IDT82V2048 データシートの表示（PDF） - Integrated Device Technology

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IDT82V2048

OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT

Integrated Device Technology 

IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT

INDUSTRIAL TEMPERATURE RANGES

DESCRIPTION:

The IDT82V2048 is a single chip, 8-channel T1/E1 short haul PCM

transceiver with a reference clock of 1.544MHz (T1) or 2.048MHz (E1).

It contains 8 transmitters and 8 receivers.

Both the receivers and transmitters can be programmed to work

either in single rail mode or dual rail mode. AMI or HDB3/B8ZS encoder/

decoder is selectable in single rail mode. Pre-encoded transmit data in

NRZ format can be accepted when the device is configured in dual rail

mode. The receivers perform clock and data recovery by using

integrated digital phase-locked loop. As an option, the raw sliced data

(no retiming) can be output on the receive data pins. Transmit

equalization is implemented with low-impedance output drivers that

provide shaped waveforms to the transformer, guaranteeing template

conformance.

A jitter attenuator is integrated in the IDT82V2048 and can be

switched into either the transmit path or the receive path for all chan-

nels. The jitter attenuation performance meets ETSI CTR12/13, ITU

G.736, G.742, G.823, and AT&T Pub 62411 specifications.

The IDT82V2048 offers hardware control mode and software control

mode. Software control mode works with either serial host interface or

parallel host interface. The latter works via an Intel/Motorola compatible

8-bit parallel interface for both multiplexed or non-multiplexed applica-

tions. Hardware control mode uses multiplexed pins to select differ-

ent operation modes when the host interface is not available to the

device.

The IDT82V2048 also provides loopback and JTAG boundary scan

testing functions. Using the integrated monitoring function, the

IDT82V2048 can be configured as a 7-channel transceiver with non-in-

trusive protected monitoring points.

The IDT82V2048 can be used for SDH/SONET multiplexers, central

office or PBX, digital access cross connects, digital radio base stations,

remote wireless modules and microwave transmission systems.

PIN CONFIGURATIONS

BPVI4/TDN4 109

RCLK4 110

RD4/RDP4 111

CV4/RDN4 112

LOS4 113

OE 114

CLKE 115

VDDT4 116

TTIP4 117

TRING4 118

GNDT4 119

RTIP4 120

RRING4 121

GNDT5 122

TRING5 123

TTIP5 124

VDDT5 125

RRING5 126

RTIP5 127

VDDT6 128

TTIP6 129

TRING6 130

GNDT6 131

RTIP6 132

RRING6 133

GNDT7 134

TRING7 135

TTIP7 136

VDDT7 137

RRING7 138

RTIP7 139

LOS7 140

CV7/RDN7 141

RD7/RDP7 142

RCLK7 143

BPVI7/TDN7 144

IDT

82V2048DA

Figure - 2a. TQFP Package Pin Assignment

2

72 BPVI3/TDN3

71 RCLK3

70 RD3/RDP3

69 CV3/RDN3

68 LOS3

67 RTIP3

66 RRING3

65 VDDT3

64 TTIP3

63 TRING3

62 GNDT3

61 RRING2

60 RTIP2

59 GNDT2

58 TRING2

57 TTIP2

56 VDDT2

55 RTIP1

54 RRING1

53 VDDT1

52 TTIP1

51 TRING1

50 GNDT1

49 RRING0

48 RTIP0

47 GNDT0

46 TRING0

45 TTIP0

44 VDDT0

43 MODE1

42 LOS0

41 CV0/RDN0

40 RD0/RDP0

39 RCLK0

38 BPVI0/TDN0

37 TD0/TDP0

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