AK2548 Datasheet, PDF (21/30 Pages) Asahi Kasei Microsystems – 7 channel E1 Transceiver

ASAHI KASEI
[AK2548]
OUTPUT CONTROL
* : don’t care
LOS: LOSx output and LOSx register
Reset, Loss of MCLK, Power down
RESET MCLK PD TAOS
Loopback
POLN RDEN TCLK Receive TTIP
Local Remote
Signal TRING
0
*
*
*
*
*
*
*
*
*
0
1
loss
*
*
*
*
1
*
*
*
0
1
loss
*
*
*
*
0
*
*
*
0
1
clocked 1
*
*
*
1
*
*
*
0
1
clocked 1
*
*
*
0
*
*
*
0
RCLK RPOS LOS
RNEG
0
0
1
0
0
1
0
1
1
0
0
1
0
1
1
Normal Operation(RESET=1, MCLK:clocked, PD=0)
TAOS
Loopback
POLN
RDEN
TCLK
Receive
TTIP
RCLK
RPOS
LOS
Local Remote
signal
TRING
RNEG
0
0
0
1
*
Clocked
in
TPOS
RCLK
RTIP
0
TNEG
RRING
0
0
0
1
0
Clocked
loss
TPOS
0
0
1
TNEG
0
0
0
1
*
Loss
in
0
RCLK
RTIP
0
RRING
0
0
0
1
0
Loss
loss
0
0
0
1
0
0
0
1
1
Clocked
loss
TPOS
RCLK
RTIP
1
TNEG
RRING
0
0
0
1
1
Loss
loss
0
RCLK
RTIP
1
RRING
0
0
0
0
*
Clocked
in
TPOS
RCLK
RTIP
0
TNEG
RRING
0
0
0
0
0
Clocked
loss
TPOS
0
1
1
TNEG
0
0
0
0
*
Loss
in
0
0RCLK RTIP
0
RRING
0
0
0
0
0
Loss
loss
0
0
1
1
0
0
0
0
1
clocked
loss
TPOS
RCLK
RTIP
1
TNEG
RRING
0
0
0
0
1
loss
loss
0
RCLK
RTIP
1
RRING
C0028-E-00
21
1999/9