MT88E39
Data Sheet
channel seizure
checksum
Mark state
2 sec
TIP/RING
PWDN
Input FSK
Data
Second
Ring
First Ring
500 ms
(min)
200 ms
(min)
t
PU
t
PD
OSC2
CD *
t
t
IAH
IAL
DATA
High (Input Idle)
High (Input Idle)
DCLK
(mode 0)
DR *
* with pull-up resistor in mode 0
Figure 10 - Input and Output Timing (Bellcore CND Service)
start
stop
start
stop
start
stop
TIP/RING
DATA
b7
b6
b6
b0 b1 b2
1
0
b0 b1 b2 b3 b4 b5
b7
b6
b0 b1 b2 b3 b4 b5
b7
b6
1
0
1
0
t
IDD
start
start
start
b0 b1 b2
b7
b0 b1 b2 b3 b4 b5
b7
b0 b1 b2 b3 b4 b5
b7
stop
stop
stop
DCLK
DR *
t
CRD
* with external pull-up resistor
Figure 11 - Serial Data Interface Timing (Mode 0)
13
Zarlink Semiconductor Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
