MT90210 Просмотр технического описания (PDF) - Mitel Networks
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MT90210 Datasheet PDF : 27 Pages
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Preliminary Information
MT90210
ST-BUS
SCSA
24
MVIP
S0-S23
H-MVIP
DUAL PORT RAM*
+5V
+5V
SEML
SEMR
Mode 1: 4.096 MHz
Mode 2: 8.192 MHz
Mode 3
& 4: 16.384 MHz
8 kHz
Mode 5: 16.384 MHz
Mode 5: 16.384 MHz
Mode 4 & 5: 4.096 MHz
SCLK
F0i
C16+
C16-
HC4
Strobe
R/W2
OEser
9th bit
9
P7-P0
13
A12-A0
R/W1
+5V
MT90210
CEL
OEL
CER
OER
External
I/O8L-I/O0L
A12L-A0L
I/O8R-I/O0R
A12R-A0R
R/WL
MS
R/WR
9
13
BOUNDARY
5
SCAN
CONNECTOR
TRST
TDI,TDO
TMS,TCK
PLLAGND
LP1
LP2
RDin
PCLK
CKout
RST
WBC
RBC
MD0
MD1
MD2
for monitoring purpose
Interface to PC Bus
and/or hardware control
(Customer Specific Control
Logic)
* Note: Dual Port RAM: Cypress part number: CY7B145-15 and IDT part number IDT7015
Figure 9 - Functional Example of the MT90210 Application Circuit
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.
2-155
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