IDT82V2044 Просмотр технического описания (PDF) - Integrated Device Technology
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IDT82V2044 Datasheet PDF : 61 Pages
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IDT82V2044
DESCRIPTION
The IDT82V2044 is a single chip, 4-channel T1/E1 short haul PCM
transceiver with a reference clock of 1.544 MHz (T1) or 2.048 MHz (E1).
The IDT82V2044 contains 4 transmitters and 4 receivers.
All the receivers and transmitters can be programmed to work either
in Single Rail mode or Dual Rail mode. B8ZS/HDB3 or AMI 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 inte-
grated 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 IDT82V2044 and can be
switched into either the transmit path or the receive path for all channels.
The jitter attenuation performance meets ETSI CTR12/13, ITU G.736,
G.742, G.823, and AT&T Pub 62411 specifications.
QUAD T1/E1 SHORT HAUL LINE INTERFACE UNIT
The IDT82V2044 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 different
operation modes when the host interface is not available to the device.
The IDT82V2044 also provides loopback and JTAG boundary scan
testing functions. Using the integrated monitoring function, the
IDT82V2044 can be configured as a 4-channel transceiver with non-
intrusive protected monitoring points.
The IDT82V2044 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
GNDIO
109
DNC
110
DNC
111
DNC
112
DNC
113
OE
114
CLKE
115
VDDT
116
DNC
117
DNC
118
GNDT
119
DNC
120
DNC
121
GNDT
122
DNC
123
DNC
124
VDDT
125
DNC
126
DNC
127
VDDT
128
DNC
129
DNC
130
GNDT
131
DNC
132
DNC
133
GNDT
134
DNC
135
DNC
136
VDDT
137
DNC
138
DNC
139
DNC
140
DNC
141
DNC
142
DNC
143
GNDIO
144
IDT82V2044
(Top View)
72
BPVI3/TDN3
71
RCLK3
70
RD3/RDP3
69
CV3/RDN3
68
LOS3
67
RTIP3
66
RRING3
65
VDDT
64
TTIP3
63
TRING3
62
GNDT
61
RRING2
60
RTIP2
59
GNDT
58
TRING2
57
TTIP2
56
VDDT
55
RTIP1
54
RRING1
53
VDDT
52
TTIP1
51
TRING1
50
GNDT
49
RRING0
48
RTIP0
47
GNDT
46
TRING0
45
TTIP0
44
VDDT
43
MODE1
42
LOS0
41
CV0/RDN0
40
RD0/RDP0
39
RCLK0
38
BPVI0/TDN0
37
TD0/TDP0
Description
Figure-2 TQFP144 Package Pin Assignment
2
September 22, 2005
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