XRT79L71
REV 。 P1.0.3
初步
目录
1 - 通道DS3 / E3 ATM的UNI / PPP COMBO IC
á
概述................................................ ................................................. 1
一般
F
EATURES
:......................................................................................................................................1
线路接口单元....................................................................................................................................................... 1
DS3 / E3 Framer............................................................................................................................................................ 1
ATM / PPP协议PROCESSOR........................................................................................................................ 1
传输单元Processing............................................................................................................................................. 1
接收小区Processing.............................................................................................................................................. 2
发送数据包处理........................................................................................................................................ 2
接收数据包处理......................................................................................................................................... 2
乌托邦/系统接口............................................................................................................................................. 2
串行接口............................................................................................................................................................ 2
应用...........................................................................................................................................2
F
IGURE
1. B
LOCK
D
的作者IAGRAM
XRT79L71 ............................................................................................................................... 2
P
RODUCT
O
RDERING
I
载文信息
................................................................................................................2
T
ABLE
1: P
IN
O
的的UT
XRT79L71 （ TOP VIEW ） ........................................................................................................................ 3
T
干练
C
ONTENTS
...........................................................................................................1
P
IN
D
ESCRIPTIONS
.........................................................................................................................................4
M
ICROPROCESSOR
I
覆盖整个院落
.......................................................................................................................4
T
EST和
D
IAGNOSTIC
...................................................................................................................................7
G
ENERAL
P
URPOSE
I
NPUT和
O
安输出
P
插件
.................................................................................................8
T
RANSMIT
S
变体系
S
IDE
I
覆盖整个院落
P
插件
.......................................................................................................8
R
ECEIVE
S
变体系
S
IDE
I
覆盖整个院落
P
插件
.......................................................................................................23
T
RANSMIT
L
INE
S
IDE
S
IGNALS
......................................................................................................................35
R
ECEIVE
L
INE
S
IDE
S
IGNALS
........................................................................................................................36
VDD P
插件
...................................................................................................................................................37
GND P
插件
...................................................................................................................................................38
N
OT
C
ONNECTED
P
插件
.................................................................................................................................38
电气特性................................................ ................................ 39
AC电气特性信息.............................................. .... 39
微处理器接口时序
为
R
EVISION
A S
ILICON
......................................................39
微处理器接口时序 - 异步INTEL模式........................................... ......... 39
T
ABLE
2 ：直流电气CHARACTERISTICSS..................................................................................................................... 39
适用于所有TTL电平输入和CMOS电平输出引脚 - 环境温度= 25°C ............................... ... 39
F
IGURE
2. A
SYNCHRONUS
M
ODE
1 - I
NTEL TYPE
P
ROGRAMMED
I / O牛逼
即时通信
(W
RITE
C
YCLE
) ............................................................ 39
F
IGURE
3. A
SYNCHRONUS
M
ODE
1 - I
NTEL TYPE
P
ROGRAMMED
I / O牛逼
即时通信
(R
EAD
C
YCLE
) ............................................................. 40
T
ABLE
3: T
即时通信
I
载文信息的
M
ICROPROCESSOR
I
覆盖整个院落
,
当配置工作在
I
NTEL
A
同步
M
ODE
............................................................................................................................................................................ 40
微处理器接口时序 - 异步MOTOROLA （ 68K ）
MODE................................................................................................................................41
F
IGURE
4. A
SYNCHRONUS
M
ODE
2 - M
OTOROLA
68K P
ROGRAMMED
I / O牛逼
即时通信
(W
RITE
C
YCLE
) .................................................... 41
F
IGURE
5. A
SYNCHRONUS
M
ODE
2 - M
OTOROLA
68 P
ROGRAMMED
I / O牛逼
即时通信
(R
EAD
C
YCLE
) ........................................................ 41
微处理器接口时序 - POWER PC 403同步MODE42
T
ABLE
4: T
即时通信
I
载文信息的
M
ICROPROCESSOR
I
覆盖整个院落当配置工作在
M
OTOROLA
（ 68K ）一个
SYN
-
异步的
M
ODE
........................................................................................................................................................... 42
F
IGURE
6. S
YNCHRONOUS
M
ODE
3 - IBM P
OWER
PC 403我
时序覆盖整个院落
(W
RITE
C
YCLE
) ......................................................... 42
F
IGURE
7. S
YNCHRONOUS
M
ODE
3 - IBM P
OWER
PC 403我
时序覆盖整个院落
(R
EAD
C
YCLE
)........................................................... 43
T
ABLE
5: T
即时通信
I
载文信息的
M
ICROPROCESSOR
I
覆盖整个院落
,
当配置工作在
IBM P
OWER
PC403
M
ODE
............................................................................................................................................................................ 43
微处理器接口时序 - IDT3051 / 52模式.................................. 44
F
IGURE
8. S
YNCHRONOUS
M
ODE
4 - IDT 52分之3051我
时序覆盖整个院落
(W
RITE
C
YCLE
) .................................................................... 44
F
IGURE
9. S
YNCHRONOUS
M
ODE
4 - IDT 52分之3051我
时序覆盖整个院落
(R
EAD
C
YCLE
)...................................................................... 45
T
ABLE
6: T
即时通信
I
载文信息的
M
ICROPROCESSOR
I
覆盖整个院落
,
当配置工作在
IBM P
OWER
PC403
M
ODE
............................................................................................................................................................................ 45
DS3 / E3 LIU接口 - 线侧电特性信息
46
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