OCTAL T1/E1 SHORT HAUL
LINE INTERFACE UNIT
IDT82V2048
FEATURES
♦
Fully integrated octal T1/E1 short haul line interface which
supports 100Ω T1 twisted pair, 120Ω E1 twisted pair and 75Ω
E1 coaxial applications
Selectable single rail or dual rail mode and AMI or HDB3/B8ZS
line encoder/decoder
Built-in transmit pre-equalization meets G.703 & T1.102
Selectable transmit/receive jitter attenuator meets ETSI CTR12/
13, ITU G.736, G.742,G.823 and AT&T Pub 62411 specifications
SONET/SDH optimized jitter attenuator meets ITU G.783 map-
ping jitter specification
Digital/analog LOS detector meets ITU G.775, ETS 300 233 and
T1.231
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ITU G.772 non-intrusive monitoring for in-service testing for
any one of channel1 to channel7
Low impedance transmit drivers with tri-state
Selectable hardware and parallel/serial host interface
Local, remote and inband loopback test functions
Hitless Protection Switching (HPS) for 1 to 1 protection with-
out relays
JTAG boundary scan for board test
3.3V supply with 5V tolerant I/O
Low power consumption
Operating Temperature Range: -40°C to +85°C
Available in 144-pin Thin Quad Flat Pack (TQFP_144_DA) and
160-pin Plastic Ball Grid Array (PBGA) packages
FUNCTIONAL BLOCK DIAGRAM
LOS
Detector
RTIPn
RRINGn
Analog
Loopback
TTIPn
TRINGn
Peak
Detector
Line
Driver
Slicer
CLK&Data
Recovery
(DPLL)
Digital
Loopback
Waveform
Shaper
Transmit
All Ones
G.772
Monitor
Clock
Generator
One of Eight Identical Channels
LOSn
Jitter
Attenuator
B8ZS/
HDB3/AMI
Decoder
Remote
Loopback
Jitter
Attenuator
B8ZS/
HDB3/AMI
Encoder
IBLC
Generator
IBLC
Detector
AIS
Detector
TCLKn
TDn/TDPn
BPVIn/TDNn
RCLKn
RDn/RDPn
CVn/RDNn
Control Interface
Register
File
JTAG TAP
VDD IO
VDDT
VDDD
VDDA
OE
CLKE
MODE[2:0]
CS/JAS
TS2/SCLK/ALE/AS
TS1/RD/R/W
TS0/SDI/WR/DS
SD0/RDY/ACK
INT
LP/D/AD[7:0]
MC/A[4:0]
MCLK
Figure - 1. Block Diagram
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
TRST
TCK
TMS
TDI
TDO
INDUSTRIAL TEMPERATURE RANGES
1
©
2003 Integrated Device Technology, Inc.
DECEMBER 2003
DSC-6037/11
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
TD4/TDP4
TCLK4
LOS5
CV5/RDN5
RD5/RDP5
RCLK5
BPVI5/TDN5
TD5/TDP5
TCLK5
TDI
TDO
TCK
TMS
TRST
IC
IC
VDDIO
GNDIO
VDDA
GNDA
MODE0/CODE
CS/JAS
TS2/SCLK/ALE/AS
TS1/RD/R/W
TS0/SDI/WR/DS
SDO/RDY/ACK
INT
TCLK2
TD2/TDP2
BPVI2/TDN2
RCLK2
RD2/RDP2
CV2/RDN2
LOS2
TCLK3
TD3/TDP3
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
TD7/TDP7
TCLK7
LOS6
CV6/RDN6
RD6/RDP6
RCLK6
BPVI6/TDN6
TD6/TDP6
TCLK6
MCLK
MODE2
A4
MC3/A3
MC2/A2
MC1/A1
MC0/A0
VDDIO
GNDIO
VDDD
GNDD
LP0/D0/AD0
LP1/D1/AD1
LP2/D2/AD2
LP3/D3/AD3
LP4/D4/AD4
LP5/D5/AD5
LP6/D6/AD6
LP7/D7/AD7
TCLK1
TD1/TDP1
BPVI1/TDN1
RCLK1
RD1/RDP1
CV1/RDN1
LOS1
TCLK0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
BPVI4/TDN4
RCLK4
RD4/RDP4
CV4/RDN4
LOS4
OE
CLKE
VDDT4
TTIP4
TRING4
GNDT4
RTIP4
RRING4
GNDT5
TRING5
TTIP5
VDDT5
RRING5
