MT90810 データシートの表示（PDF） - Mitel Networks
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MT90810 Datasheet PDF : 34 Pages
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Preliminary Information
MT90810
Pin Description
Pin #
58, 60, 63, 67, 70,
72, 74, 77
59, 61, 64, 68, 71,
73, 75, 78
80, 82, 83, 85
87, 88, 89, 90
4
55
56
54
53
91
92
94
95
97
98
100, 1, 2, 3, 5, 20,
33, 46, 57, 69, 81,
96
6, 7, 8, 9, 14, 28,
39, 51, 62, 76, 84,
99
19
35, 36, 37, 38, 42,
43, 44, 45
Name
DSo[0:7]
DSi[0:7]
LDO[0:3]
LDI[0:3]
CSTo
F0b
C4b
C2o
SEC8K
EX_8KA
EX_8KB
FRAME
CLK8
CLK4
CLK2
FGA[0:11]
FGB[0:11]
RESET
AD[0:7]
Description
MVIP DSo Streams (Bidirectional CMOS). 2.048Mb/s serial data
streams conforming to ST-BUS serial data stream specifications.
MVIP DSi Streams (Bidirectional CMOS). 2.048Mb/s serial data
streams conforming to ST-BUS serial data stream specifications.
Local Output Serial Streams (Output). Serial data streams
programmable to 2.048, 4.096 or 8.192Mb/s data rates.
Local Input Serial Streams (TTL Input). Serial data streams
programmable to 2.048, 4.096 or 8.192 Mb/s data rates.
Control ST-BUS Output (Output). This is a 1.024Mb/s output. The
state of each bit in this stream is determined by the CSTo bit in
connection memory high.
MVIP F0 signal (CMOS Input/Output). ST-BUS 8kHz framing signal
MVIP C4 signal (CMOS Input/Output). ST-BUS 4.096MHz clock
MVIP C2 signal (Output). ST-BUS 2.048MHz clock. This pin is
automatically set to high impedance when it is not driven.
MVIP SEC8K signal (CMOS Input/Output). A secondary 8kHz signal
used either as an input source to the on-chip digital PLL or as an
output to the MVIP bus.
External 8kHz input A (TTL Input).
External 8kHz input B (TTL Input).
Local Frame Output Signal (Output). This 8kHz framing signal has a
duty cycle and period equal to the MVIP F0 signal.
8MHz Local Output Clock (Output). This is a 8MHz clock.
4MHz Local Output Clock (Output). This 4MHz clock has a duty
cycle and period equal to the MVIP C4 signal.
2MHz Local Output Clock (Output). This 2MHz clock has a duty
cycle and period equal to the MVIP C2 signal.
Frame Group A framing signals (Output). Programmable framing
signals. The frame group outputs are determined by mode bits in the
frame register to be either programmed outputs, output drive enables
for DSo, or output framing pulses for use with local serial data
streams.
Frame Group B framing signals (Output). Programmable framing
signals. The frame group outputs are determined by mode bits in the
frame register to be either programmed outputs, output drive enables
for DSi, or output framing pulses for use with local serial data streams.
Chip Reset (Schmitt Input). This active low reset clears all internal
registers, connection memory and data memory
Microprocessor Address/Data Bus (Bidirectional TTL).
Microprocessor access to internal registers, connection and data
memories.
In non-multiplexed mode: data bus.
In multiplexed mode: multiplexed address and data bus.
2-147
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