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參數(shù)資料
| 型號(hào)： | MT9079 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Advanced Controller for E1(先進(jìn)的E1幀調(diào)節(jié)器和控制器) |
| 中文描述： | 高級(jí)控制器素E1（先進(jìn)的素E1幀調(diào)節(jié)器和控制器） |
| 文件頁(yè)數(shù)： | 39/60頁(yè) |
| 文件大?。?/td> | 347K |
| 代理商： | MT9079 |
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MT9079
4-245
The data link transmit and receive signals are
connected directly to port one. The DCLK signal is
connected to INT1 so the 80C52 will be interrupted
when new data link data needs to be transported.
Figure 9 illustrates a circuit that will interface the
MT9079 to the MC68302 microprocessor operating
at 20 MHz. CS0 was chosen so that no external
address decoding would be required. The MT9079
does not have a DTACK output therefore, the
MC68302 DTACK should be tied high. The data link
interface is handled by Non-multiplexed Serial
Interface port Two (NMSI2).
Figure 10 shows how to connect a 16 MHz 80C188
microprocessor to the MT9079. The 80C188 WR and
RD signals are re-timed using the CLKOUT signal to
generate a DS signal for the MT9079. The inverted
form of DT/R is used to make a R/W signal, and the
ALE is used to latch the lower order address lines for
the duration of the access cycle.
MT9079 TAIS and Reset Circuit
Figure 11 illustrates a reset and transmit AIS circuit
that can be implemented with the MC68302
microprocessor. This circuit has three purposes: 1)
to provide a power-on reset for the all the MT9079
devices; 2) to have all the MT9079 devices transmit
AIS during system initialization; and 3) to have all the
MT9079 devices transmit AIS when the MC68302
watch-dog time expires.
Figure 9 - MT9079 to MC68302 (20 MHz) Microprocessor Interface Circuit
Figure 10 - MT9079 to 80C188 (16 MHz) Microprocessor Interface Circuit
CS0
IRQ7
LDS
R/W
A
0
-A
4
D
0
-D
7
BCLR
DTACK
RxD2
TxD2
RCLK2
5
8
700k
CS
IRQ
DS
R/W
AC
0
-AC
4
D
0
-D
7
S/P
RxDL
TxDL
DLCLK
MT9079
MC68302
EXTAL
XTAL
10k
10k
10k
+5V
BERR
BGACK
AVEC
BR
FRZ
DISCPU
BUSW
+5V
10k
+5V
10k
+5V
+5V
4.7k
+5V
10k
TCLK2
74HCT04
25pF
25pF
RD
WR
AD
0
-AD
7
CLKOUT
DT/R
LCS, MCS,
UCS, or PCS
CS
D
0
-D
7
IRQ
MT9079
80C188
R/W
+5V
10k
NMI
74F04
74F04
74F04
D
CLR
Q
Q
DS
74F86
74F04
74F74
S/P
OE
CP
Qn
ALE
Dn
5
5
AC
0
-AC
4
74F374
8
8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT9079AC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS? FAMILY Advanced Controller for E1 |
| MT9079AE | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS? FAMILY Advanced Controller for E1 |
| MT9079AL | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS⑩ FAMILY Advanced Controller for E1 |
| MT9079AP | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:CMOS ST-BUS⑩ FAMILY Advanced Controller for E1 |
| MT9079APR | 制造商:Microsemi Corporation 功能描述:FRAMER E1 5V 44PLCC - Tape and Reel |
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