W6692 Datasheet, PDF (26/104 Pages) Winbond – PCI Bus ISDN S/T-Controller

Preliminary Data Sheet
Send Continuous Pulses
A 96 kHz continuous pulse with alternating polarities is sent.
W6692 PCI ISDN S/T-Controller
Send Single Pulses
A 2 KHz , isolated pulse with alternating polarities is sent.
Layer 1 Reset
A layer 1 reset command forces the transmission of INFO 0 and disables the S line awake detector. Thus activation from NT is
not possible. There is no indication in reset state. The reset state can be left only with ECK command.
TABLE 7.2 LAYER 1 COMMAND CODES
Command
Enable clock
Layer 1 reset
Send continuous pulses
Send single pulses
Activate request at priority 8
Activate request at priority 10
Enable analog loopback
Deactivate layer 1
Symbol
ECK
RST
SCP
SSP
AR8
AR10
EAL
DRC
Code
0000
0001
0100
0010
1000
1001
1010
1111
Description
Enable internal clocks
Layer 1 reset
Send continuous pulses at 96 kHz
Send isolated pulses at 2 kHz
Activate layer 1 and set D channel priority level to 8
Activate layer 1 and set D channel priority to 10
Enable analog loopback
Deactivate layer 1 and disable internal clocks
TABLE 7.3 LAYER 1 INDICATION CODES
Indication
Clock Enabled
Deactivate request downstream
Level detected
Activate request downstream
Test indication
Symbol
CE
DRD
LD
ARD
TI
Code
0111
0000
0100
1000
1010
Awake test indication
ATI
Activate indication with priority AI8
class 1
Activate indication with priority AI10
class 2
Clock disabled
CD
1011
1100
1101
1111
Descriptions
Internal clocks are enabled
Deactivation request by S interface, i.e INFO 0 received
Signal received, receiver not synchronous
INFO 2 received
Analog loopback activated or continuous zeros or single zeros
transmitted
Level detected during test function
INFO 4 received, D channel priority is 8 or 9
INFO 4 received, D channel priority is 10 or 11
Layer 1 deactivated, internal clocks are disabled
7.2.3.2 State Transition Diagrams
The followings are the state transition diagrams, which implement the activation/deactivation state matrix in I.430 (TABLE
5/I.430). The "command" and "s receive" entries in each state octagon keep the state, the "indication" and "s transmit" entries in
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Publication Release Date: Sep 30, 1999
Revision 0.9