le75282 Zarlink Semiconductor, le75282 Datasheet - Page 4

• Manufacturer Part Number: le75282
• Description: Dual Intelligent Line Card Access Switch
• Manufacturer: Zarlink Semiconductor

CONNECTION DIAGRAM
Pin Descriptions
Notes:
"x" denotes channel number.
* Internal pull down on this node.
2, 3, 5, 10, 29,
31, 32, 35, 39,
CH1
27
21
36
38
37
28
19
11, 23
9, 25
43
CH2
13
42
40
41
20
7
6
FGND
ASLIC
ALINE
ARINGING
ATEST
VDD
TSD
DGND
OFFx*
NC
Pin Name
x
x
x
x
x
x
Fault ground.
Connect to A lead on SLIC side.
Connect to A lead on line side.
Connect to return ground of ringing
generator.
A lead test access.
5 V supply.
Temperature shutdown flags. Read V
potential when device is in its
operational mode and 0 V when device
is in the thermal shutdown mode.
Digital ground.
All Off logic level input switch control. A
pull-down device is included, setting All
Off as the power-up default state. These
pins can also be used as a device reset.
If these pins are not to be used, they
must be tied to VDD.
No Connect. This pin is not internally
connected.
BRINGING2
BTEST2
FGND2
DGND
TSD2
VBH
VDD
NC
NC
NC
NC
Description
10
11
1
2
3
4
5
6
7
8
9
44
12
43
13
Zarlink Semiconductor Inc.
42
14
41
15
44-pin TQFP
40
16
DD
39
17
4
38
18
CH1
22
34
30
33
17
37 36 35 34
19 20 21 22
8, 26
14
15
16
24
CH2
12
44
18
4
1
BRINGING
Pin Name
BTEST
BSLIC
BLINE
CFG
VBH
33
32
31
30
29
28
27
26
25
24
23
LDx
P1’
P2’
P3’
x
x
x
BTEST1
NC
NC
BRINGING1
NC
TSD1
FGND1
VBH
VDD
CFG
DGND
x
High-battery voltage. Used as a
reference for protection circuit.
Connect to B lead on SLIC side.
Connect to B lead on line side.
Connect to ringing generator.
B lead test access.
Data latch channel control, active low.
Logic level input switch control.
Connect to P-bus. See
page 14
Logic level input switch control.
Connect to P-bus. See
page 14
Logic level input switch control.
Connect to P-bus. See
page 14
Operating states configuration. Tie to
DGND to select operating states as
defined in
operating states as defined in
for proper connection.
for proper connection.
for proper connection.
Table
Description
9. Tie to VDD for
Applications, on
Applications, on
Applications, on
Table
10.