AK2548 Datasheet, PDF (24/30 Pages) Asahi Kasei Microsystems – 7 channel E1 Transceiver

ASAHI KASEI
[AK2548]
Local Loopback(RESET=1, MCLK:clocked, PD=0)
TAOS
Loopback
POLN
RDEN
TCLK
Receive
TTIP
RCLK
RPOS
LOS
Local Remote
signal
TRING
RNEG
0
1
0
1
*
clocked
in
TPOS
TCLK
TPOS
0
TNEG (Note) TNEG
0
1
0
1
*
clocked
loss
TPOS
TCLK
TPOS
1
TNEG (Note) TNEG
0
1
0
1
*
loss
in
0
0
0
0
0
1
0
1
*
loss
loss
0
0
0
1
0
1
0
0
*
clocked
in
TPOS
TCLK
TPOS
0
TNEG (Note) TNEG
0
1
0
0
*
clocked
loss
TPOS
TCLK
TPOS
1
TNEG (Note) TNEG
0
1
0
0
*
loss
in
0
0
1
0
0
1
0
0
*
loss
loss
0
0
1
1
Note) The phase satisfy receive output timing.
Local Loopback(RESET=1, MCLK:clocked, PD=0)
TAOS
Loopback
Local Remote
POLN
RDEN
TCLK
Receive
signal
TTIP
TRING
RCLK
RPOS
RNEG
LOS
1
1
0
1
*
clocked
1
1
0
1
*
clocked
1
1
0
1
*
loss
1
1
0
1
*
loss
1
1
0
0
*
clocked
1
1
0
0
*
clocked
1
1
0
0
*
loss
1
1
0
0
*
loss
Note) The phase satisfy receive output timing.
in
All Mark TCLK
TPOS
0
(Note) TNEG
loss
All Mark TCLK
TPOS
1
(Note) TNEG
in
All Mark
0
0
0
loss
All Mark
0
0
1
in
All Mark TCLK
TPOS
0
(Note) TNEG
loss
All Mark TCLK
TPOS
1
(Note) TNEG
in
All Mark
0
1
0
loss
All Mark
0
1
1
C0028-E-00
24
1999/9