MT9172AN1 Zarlink, MT9172AN1 Datasheet - Page 2

• Manufacturer Part Number: MT9172AN1
• Description: Digital Network Interface Circuit 24-Pin SSOP Tube
• Manufacturer: Zarlink

Specifications of MT9172AN1

• Package: 24SSOP
• Maximum Data Rate: 160 Kbps
• Transmission Media Type: Twisted Pair
• Power Supply Type: Analog
• Typical Supply Current: 10 mA
• Typical Operating Supply Voltage: 5 V
• Minimum Operating Supply Voltage: 4.75 V
• Maximum Operating Supply Voltage: 5.25 V

with data rates up to 160 kbit/s. Both devices function identically but with the DSIC having a shorter maximum loop
reach specification. The generic "DNIC" will be used to reference both devices unless otherwise noted.
The MT9171/72 is fabricated in Zarlink’s ISO
Pin Description
4,5,
22
1
2
3
6
7
8
CDSTo/CDo
4,5,
CDSTi/CDi
Pin #
24
1
2
3
6
7
9
F0/CLD
LOUT
VBias
RegC
VRef
MS2
MS1
MS0
VSS
5,7,
28
10
2
3
4
8
9
10
11
1
2
3
4
5
6
7
8
9
MS2-MS0 Mode Select inputs (Digital). The logic levels present on these pins select the
22 PIN PDIP
F0/CLD
RegC
Name
L
V
V
OUT
Bias
Ref
22
21
20
19
18
17
16
15
14
13
12
Line Out. Transmit Signal output (Analog). Referenced to V
Internal Bias Voltage output. Connect via 0.33 µF decoupling capacitor to V
Internal Reference Voltage output. Connect via 0.33 µF decoupling capacitor to
V
various operating modes for a particular application. See Table 1 for the
operating modes.
Regulator Control output (Digital). A 512 kHz clock used for switch mode power
supplies. Unused in MAS/MOD mode and should be left open circuit.
Frame Pulse/C-Channel Load (Digital). In DN mode a 244 ns wide negative
pulse input for the MASTER indicating the start of the active channel times of the
device. Output for the SLAVE indicating the start of the active channel times of
the device. Output in MOD mode providing a pulse indicating the start of the C-
channel.
DD
CDSTo/CDo
VDD
LIN
TEST
LOUT DIS
Precan
OSC1
OSC2
C4/TCK
F0o/RCK
DSTi/Di
DSTo/Do
.
CDSTi/CDi
F0/CLD
LOUT
VBias
RegC
VRef
MS2
MS1
MS0
VSS
NC
Figure 2 - Pin Connections
2
-CMOS process.
Zarlink Semiconductor Inc.
MT9171/72
10
11
12
1
2
3
4
5
6
7
8
9
24 PIN SSOP
2
24
23
22
21
20
19
18
17
16
15
14
13
VDD
LIN
TEST
LOUT DIS
Precan
OSC1
NC
OSC2
C4/TCK
F0o/RCK
DSTi/Di
DSTo/Do
Description
F0/CLD
RegC
MS2
MS1
MS0
NC
NC
5
6
7
8
9
10
11
28 PIN PLCC
•
Bias
.
25
24
23
22
21
20
19
Data Sheet
C4/TCK
NC
LOUT DIS
Precan
OSC1
OSC2
NC
DD
.