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参数资料
| 型号： | YTD423 |
| 厂商： | Yamaha Corporation |
| 英文描述： | ISDN BRI Controller With B-ch HDLC Controllers(带B通道高级数据链路控制器的ISDN BRI控制器) |
| 中文描述： | 业务数字网端口控制器与B通道的HDLC控制器（带乙通道高级数据链路控制器的业务数字网端口控制器） |
| 文件页数： | 1/11页 |
| 文件大小： | 210K |
| 代理商： | YTD423 |
YTD423
IHDLC2
ISDN BRI controller with B-ch HDLC controllers
1
INTR
ODUCTION
YTD423
is
a
high-p
erformance
comm
unication
LSI
for
the
ISDN
BRI
user-net
w
ork
in
terface
function
(digital
four-wire
time-division
full-duplex
op
eration),
supp
orting
D-c
hannel
la
y
er
1,
la
y
er
2
and
HDLC
con
troller
for
B-
c
hannels,
all
in
one
100-pin
SQFP
c
hip.
YTD423
supp
orts
la
y
er
1
(ph
ysical
la
y
er)
con
trol
function
conforming
to
ITU-T
Recommendation
I.430
and
fully
supp
orts
la
y
er
2
(LAP-D
proto
col)
function
conforming
to
ITU-T
Recommendations
Q.920
and
Q.921.
ETSI
(Europ
ean
T
elecomm
unications
Standards
Institute)
and
sev
eral
North
American
standard
op
erating
mo
des
are
also
supp
orted.
In
addition,
YTD423
includes
la
y
er
3
pro
cessor
in
terface
function
and
2-c
hannel
HDLC
con
troller
for
B-c
hannels,
whic
h
op
erate
in
DMA
transfer
mo
de
or
I/O
transfer
mo de.
This
giv
es
a
great
adv
an
tage
to
moun
ting
and
functional
designing
of
b
oth
\activ
e"
(with
CPU
on
b
oard)
terminal
equipmen
t
and
\passiv
e"
(no
CPU
on
b
oard)
PC
cards.
In
order
to
supp
ort
the
U
in
terface,
YTD423
has
aTTL
in
terface
(no
built-in
analog
driv
er/receiv
er)
suitable
for
connecting
to
an
NT1
c
hip
or
a
DSU
mo
dule.
S/T
reference
p
oin
t
can
also
b
e
supp
orted
b
y
connecting
it
to
YTD421
(analog
driv
er/receiv
er
LSI).
1.1
F
eatures
1.
La
y
er
1
function
Supp
orts
la
y
er
1
con
trol
function
conforming
to
ITU-T
Recommendation
I.430
[1992
edition]
and
TTC
Standard
JT-I430
[1993
edition]
(default)
{
TTL
in
terface
{
192
kbps
transmission
rate
{
In
terface
structure
:
2B
+
D
(B
=
64
kbps,
D
=
16
kbps)
{
F
rame
assem
bling
and
disassem
bling
function
{
Collision
con
trol
(built-in
random
n
um
b
er
(Ri)
reset),
priorit
ycon
trol
(built-in
retransmission
con-
trol),
and
state
transition
con
trol
{
Programmable
T3
and
T4
timers
YTD423D CATALOG
CATALOG No.:4TD423D2
1999.2
相关PDF资料 |
PDF描述 |
|---|---|
| YTD427 | ISDN DSU Analog Front End |
| YTD428-S | DATACOM, DIGITAL SLIC, PQFP100 |
| YTD428 | DSU LSI for the ISDN Terminal Equipment(用于ISDN终端设备的数据服务集成电路) |
| YTD436-S | DATACOM, ISDN CONTROLLER, PQFP100 |
| YTD436 | ISDN BRI controller with S/T ref. pt. analog D/R(带S/T基准和模拟D/R的ISDN BRI控制器) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| YTD423-S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| YTD426BS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| YTD427 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:ISDN DSU Analog Front End |
| YTD427F | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| YTD428 | 制造商:YAMAHA 制造商全称:YAMAHA CORPORATION 功能描述:DSU LSI for the ISDN Terminal Equipment |
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