RTIP5
VDDT6
TTIP6
TRING6
GNDT6
RTIP6
RRING6
GNDT7
TRING7
TTIP7
VDDT7
RRING7
RTIP7
LOS7
CV7/RDN7
RD7/RDP7
RCLK7
BPVI7/TDN7
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
IDT
82V2048DA
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
BPVI3/TDN3
RCLK3
RD3/RDP3
CV3/RDN3
LOS3
RTIP3
RRING3
VDDT3
TTIP3
TRING3
GNDT3
RRING2
RTIP2
GNDT2
TRING2
TTIP2
VDDT2
RTIP1
RRING1
VDDT1
TTIP1
TRING1
GNDT1
RRING0
RTIP0
GNDT0
TRING0
TTIP0
VDDT0
MODE1
LOS0
CV0/RDN0
RD0/RDP0
RCLK0
BPVI0/TDN0
TD0/TDP0
Figure - 2a. TQFP Package Pin Assignment
2
IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT
INDUSTRIAL TEMPERATURE RANGES
PIN CONFIGURATIONS (CONTINUED)
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RCLK
7
RDP
7
RDN
7
VDDT
7
TRING
7
B
TCLK
7
TDP
7
TDN
7
VDDT
7
TTIP
7
C
RCLK
6
RDP
6
RDN
6
VDDT
6
TRING
6
D
TCLK
6
TDP
6
TDN
6
VDDT
6
TTIP
6
E
MCLK
MODE
2
LOS
6
LOS
7
F
MC
1
MC
2
MC
3
A4
G
H
J
LP
6
LP
5
LP
4
LP
3
K
LP
7
MODE
1
LOS
1
LOS
0
L
TCLK
1
TDP
1
TDN
1
M
RCLK
1
RDP
1
RDN
1
N
TCLK
0
TDP
0
TDN
0
P
RCLK
0
RDP
0
RDN
0
VDDT
0
TRING
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
VDDIO VDDD
LP
0
MC
0
LP
2
LP
1
GNDIO GNDD
VDDT VDDT VDDT
1
1
0
TTIP
1
TRING
1
TTIP
0
GNDT GNDT GNDT GNDT
7
7
6
6
RTIP RRING
7
7
RTIP RRING
4
4
RTIP
6
RTIP
5
RRING
6
RRING
5
GNDT GNDT GNDT GNDT
1
1
0
0
IDT
82V2048BB
(Bottom View)
RRING RTIP
1
1
RRING RTIP
2
2
RRING
0
RRING
3
RTIP
0
RTIP
3
GNDT GNDT GNDT GNDT
4
4
5
5
TRING
4
VDDT
4
RDN
4
RDP
4
RCLK
4
A
TTIP
4
VDDT
4
TDN
4
TDP
4
TCLK
4
B
TRING
5
VDDT
5
RDN
5
RDP
5
RCLK
5
C
TTIP
5
VDDT
5
TDN
5
TDP
5
TCLK
5
D
LOS
4
LOS
5
CLKE
OE
E
TMS
TDI
TDO
TCK
F
GNDIO GNDA
TRST
IC
MODE
0
IC
CS
TS
2
TS
1
TS
0
J
LOS
3
LOS
2
INT
SDO
K
GNDT GNDT GNDT GNDT
2
2
3
3
TTIP
2
TRING
2
TTIP
3
TRING
3
VDDT
3
RDN
3
RDP
3
RCLK
3
P
VDDT VDDT VDDT
2
2
3
TDN
2
TDP
2
TCLK
2
L
RDN
2
RDP
2
RCLK
2
M
TDN
3
TDP
3
TCLK
3
N
VDDIO VDDA
G
H
Figure - 2b. PBGA160 Package Pin Assignment
3
IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT
INDUSTRIAL TEMPERATURE RANGES
PIN DESCRIPTION
Name
TTIP0
TTIP1
TTIP2
TTIP3
TTIP4
TTIP5
TTIP6
TTIP7
TRING0
TRING1
TRING2
TRING3
TRING4
TRING5
TRING6
TRING7
RTIP0
RTIP1
RTIP2
RTIP3
RTIP4
RTIP5
RTIP6
RTIP7
RRING0
RRING1
RRING2
RRING3
RRING4
RRING5
RRING6
RRING7
1
Type
Pin No.
QFP144 BGA160
45
52
57
64
117
124
129
136
46
51
58
63
118
123
130
135
48
55
60
67
120
127
132
139
49
54
61
66
121
126
133
138
N5
L5
L10
N10
B10
D10
D5
B5
P5
M5
M10
P10
A10
C10
C5
A5
P7
M7
M8
P8
A8
C8
C7
A7
N7
L7
L8
N8
B8
D8
D7
B7
Description
Transmit and Receive Line Interface
TTIPn/TRINGn: Transmit Bipolar Tip/Ring for Channel 0~7
These pins are the differential line driver outputs. They will be in high impedance state if pin OE
is low or the corresponding pin TCLKn is low (pin OE is globe control, while pin TCLKn is per-
channel control). In host mode, each pin can be in high impedance state by programming a “1” to
the corresponding bit in Register
OE
1
.
