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參數(shù)資料
| 型號： | MT8920BS |
| 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電路 |
| 文件頁數(shù)： | 1/24頁 |
| 文件大小： | 534K |
| 代理商： | MT8920BS |
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
MT8920BC
28 Pin Ceramic 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 6
June 1996
MT8920B
ST-BUS Parallel Access Circuit
ISO-CMOS ST-BUS
FAMILY
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| MT8920BS1 | 制造商:Microsemi Corporation 功能描述:ST-BUS PARALLEL ACCESS CIRCUIT 28SOIC - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:ST-BUS PARALLEL ACCESS CIRCUIT 28SOIC - Rail/Tube |
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| MT8924AS | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:PCM Conference Circuit (PCC) Preliminary Information |
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