le79231 Zarlink Semiconductor, le79231 Datasheet - Page 18

• Manufacturer Part Number: le79231
• Description: Intelligent Subscriber Line Interface Circuit
• Manufacturer: Zarlink Semiconductor

4.
5.
6.
WAVEFORMS
P1,P2,P3
Le79231 ISLIC device registers are refreshed at 5.33 kHz when used with a Le79Q224x or Le79228 codec.
If the clock or MPI becomes disabled, the LD pins and P1
connection.
Not tested in production. Guaranteed by characterization.
P1,P2,P3
P1,P2,P3
LD
LD
LD
S
Relay Data
Previous
VREF
VREF
VREF
VCC
R
0V
t
SDXSU
tr
SLD
187.5 µs
State Data
Zarlink Semiconductor Inc.
–
t
3 returns to 0 V state, thus protecting the Le79231 ISLIC device and the line
t
SLDPW
SDXD
DETAIL A
18
S
Relay Data
R
t
tf
SDXHD
SLD
New State
Lock Registers
Write State Register
Write Relay Register
Relay driver
Write Relay Register
Data
Write State Register
response
S
R