W6691CD WINBOND [Winbond], W6691CD Datasheet - Page 33

• Manufacturer Part Number: W6691CD
• Description: ISDN S/T Interface Transceiver
• Manufacturer: WINBOND [Winbond]

Single alternating 2KHz pulses are sent.
TABLE 7.4 LAYER 1 COMMAND CODES
Command
Deactivate down request
Send continuous pulses
Send single pulses
Activate request downstream ARD
Deactivate request assure
RESET
TABLE 7.5 LAYER 1 INDICATION CODES
Indication
Signal synchronize
Activate request Indication
upstream
Activate indication upstream
Deactivate request indication
upstream
RESET Indication
Test Indication
Symbol Code
DDR
SCP
SSP
DRA
RST
Symbol Code
SSYU
ARIU
AIU
DRIU
RSTI
TI
0000
1000
1111
0011
0010
1000
1111
0001
0100
1100
0001
0000
Description
Deactive Layer1 and disable internal clocks
Send continuous pulses at 96 kHz
Send isolated pulses at 2 kHz
Request Layer1 activate Info2/Info4 sent
Layer2 reponses Deactivate acknowledgement to make
sure Layer1 can be deativate
Initialize to G4 or G1 state
Descriptions
Received signal is not
again
the INFO 1 signal detected is responsed to Layer2.
Synchronous receiver
1. Timer2 expired
2.
Reset state indication
33
request command
info 0 received during 25ms after deactivation
Preliminary W6691
Info3 and try to re-synchronize
Publication Release Date: Sep 2001
Revision 1.1