pef20320 Infineon Technologies Corporation, pef20320 Datasheet - Page 113

• Manufacturer Part Number: pef20320
• Description: Multichannel Network Interface Controller For Hdlc With 32 Channels
• Manufacturer: Infineon Technologies Corporation

V.110/X.30
Transmit Direction
General Features
In transmit direction
– the synchronization pattern for V.110/X.30 frame as shown in Table 1.
– the framing for the different data rates with programmable E-, S-, X-bits
– sending ‘0’ before all frames
is performed automatically.
Table 1
Synchronization Pattern for V.110/X.30-Frames
Octet No.
1
2
3
4
5
6
7
8
9
10
The E-, S-, X-bits are fed into the data stream by special transmit descriptor (as shown
in Figure 30), they can only change from one 10-octet frame to the next, not within a 10-
octet frame.
The data from the data sections are supposed to come in the form:
31
1 1 B6 B5 B4 B3 B2 B1 1 1 B12 B11 B10 B9 B8 B7 1 1 B18 B17 B16 B15 B14 B13 1 1 B24 B23 B22 B21 B20 B19
(for Motorola mode),
31
1 1 B24 B23 B22 B21 B20 B19 1 1 B18 B17 B16 B15 B14 B13 1 1 B12 B11 B10 B9 B8 B7 1 1 B6 B5 B4 B3 B2 B1
(for Intel mode).
where for 600 bit/s e.g. B1 to B6 belong to the first 10-octet frame, B7 to B12 belong to
the second 10-octet frame, etc.
User’s Manual
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Functional Description
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PEB 20320
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01.2000
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