CS61881-IB 데이터 시트보기 (PDF) - Cirrus Logic

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CS61881-IB

Octal E1 Analog Front End

Cirrus Logic 

CS61881

SWITCHING CHARACTERISTICS (TA = -40°C to 85°C; TVCC, RVCC = 3.3 V ±5%;

GND = 0 V; Inputs: Logic 0 = 0 V, Logic 1 = RVCC; See Figures 1, 2, & 3)

Parameter

Symbol Min

Typ

Max

TCLK Frequency

2.048

Transmit Pulse Width (NRZ Mode)

219

244

269

TCLK Duty Cycle (NRZ Mode)

tTCH/tTCPW

10

-

90

TPOS/TNEG to TCLK Falling Setup Time (NRZ Mode)

tsu2

25

-

-

TCLK Falling to TPOS/TNEG Hold Time (NRZ Mode)

th2

25

-

-

TCLK Pulse Width (RZ Mode)

236

252

TXOE Asserted Low to TX Driver Hi-Z

-

-

1

TCLK Held Low to Driver Hi-Z

8

15

Rise Time, All Digital Outputs

(Note 13)

tr

-

-

85

Fall Time, All Digital Outputs

(Note 13)

tf

-

-

85

RPOS/RNEG Pulse Width

tRPW

200

244

300

RRTIP/RRING input to RPOS/RNEG output

tRXD

-

85

-

RPOS/RNEG Output to RCLK Output

-

-

5

Units

MHz

nS

%

ns

ns

nS

µS

µS

ns

ns

ns

ns

ns

Notes: 13. Output load capacitance = 50 pF.

DS451PP3

7

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