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| 型號： | MT8920B |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | ST-BUS Parallel Access Circuit(串行通信總線（ST-Bus）并行存取電路（在ST總線和并行系統(tǒng)間提供一個簡單接口）) |
| 中文描述： | 意法半導(dǎo)體總線并行訪問電路（串行通信總線（圣總線）并行存取電路（在圣總線和并行系統(tǒng)間提供一個簡單接口）） |
| 文件頁數(shù)： | 1/29頁 |
| 文件大小： | 215K |
| 代理商： | MT8920B |
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3
3-3
Features
High speed parallel access to the serial ST-BUS
Parallel bus optimized for 68000
μ
P (mode 1)
Fast dual-port RAM access (mode 2)
Access time: 120 nsec
Parallel bus controller (mode 3) - no external
controller required
Flexible interrupt capabilities - two
independent/programmable interrupt sources
with auto-vectoring
Selectable 24 and 32 channel operation
Programmable loop-around modes
Low power CMOS technology
Applications
Parallel control/data access to T1/CEPT digital
trunk interfaces
Digital signal processor interface to ST-BUS
Computer to Digital PABX link
Voice store and forward systems
Interprocessor communications
Description
The ST-BUS Parallel Access Circuit (STPA) provides
a simple interface between Mitel’s ST-BUS and
parallel system environments.
Ordering Information
MT8920BE
28 Pin Plastic DIP
MT8920BP
28 Pin Plastic J-Lead
MT8920BS
28 Pin SOIC
-40
°
C to 85
°
C
Figure 1 - Functional Block Diagram
D7-D0
A4-A0
CS
DS, OE
R/W, WE
DTACK,
BUSY, DCS
IRQ, 24/32
IACK, MS1
A5, STCH
MMS
V
SS
V
DD
C4i
F0i
STo1
STi0
STo0
Tx0
Dual Port Ram
32 X 8
Rx0
Dual Port Ram
32 X 8
Tx1
Dual Port Ram
32 X 8
Parallel-
to-serial
Converter
Serial-to-
Parallel
Converter
Parallel-
to-Serial
Converter
Comp/
MUX
Address
Generator
Parallel
Port
Interface
Interrupt
Registers
Control
Registers
ISSUE 7
March 1997
MT8920B
ST-BUS Parallel Access Circuit
ISO-CMOS ST-BUS
FAMILY
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT8924-1 | PCM Conference Circuit (PCC) Preliminary Information |
| MT8924AE | PCM Conference Circuit (PCC) Preliminary Information |
| MT8924AS | PCM Conference Circuit (PCC) Preliminary Information |
| MT8924 | PCM Conference Circuit (PCC) Preliminary Information |
| MT8930B | () |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| MT8920BE1 | 制造商:Zarlink Semiconductor Inc 功能描述:ST-BUS PARALLEL ACCESS CIRCUIT 28PDIP - Rail/Tube 制造商:Microsemi 功能描述:Microsemi MT8920BE1 Interface Misc |
| MT8920BP | 制造商:Microsemi Corporation 功能描述: 制造商:MITEL 功能描述: |
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