Cirrus-logic CS61884 Manual de usuario descargar pdf (Pagina 58)

CS61884

58 DS485F3

110

100

1K 10K

Attenuation in dB

Frequency in Hz

+ 0.5

1.4K20 40040

+ 10

- 10

- 20

- 30

- 50

- 40

- 60

- 19.5

- 6

- 70

100K

AT&T 62411

Minimum Attenuation

ITU G.736

TYP. T1 @ 3.78Hz CF

TYP. E1 @ 1.25 Hz CF

TYP. E1 @ 2.5 Hz CF

TYP. T1 @ 7.56Hz CF

AT&T 62411

Maximum Attenuation

Figure 19. Jitter Transfer Characteristic vs. G.736, TBR 12/13 & AT&T 62411

PEAK TO PEAK JITTER (UI)

FREQUENCY IN Hz

110 1k100 100k1.8 4.9 20 300 10k2.4k 18k

100

1.5

1000

138

300

AT&T 62411

ITU G.823

TYP. E1 Performance

TYP. T1 Performance

Figure 20. Jitter Tolerance Characteristic vs. G.823 & AT&T 62411

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 71 72

Features 1
Description 1
TABLE OF CONTENTS 2
LIST OF FIGURES 5
LIST OF TABLES 6
1. PINOUT - LQFP 7
2. PINOUT - LFBGA 8
3. PIN DESCRIPTIONS 9
3.1 Power Supplies 9
3.2 Control 10
3.3 Address Inputs/Loopbacks 14
3.4 Cable Select 15
3.6 Digital Rx/Tx Data I/O 16
3.7 Analog RX/TX Data I/O 19
3.9 Miscellaneous 21
3.8 JTAG Test Interface 21
4. OPERATION 22
5. POWER-UP 22
6. MASTER CLOCK 22
7. G.772 MONITORING 22
DS485F3 23 23
9. TRANSMITTER 24
9.1 Bipolar Mode 25
9.2 Unipolar Mode 25
9.3 RZ Mode 25
9.5 Transmit All Ones (TAOS) 25
26 DS485F3 26
10.3 RZ Output Mode 27
10.5 Loss-of-Signal (LOS) 27
11. JITTER ATTENUATOR 28
12. OPERATIONAL SUMMARY 29
12.1 Loopbacks 29
12.2 Analog Loopback 29
12.3 Digital Loopback 30
12.4 Remote Loopback 30
DS485F3 31 31
13. HOST MODE 32
13.1 SOFTWARE RESET 32
13.2 Serial Port Operation 32
13.3 Parallel Port Operation 33
13.4 Register Set 34
TAOS Enable Register (03h) 35
DFM Status Register (05h) 35
(Continued) 37
14.33 Status Registers 42
15. ARBITRARY WAVEFORM 43
GENERATOR 43
44 DS485F3 44
16. JTAG SUPPORT 45
16.1 TAP Controller 45
16.1.1 JTAG Reset 45
16.1.2 Test-Logic-Reset 45
16.1.3 Run-Test-Idle 45
46 DS485F3 46
18. APPLICATIONS 51
18.4 Line Protection 53
19.3 Digital Characteristics 55
58 DS485F3 58
RPOS/RNEG 60
CLKE = 1 60
CLKE = 0 60
DS485F3 63 63
64 DS485F3 64
66 DS485F3 66
DS485F3 67 67
DS485F3 69 69
21. LFBGA PACKAGE DIMENSIONS 70
144L LQFP PACKAGE DRAWING 71
23. ORDERING INFORMATION 72
25. REVISION HISTORY 72

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Cirrus-logic CS61884 Manual de usuario Pagina 58

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