pef22504 Infineon Technologies Corporation, pef22504 Datasheet - Page 107

• Manufacturer Part Number: pef22504
• Description: Quad E1/t1/j1 Line Interface Component For Long- And Short-haul Applications Pef 22504 E, Pef 22504 Ht, Version 2.1
• Manufacturer: Infineon Technologies Corporation

Table 29
LBO
0
7.5
15
22.5
Table 30
R
7.5
7.5
---
7.5
1) The values in this row refers to an ideal application without any parasitics. Any other parasitic resistances have to be taken
3.9.6.2
By setting of register bit XPM2.XPDIS the pulse shape will be configured by the registers TXP(16:1) (TXP1). Every
of these registers define the amplitude value of one sampling point in the symbol. A symbol is formed by 16
sampling points.
The default setting after reset for the registers TXP(16:1) generates also the E1 pulse shape (0m), but with an
unreduced amplitude. (TXP(9:16) = ´00
switching into T1 mode, an explicit new programming like
The pulse shape configuration will be done also by the registers TXP(16:1) if a LBO attenuation is selected. The
pulse shape is then determined by both, the values of TXP(16:1) and the LBO filtering.
The given values in
configurations listed in
Table 31
LBO
(dB)
0
0
0
0
0
7.5
155
22.5
Data Sheet
SER
)
1)
into account when calculating the final value of the output serial resistors.
(m)
0 to 40
40 to 81
81 to 122
81 to 122
122 to 162 399 to 533 63
--
--
--
Range
Recommended Pulse Shaper Programming for T1/J1 with Registers XPM(2:0) (Compatible to
QuadFALC V2.1 (cont’d))
Recommended Pulse Shaper Programming for E1 with Registers XPM(2:0) (Compatible to
QuadFALC V2.1)
Programming with TXP(16:1) Registers
Recommended Pulse Shaper Programming for T1 with Registers TXP(16:1)
Z
( )
120
75
Reset values
DCIM Mode
Range
162 to 200
---
---
---
0
(ft)
0 to 133
133 to 266 48
266 to 399 48
266 to 399 56
--
--
--
Table 31
Range
Table 28
and
TXP Values, Decimal
1
46
46
46
46
and shown in
Table 32
Transmit Line
Interface Mode
Non generic
Non generic
Non generic
2
46
50
50
58
63
46
46
46
Range
533 to 655
H
´; TXP(1:8) = ´38
3
46
48
46
54
58
46
46
46
are optimized for transformer ratio: 1 : 2.4; cable: AWG24 and
Figure
4
44
46
44
52
56
44
44
44
5
44
46
44
48
52
44
44
44
37.
107
XPM0
Hexadecimal
9C
8D
7B
EF
6
44
44
44
48
52
44
44
44
XPM0
3F
Are not taken into account: pulse shape generation is
handled internally.
Table 31
H
´= 56
7
44
44
44
48
51
44
44
44
D
´) No reset value for T1 mode exists. So after
8
44
44
44
48
51
44
44
44
is necessary.
9
16
16
16
16
16
16
16
16
XPM1
03
03
03
BD
XPM1
CB
10
-17 -14 -14 -4
-17 -14 -14 -4
-25 -17 -14 -4
-25 -17 -14 -4
-34 -32 -17 -4
-17 -14 -14 -4
-17 -14 -14 -4
-17 -14 -14 -4
11
12
Functional Description
Rev. 1.3, 2006-01-25
13
11
XPM2
00
00
40
07
XPM2
14
-4
-4
-4
-4
-4
-4
-4
-4
QuadLIU
PEF 22504
15
-4
-4
-4
-4
-4
-4
-4
-4
16
-4
-4
-4
-4
-4
-4
-4
-4
TM