pef20550 Infineon Technologies Corporation, pef20550 Datasheet - Page 172
pef20550
Manufacturer Part Number
pef20550
Description
Extended Line Card Interface Controller Elic
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEF20550.pdf
(407 pages)
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Note: When bus configuration with direct connection of multiple ELIC’s is used open
ITF
Note: ITF has to be set 0 if clock mode 3 is used.
CM2
CM1..0
Note: Clock mode 3 is only applicable for SACCO-A in combination with the D-channel
Semiconductor Group
drain option is still recommended.
The push-pull option with bus configuration can only be used if an external tri-state
buffer is placed between TXDA / TXDB and the bus.
Due to the delay of TSCA / TSCB in this mode (see description of bits SOC(0:1)
in register CCR2 (chapter 4.7.9)) these signals cannot directly be used to enable
this buffer.
arbiter.
Inter frame Time Fill.
0…single rate data clock
1…double rate data clock
Up to Version 1.2 when selecting a bus configuration only the open
drain option must be selected.
Compared to the Version 1.2 the Version 1.3 provides new features:
Push-pull operation may be selected in bus configuration (up to Version 1.2
only open drain):
• When active TXDA / TXDB outputs serial data in push-pull-mode
• When inactive (interframe or inactive timeslots) TXDA / TXDB outputs ’1’
Determines the "no data to send" state of the transmit data pin (TxDA/B).
0… continuous IDLE-sequences are output ('11111111' bit pattern).
1… continuous FLAG-sequences are output ('01111110' bit pattern). In a bus
Clock rate.
Clock Mode.
Determines the mode in which the data clock is forwarded toward the
receiver/transmitter.
00…clock mode 0:
01…clock mode 1:
10…clock mode 2:
11…clock mode 3:
In a bus configuration (CCR1:SC0 = 1) ITF is implicitly set to '0'
(continuous '1's are transmitted).
configuration (CCR1:SC0 = 1) ITF is implicitly set to '0' (continuous '1's
are transmitted).
external data clock, permanently enabled.
external data clock, gated by an enable strobe
external data clock, programmable time slot
forwarded via pin HFS.
assignment,
forwarded via pin HFS.
internal data clock derived from the CFI, gated
by an internally generated enable strobe.
172
frame
Detailed Register Description
synchronization
PEB 20550
PEF 20550
pulse
01.96
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