MT90870 Zarlink Semiconductor, Inc., MT90870 Datasheet - Page 8

• Manufacturer Part Number: MT90870
• Description: Flexible 12k Digital Switch (F12kDX)
• Manufacturer: Zarlink Semiconductor, Inc.

MT90870
Pin Description (continued)
8
ODE
BORS
LORS
NC
Name
A12
K2
K19
A16, B16,
Y12, Y13,
Coordinates
Package
Output Drive Enable (5V Tolerant, Internal pull-up).
An asynchronous input providing Output Enable control to the BSTo0- 31,
LSTo0-15, BCSTo0-3 and LCSTo0-1 outputs.
When LOW, the BSTo0-31 and LSTo0- 31 outputs are driven high or high
impedance (dependent on the BORS and LORS pin settings respectively)
and the outputs BCSTo0-3 and LCSTo0-1 are driven low.
When HIGH, the outputs BSTo0- 31, LSTo0-15, BCSTo0-3 and LCSTo0-1
are enabled.
Backplane Output Reset State (5V Tolerant, Internal pull-down).
When this input is LOW the device will initialize with the BSTo0-31 outputs
driven high, and the BCSTo0-3 outputs driven low. Following initialization,
the Backplane stream outputs are always active and a high impedance
state, if required on a per-channel basis, may be implemented with
external buffers controlled by outputs BCSTo0-3.
When this input is HIGH, the device will initialize with the BSTo0-31
outputs at high impedance and the BCSTo0-3 outputs driven low.
Following initialization, the Backplane stream outputs may be set active or
high impedance using the ODE pin, or on a per-channel basis with the BE
bit of the Backplane Connection Memory.
Local Output Reset State (5V Tolerant, Internal pull-down).
When this input is LOW, the device will initialize with the LSTo0-15
outputs driven high and the LCSTo0-1 outputs driven low. Following
initialization, the Local stream outputs are always active and a high
impedance state, if required on a per-channel basis, may be
implemented with external buffers controlled by the LCSTo0-1 outputs..
When this input is HIGH, the device will initialize with the LSTo0-15
outputs at high impedance and the LCSTo0-1 outputs driven low..
Following initialization, the Local stream outputs may be set active or high
impedance using the ODE pin, or on a per-channel basis with the LE bit
of the Local Connection Memory.
No Connect
Description
Preliminary Information