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參數(shù)資料
| 型號(hào)： | MT90210AL |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Multi-Rate Parallel Access Circuit |
| 中文描述： | 多速率電路并行訪問 |
| 文件頁(yè)數(shù)： | 11/27頁(yè) |
| 文件大?。?/td> | 133K |
| 代理商： | MT90210AL |
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Preliminary Information
MT90210
2-155
Applications
The MT90210 device may be used in applications
such as video and teleconferencing bridge cards and
voice processing cards for CTI (Computer Telephony
Integration). MT90210 transfers all TDM channels of
the ST-BUS interface into an external buffer. This
eliminates long answer time and permits fast DSP
access to ST-BUS, SCSA, MVIP or H-MVIP serial
TDM buses. The MT90210 component can be set in
H-MVIP mode with 24 fully bidirectional serial
streams that are configured in different data rate
combinations. Two data I/O subsets of H-MVIP are
provided by the MT90210: (i) the 24/2 mode in which
all 24 lines operate at 2.048 Mb/s and (ii) the mixed
rate of operation in which 16 streams operate at
2.048 Mb/s and the remaining 8 streams operate at
8.192 Mb/s data rates. When operating at 8.192
Mb/s rates, the MT90210 automatically terminates
the C16+ and C16- differential clocks specified by
the H-MVIP specifications. Figure 9 shows a
functional block diagram of the MT90210 in a typical
application.
Figure 9 - Functional Example of the MT90210 Application Circuit
Interface to PC Bus
and/or hardware control
R/W
L
MT90210
A
12L
-A
0L
I/O
8L
-I/O
0L
LP1
LP2
S0-S23
C16-
F0i
HC4
RBC
WBC
MD0
MD1
MD2
(Customer Specific Control
Logic)
R/W1
SEM
R
CE
R
R/W
R
OE
R
I/O
8R
-I/O
0R
A
12R
-A
0R
CE
L
OE
L
MS
A12-A0
P7-P0
OEser
Strobe
SEM
L
9
th
bit
R/W2
for monitoring purpose
CKout
PCLK
RDin
ST-BUS
SCSA
C16+
TMS,TCK
BOUNDARY
SCAN
CONNECTOR
SCLK
DUAL PORT RAM*
RST
TDI,TDO
TRST
13
MVIP
H-MVIP
8 kHz
Mode 4 & 5: 4.096 MHz
Mode 5: 16.384 MHz
Mode 5: 16.384 MHz
+5V
+5V
9
5
24
+5V
13
9
External
Mode 1: 4.096 MHz
Mode 2: 8.192 MHz
Mode 3
& 4: 16.384 MHz
PLLAGND
* Note: Dual Port RAM: Cypress part number: CY7B145-15 and IDT part number IDT7015
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