Analog
Output
RTIPn/RRINGn: Receive Bipolar Tip/Ring for Channel 0~7
These pins are the differential line receiver inputs.
Analog
Input
Register name is indicated by bold capital letter.
OE:
Output Enable Register.
4
IDT82V2048 OCTAL T1/E1 SHORT HAUL LINE INTERFACE UNIT
INDUSTRIAL TEMPERATURE RANGES
PIN DESCRIPTION (CONTINUED)
Name
TD0/TDP0
TD1/TDP1
TD2/TDP2
TD3/TDP3
TD4/TDP4
TD5/TDP5
TD6/TDP6
TD7/TDP7
I
BPVI0/TDN0
BPVI1/TDN1
BPVI2/TDN2
BPVI3/TDN3
BPVI4/TDN4
BPVI5/TDN5
BPVI6/TDN6
BPVI7/TDN7
38
31
79
72
109
102
7
144
N3
L3
L12
N12
B12
D12
D3
B3
Type
Pin No.
QFP144 BGA160
N2
37
L2
30
L13
80
N13
73
B13
108
D13
101
D2
8
B2
1
Description
TDn: Transmit Data for Channel 0~7
When the device is in Single Rail Mode, the NRZ data to be transmitted is input on this pin. Data on
TDn is sampled into the device on falling edges of TCLKn, and encoded by AMI or HDB3/B8ZS line
code rules before being transmitted to the line.
BPVIn: Bipolar Violation Insertion for Channel 0~7
Bipolar violation insertion is available in Single Rail Mode 2 (see
table-1)
with AMI enabled. A low-to-
high transition on this pin will make the next logic one to be transmitted on TDn the same polarity as the
previous pulse, and violate the AMI rule. This is for testing.
TDPn/TDNn: Positive/Negative Transmit Data for Channel 0~7
When the device is in Dual Rail Mode, the NRZ data to be transmitted for positive/negative pulse is input
on this pin. Data on TDPn/TDNn are active high and sampled on falling edge of TCLKn. The line code in
dual rail mode is as the follows :
TDPn
TDNn
Output Pulse
0
0
Space
0
1
Negative Pulse
1
0
Positive Pulse
1
1
Space
Pulling pin TDNn high for more than 16 consecutive TCLK clock cycles will configure the corresponding
channel into single rail mode 1 (see
table-1 on Page14).
TCLKn: Transmit Clock for Channel 0~7
The clock of 1.544 MHz (for T1 mode) or 2.048 MHz (for E1 mode) for transmit is input on this pin. The
transmit data at TDn/TDPn or TDNn is sampled into the device on falling edge of TCLKn.
Pulling TCLKn high for more than 16 MCLK cycles, the corresponding transmitter is set in Transmit All
One (TAO) state (when MCLK is clocked). In TAO state, the TAO generator adopts MCLK as the time
reference.
If TCLKn is Low, the corresponding transmit channel is set into power down state, while driver output
ports become high impedance.
Different combinations of TCLKn and MCLK result in different transmit mode. It is summarized as the
follows:
MCLK
TCLKn
Transmitter Mode
Clocked
Clocked
Normal operation
Clocked
High (
≥
16 MCLK) Transmit All One (TAO) signals to the line side in the
corresponding transmit channel.
Clocked
Low (
≥
64 MCLK) Corresponding transmit channel is set into power down state.
High/Low
TCLK1 is clocked TCLKn is clocked Normal operation
TCLKn is high
Transmit All One (TAO) signals to the line side
in the corresponding transmit channel.
(
≥
16 TCLK1)
TCLKn is low
Corresponding transmit channel is set into
power down state.
(
≥
64 TCLK1)
The receive path is not affected by the status of TCLK1. When
MCLK is high, all receive paths just slice the incoming data stream.
When MCLK is low, all the receive paths are powered down.
High/Low
TCLK1 is not
All eight transmitters (TTIPn & TRINGn) will be in high impedance
available
state.
(High/Low)
TCLK0
TCLK1
TCLK2
TCLK3
TCLK4
TCLK5
TCLK6
TCLK7
I
36
29
81
74
107
100
9
2
N1
L1
L14
N14
B14
D14
D1
B1
5
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