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: 5/11页
文件大小: 210K
代理商: YTD423
4.
HDLC
con
troller
for
B-c
hannels
HDLC
frame
con
trol
(Flag
con
trol,
optional
marks
or
ags
in
idle
state,
optional
F
CS
generation/c
hec
king,
automatic
zero
insertion/deletion,
ab
ort
pattern
transmission/detection,
optional
address
eld
genera-
tion/c
hec
king
etc.)
F
ull-duplex
comm
unication
2
2c
hannels
Data
rates
Net
w
ork
sync
hronization
clo
c
kmo
de
:
56
k
or
64
kbps
Net
w
ork
indep
enden
t
clo
c
kmo
de
:
Up
to
128
kbps
Optional
16-bit/32-bit
CR
C
Programmable
data
transfer
mo
des
{
DMA
transfer
mo
de
(with
the
built-in
DMA
con
troller)
3
optional
8-bit/16-bit
access
3
24-bit
address
3
4c
hannels
{
I/O
transfer
mo
de
(with
the
built-in
FIF
O)
3
Tx
FIF
O
:
32
b
ytes
2
3
Rx
FIF
O
:
64
b
ytes
2
3
V
ariable
in
terrupt
lev
els
3
Byte/W
ord
access
selection
Optional
transparen
t
mo
de
(disable
HDLC
con
troller
function)
5.
Lo
w-p
o
w
er
op
eration
(the
host
pro
cessor
clo
c
k
con
trol
function,
LSI
in
ternal
clo
c
k
freezing
function)
6.
CMOS
tec
hnology
7.
100-pin
SQFP
8.
Single
+5V
v
olt
supply
1.2
Applications
T
erminal
Adapter
(T
A)
Router
ISDN
PC
Card
PBX
ISDN
T
elephone
3
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