Advance Information
MT90863
Pin Description (continued)
128 MQFP
Pin#
144 BGA
Pin#
Name
Description
18-25
G1, H1, H2,
H3, J2, J1,J3,
K1
A0 - A7 Address 0 - 7 (5V Tolerant Input): These lines provide the A0 to A7
address lines to the internal memories.
26
27
28
K2
DS
R/W
CS
Data Strobe (5V Tolerant Input): This active low input works in
conjunction with CS to enable the read and write operations.
L2
L1
Read/Write (5V Tolerant Input): This input controls the direction of
the data bus lines (D0-D15) during a microprocessor access.
Chip Select (5V Tolerant Input): Active low input used by a
microprocessor to activate the microprocessor port.
31-38,
40-47
M1, N1, M2, N2,
M3, L4, N3, L5, D8 - D15 of the microprocessor port.
D0 - 7,
Data Bus 0 -15 (5V Tolerant I/O): These pins form the 16-bit data bus
M4, N4, M5,
L6, M6, N5, N6,
M7,
48
N7
DTA
Data Transfer Acknowledgment (5V Tolerant Three-state Output):
This active low output indicates that a data bus transfer is complete. A
pull-up resistor is required to hold a HIGH level when the pin is tri-
stated.
51-54
N8, M8, N9,
N10
STi0 - 3 Serial Input Streams 0 to 3 (5V Tolerant Inputs): In 2Mb/s or
Subrate Switching mode, these inputs accept data rates of 2.048 Mb/s
with 32 channels per stream. In 8Mb/s mode, these inputs accept data
rates of 8.192 Mb/s with 128 channels per stream.
55-62
63
M9, N11, L9,
M10, L10, N12,
M11, N13
STi4 - 11 Serial Input Streams 4 to 11 (5V Tolerant Inputs): In 2Mb/s or Sub-
rate Switching mode, these inputs accept data rates of 2.048Mb/s
with 32 channels per stream.
L11
STi12
Serial Input Streams 12 (5V Tolerant Input): In 2Mb/s mode, this
input accepts data rate of 2.048Mb/s with 32 channels per stream
respectively. In Sub-rate Switching mode, this pin accepts 2.048Mb/s
with 128 channels per stream for Sub-rate switching application.
64-66
69
M12, M13, L12 STi13 - 15 Serial Input Streams 13 to 15 (5V Tolerant Inputs): In 2Mb/s mode,
these inputs accept a data rate of 2.048Mb/s with 32 channels per
stream.
L13
ODE
Output Drive Enable (5V Tolerant Input): This is the output enable
control for the STo0 to STo15 serial outputs and STio0 to STio31 serial
bidirectional outputs.
70-73
K13, K12, J13,
J12
STo0 - 3 Serial Output Streams 0 to 3 (5V Tolerant Three-state Outputs): In
2Mb/s or Sub-rate Switching mode, these outputs have data rates of
2.048 Mb/s with 32 channels per stream respectively. In 8Mb/s mode,
these outputs have data rates of 8.192 Mb/s with 128 channels per
stream
74-77,
80-83
H11, H13, H12, STo4 - 7, Serial Output Streams 4 to 11 (5V Tolerant Three-state Outputs):
G13, G12, F13, STo8 - 11 In 2Mb/s or Sub-rate Switching mode, these outputs have data rates of
F12, E13
2.048Mb/s with 32 channels per stream
5
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