AD9879BS View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

AD9879BS

Mixed-Signal Front End Set-Top Box, Cable Modem

Analog Devices 

AD9879

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

DNC 1

DRGND 2

DRVDD 3

IF(11) 4

IF(10) 5

IF(9) 6

IF(8) 7

IF(7) 8

IF(6) 9

IF(5) 10

IF(4) 11

IF(3) 12

IF(2) 13

IF(1) 14

IF(0) 15

RXIQ(3) 16

RXIQ(2) 17

RXIQ(1) 18

RXIQ(0) 19

RXSYNC 20

DRGND 21

DRVDD 22

MCLK 23

DVDD 24

DGND 25

TXSYNC 26

TXIQ(5) 27

TXIQ(4) 28

TXIQ(3) 29

TXIQ(2) 30

PIN 1

AD9879

TOP VIEW

(Pins Down)

80 DNC

79 I+

78 I–

77 DNC

76 DNC

75 DNC

74 AGNDIQ

73 AVDDIQ

72 DRVDD

71 REFCLK

70 DRGND

69 DGND Σ-∆

68 Σ-∆_OUT

67 FLAG1

66 DVDD Σ-∆

65 CA_EN

64 CA_DATA

63 CA_CLK

62 DVDDOSC

61 OSCIN

60 XTAL

59 DGNDOSC

58 AGNDPLL

57 PLLFILT

56 AVDDPLL

55 DVDDPLL

54 DGNDPLL

53 AVDDTX

52 TX+

51 TX–

Table 3. Pin Function Descriptions

Pin No.

Mnemonic

1, 35, 75 to 77, 80

DNC

2, 21, 70

DRGND

3, 22, 72

DRVDD

4 to 15

IF[11:0]

16 to 19

RXIQ[3:0]

20

RXSYNC

23

MCLK

24, 33, 38

DVDD

25, 34, 39, 40

DGND

26

TXSYNC

27 to 32

TXIQ[5:0]

36

PROFILE

37

RESET

Figure 2. Pin Configuration

Description

Do Not Connect. Pins are not bonded to die.

Pin Driver Digital Ground.

Pin Driver Digital 3.3 V Supply.

12-Bit ADC Digital Output.

Muxed I and Q ADCs Output.

Sync Output, IF, I and Q ADCs.

Master Clock Output.

Digital 3.3 V Supply.

Digital Ground.

Sync Input for Transmit Port.

Digital Input for Transmit Port.

Profile Selection Inputs.

Chip Reset Input (Active Low).

Rev. A | Page 8 of 32

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