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參數(shù)資料
| 型號(hào)： | MT8920 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| 中文描述： | 異意法半導(dǎo)體的CMOS總線⑩家庭圣總線并行訪問(wèn)電路 |
| 文件頁(yè)數(shù)： | 9/24頁(yè) |
| 文件大?。?/td> | 534K |
| 代理商： | MT8920 |
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CMOS
MT8920B
3-11
Figure 5 - Loopback Configurations
Interrupt Mask Register (1/2):
In static mode the
contents of this register masks bits in the Match Byte
Register that are ’don’t care’ bits
1 - bit masked
0 - bit not masked
In dynamic mode, each bit in this register and the
corresponding bit in the Match Byte Register define
what type of dynamic interrupt is selected. (Refer to
Table 5.)
Interrupt Flag Register (1/2):
In static mode
the least significant bit in this register is set to 1 to
flag the corresponding path in which the interrupt
occurs.
In dynamic mode this register sets the bits which
reflect the position of the bits in the corresponding
Interrupt Register which caused the interrupt.
Figure 6 - STo1 Configurations
Interrupt Vector Register
This register shown in Figure 7 is common to both
interrupt paths and stores an 8 bit vector number
which will be output on the data bus when
Interrupt Acknowledge (IACK) is asserted. Bits
labelled V
2
- V
7
are stored by the controlling
μ
P.
Bits IRQ1 and IRQ2 are set by the STPA to indicate
which path caused the interrupt. This creates unique
vectors which are used by the
μ
P to vector to
interrupt service routines. This feature may be
bypassed by simply not asserting IACK during
interrupt acknowledged.
Figure 7 - Interrupt Vector Registers
STo0
STi0
Rx0
μ
P
Control Register 2
Bits D
1
= 0, D
0
= 1
a)
STo0
STi0
Tx0
Rx0
μ
P
Control Register 2
Bits D
1
= 1, D
0
= 0
b)
STo0
STi0
Control Register 2
Bits D
1
= 1, D
0
= 1
μ
P
Tx0
Rx0
c)
D7
D6
D5
D4
D3
D2
D1
D0
V
7
V
6
V
5
V
4
V
3
V
2
IRQ2
IRQ1
STo0
STi0
STo1
STo0
STi0
STo1
STo0
STi0
STo1
μ
P
μ
P
μ
P
Tx0
Rx0
Tx1
1 Frame Delay
Tx0
Rx0
Tx1
Tx0
Rx0
Tx1
1 Frame Delay
Control Register 2
Bits D
3
= 0, D
2
= 1
Control Register 2
Bits D
3
= 1, D
2
= 0
Control Register 2
Bits D
3
= 1, D
2
= 1
a)
b)
c)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT8920B | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920B-1 | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920BC | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920BE | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920BP | ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8920AE | 制造商:Mitel Networks Corporation 功能描述: |
| MT8920B | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920B-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920BC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO-CMOS ST-BUS⑩ FAMILY ST-BUS Parallel Access Circuit |
| MT8920BE | 制造商:Mitel Networks Corporation 功能描述:COMMUNICATIONS INTERFACE, 28 Pin, Plastic, DIP |
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