2

25

—

—

ps

TXCLKOUT Hold From TXDOUT

Figure 2

25

—

—

ps

Output Return Loss

400 kHz–10 GHz

10 GHz–16 GHz

TBD

TBD

—

—

—

—

dB

dB

TXCLK16OUT Frequency

Figure 2

—

622

667

MHz

TXCLK16OUT Duty Cycle

tch/tcp, Figure 2

40

—

60

%

TXCLK16OUT Rise & Fall Times

100

—

300

ps

TXDIN Setup to TXCLK16IN

—

—

300

ps

TXDIN Hold from TXCLK16IN

—

—

300

ps

TXCLK16IN Frequency

—

622

667

MHz

TXCLK16IN Duty Cycle

tch/tcp, Figure 2

40

—

60

%

TXCLK16IN Rise & Fall Times

100

—

300

ps

Table 4. AC Characteristics (Clock Multiplier Characteristics)

Parameter

Symbol

Test Condition

Min

Typ

Max

Unit

Jitter Generation—Deterministic

PRBS-23

—

0.020

TBD

Jitter Generation—Random

—0.005

TBD

Jitter Transfer Bandwidth

BWSEL = 0

—

—

12

kHz

BWSEL = 1

—

—

50

kHz

Jitter Transfer Peaking

—

0.05

0.1

dB

Acquisition Time

Valid REFCLK

—

15

20

ms

Input Reference Clock Frequency

REFRATE = 1

—

622

667

MHz

REFRATE = 0

—

155

167

MHz

Input Reference Clock Duty

Cycle

40

—

60

%

Input Reference Clock Frequency

Tolerance

–100

—

100

ppm

Note:

Bellcore specifications: GR-1377-CORE, Issue 5, December 1998.