ocx1601 ETC-unknow, ocx1601 Datasheet - Page 9

• Manufacturer Part Number: ocx1601
• Description: Ocx1601 Crosspoint Switch
• Manufacturer: ETC-unknow

RCI[3:0]
Fairchild Semiconductor
1.2 Output Control Signals
1.3 RapidConfigure Interface
0000
0001
0010
0011
0100
RapidConfigure (RC) is a 23 signal parallel interface that is used to program the OCX1601 device. The 23
pins are allocated as follows:
RCA[6:0] = RapidConfigure Address A. RCA are input pins.
RCB[6:0] = RapidConfigure Address B. RCB are input pins.
RCI[3:0] = RapidConfigure Instruction Bits
RCO[2:0] = RapidConfigure Readback. RCO are output pins.
RC_CLK# = RapidConfigure Clock
RC_EN# = RapidConfigure Cycle Enable (state is sensed on the negative edge of clock)
1.3.1
Output Port
RCA[6:0]
Address
X
X
Every output port of the OCX1601 has a global Output Enable signal (OE#). All output buffers
have output enables that have programmable polarity and are individually configurable.
Additionally each output can be permanently enabled (always ON) or disabled (always OFF)
which is useful for applications which need to tri-state outputs (for example when using multiple
chips in expansion mode) or for power saving in designs that do not need to use all the outputs
available.
Two control bits are used to control the function of the output enable.
RapidConfigure Programming Instructions
The RC interface supports both write and read types of operations:
Table 2
1. Write Operations (reset crosspoint and Input or Output Buffer (IOB), configure an
2. Read Operations (Output Buffer and crosspoint configuration read).
RCB[6:0]
Input Port
Address
Output Buffer, connect/disconnect crosspoint)
Data
X
RapidConfigure Programming Instructions
RCO[2:0]
OCX1601 Crosspoint Switch—Advanced Datasheet
[Rev. 1.8] 3/21/02
Set Array to Broadcast
Configure an Output
Reset Crosspoint
Instruction
Reserved
Reserved
Buffer
Array
mode
Reset, along with an Update operation
(UPDATE# pin or Update command) resets
the entire crosspoint array to no connect.
All Output Buffers remain unchanged by
this operation.
Connects the input selected by RCB[6:0] to
all output ports and disconnects all other
inputs. The Global Update (UPDATE#) pin
must be held high during Broadcast mode.
Activating the Global Update pin returns
the array to the previous program
condition.
Program an Output Buffer specified by
RCA[6:0].
See Table 4 for RCB[6:0] bit assignment
and buffer functionality.
Description
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