Preliminary Information
MT90210
ST-BUS
SCSA
MVIP
DUAL PORT RAM*
24
+5V
S0-S23
+5V
H-MVIP
SEM
SEM
L
R
Strobe
R/W2
CE
CE
OE
L
R
Mode 1: 4.096 MHz
Mode 2: 8.192 MHz
Mode 3
OE
L
R
& 4: 16.384 MHz
th
9
bit
SCLK
OEser
External
8 kHz
F0i
9
Mode 5: 16.384 MHz
P7-P0
I/O -I/O
8L 0L
C16+
13
Mode 5: 16.384 MHz
A
-A
A12-A0
12L 0L
C16-
HC4
Mode 4 & 5: 4.096 MHz
I/O -I/O
8R
0R
A
-A
12R 0R
9
R/W
MS
R/W1
L
13
+5V
MT90210
R/W
R
RDin
TRST
TDI,TDO
TMS,TCK
5
BOUNDARY
PCLK
SCAN
CONNECTOR
CKout
PLLAGND
RST
WBC
RBC
LP1
LP2
Interface to PC Bus
and/or hardware control
for monitoring purpose
(Customer Specific Control
Logic)
MD0
MD1
MD2
* Note: Dual Port RAM: Cypress part number: CY7B145-15 and IDT part number IDT7015
Figure 9 - Functional Example of the MT90210 Application Circuit
provided by the MT90210: (i) the 24/2 mode in which
Applications
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.
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
2-155
MITEL [ MITEL NETWORKS CORPORATION ]
