PEF82912FV1.4 Infineon Technologies, PEF82912FV1.4 Datasheet - Page 119

• Manufacturer Part Number: PEF82912FV1.4
• Description: ISDN Interface ISDN
• Manufacturer: Infineon Technologies

Specifications of PEF82912FV1.4

• Mounting Style: SMD/SMT
• Package / Case: MQFP-64
• Lead Free Status / Rohs Status: Details

2.5.2
According to ITU recommendation I.430 a multi-frame provides extra layer-1 capacity in
the TE-to-NT direction through the use of an extra channel between the TE and NT (Q-
channel). The Q bits are defined to be the bits in the F
In the NT-to-TE direction the S-channel bits are used for information transmission.
The S- and Q-channels are accessed via µC by reading/writing the SQR or SQX bits in
the S/Q channel registers (SQRR, SQXR).
Table 30
Table 30
Frame Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1
2
Data Sheet
shows the S and Q bit positions within the multi-frame.
S/Q Channels, Multiframing
S/Q-Bit Position Identification and Multi-Frame Structure
NT-to-TE
F
ONE
ZERO
ZERO
ZERO
ZERO
ONE
ZERO
ZERO
ZERO
ZERO
ONE
ZERO
ZERO
ZERO
ZERO
ONE
ZERO
ZERO
ZERO
ZERO
ONE
ZERO
A
Bit Position
NT-to-TE
M Bit
ONE
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ZERO
ONE
ZERO
105
NT-to-TE
S Bit
S11
S21
S31
S41
S51
S12
S22
S32
S42
S52
S13
S23
S33
S43
S53
S14
S24
S34
S44
S54
S11
S21
A
bit position.
Functional Description
PEF 82912/82913
TE-to-NT
F
Q1
ZERO
ZERO
ZERO
ZERO
Q2
ZERO
ZERO
ZERO
ZERO
Q3
ZERO
ZERO
ZERO
ZERO
Q4
ZERO
ZERO
ZERO
ZERO
Q1
ZERO
A
Bit Position
2001-03-30