參數(shù)資料
型號： YTD423D-S
元件分類： 數(shù)字傳輸電路
英文描述： DATACOM, ISDN CONTROLLER, PQFP100
封裝： SQFP-100
文件頁數(shù)： 6/13頁
文件大?。?/td> 219K
代理商： YTD423D-S
Supp
orts
ETSI
ETS
300
012
[April
1992]
and
ANSI
T1.605
op
erating
mo
des
Leased
line
capabilit
y
(JT-I430-a)
Bc
hannel
I/O
clo
c
k
selection
function
{
In
ternal
clo
c
kmo
de:
Inputs/outputs
the
B-c
hannel
data
with
64
k,
56
k
or
32
kHz
in
ternal
clo
c
k
{
External
clo
c
k
mo
de
(PCM
High
w
a
y
mo
de):
Inputs/outputs
the
B
c
hannel
data
with
a
128
kHz
to
2048
kHz
external
clo
c
k
Bc
hannel
selection
function
{
In
ternal
clo
c
kmo
de:
Selects/switc
hes
B
c
hannel
I/O
pins
{
External
clo
c
k
mo
de
(PCM
High
w
a
y
mo
de):
Selects/switc
hes
B
c
hannel
time
slots
Multiframing
capabilit
y
Abundan
tT
est
functions
(for
testing
and
main
tenance)
{
Three
kinds
of
lo
op-bac
k
mo
des
(Lo
op-bac
k1to
3)
{
INF
O
signals
output
for
testing
{
T
est
pulse
output
for
pulse
shap
e
ev
aluation
INF
O1
transmission
and
INF
O4
reception
monitor
pins
SLEEP
monitor
pin
I.430
transmission
frame
phase
adjustmen
t
function
2.
La
y
er
2
function
Conforms
to
ITU-T
Recommendation
Q.920
and
Q.921
[1992
edition]
and
TTC
Standard
JT-Q920
and
JT-Q921
[1993
edition]
(default)
{
HDLC
frame
con
trol
(Flag
con
trol,
F
CS
generation/c
hec
king,
automatic
zero
insertion/deletion,
ab
ort
pattern
transmission/detection,
etc.)
{
LAP-D
status
con
trol
(sequence
con
trol,