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參數(shù)資料
| 型號： | AS8202 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | TTP/C-C2 Communication Controller |
| 中文描述： | 2 CHANNEL(S), 25M bps, SERIAL COMM CONTROLLER, PQFP80 |
| 封裝： | PLASTIC, TQFP-80 |
| 文件頁數(shù)： | 3/10頁 |
| 文件大小： | 101K |
| 代理商： | AS8202 |
TTP/C-C2 Communication Controller
– Preliminary Data Sheet
AS8202
Rev. 1.0, October 2000
Page 3 of 3
The CNI (communication network interface) forms a temporal firewall. It decouples the
controller network from the host subsystem by use of a dual ported RAM. This prevents the
propagation of control errors. The interface to the host CPU is implemented as 16 bit wide non-
multiplexed asynchronous bus interface.
TTP/C follows a conflict-free media access strategy called time-division-multiple access
(TDMA). This means, TTP/C deploys a time slot technique based on a global time which is
permanently synchronised. Each node is assigned a time slot in which it is allowed to perform
transmit operation. The sequence of time slots is called TDMA round, a set of TDMA rounds
forms a cluster cycle. After one cluster cycle the operation of the network repeats. The
sequence of interactions forming the cluster cycle is defined in a static time schedule, called
message-descriptor-list (MEDL). The definition of the MEDL in conjunction with the global time
determines the response time for a service request.
The membership of all nodes in the network is evaluated by the communication controller. This
information is presented in a consistent fashion to all correct cluster members. During
operation, the status of every other node is propagated within one TDMA round. The MEDL is
loaded into the configuration memory when the system starts up.
Package and Pin Assignment
Type: TQFP 80, plastic package
r
test-se
Vss
xin1
xout1
Vdd
AS8202
TTP/C
Communications
Controller
(TOP VIEW)
x
V
x
t
V
c
r
t
r
r
r
V
t
V
c
r
t
r
r
r
r
r
r
r
r
r
r
r
V
r
r
r
r
r
r
V
r
r
stest
resetb
fidis
ftest
plloff
led[2]/time-overflow
led[1]/time-tick
Vdd
time-signalb
Vss
led[0]/microtick
mtest
ram-address[0]
ram-address[1]
ram-address[2]
ram-ceb
ram-oeb
Vss
Vdd
ram-data[15]
ram-data[14]
ram-data[13]
ram-data[12]
n.c.
n.c.
to Vdd
to Vss
ram-readyb
ram-web
ram-data[11]
ram-data[10]
V
1
20
21
40
41
60
61
80
ram-data[9]
ram-data[8]
Vss
Vdd
Figure 2 TQFP 80 pin package and pin assignment
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS8202NF | 制造商:AMS 功能描述:AS Series 3.3 V 2-Function SMT TTP-C2NF Communication Controller - LQFP-80 |
| AS8202NF_14 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TTP-C2NF Communication Controller |
| AS8202NF-ALQR | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TTP-C2NF Communication Controller |
| AS8202NF-ALQT | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TTP-C2NF Communication Controller |
| AS8202NF-ALQU | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:TTP-C2NF Communication Controller |
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