ocx256 ETC-unknow, ocx256 Datasheet - Page 11

• Manufacturer Part Number: ocx256
• Description: Ocx256 Crosspoint Switch
• Manufacturer: ETC-unknow

Fairchild Semiconductor
1.3 RapidConfigure Interface
RCI[3:0]
Cycle 1
0000
0001
0010
0011
0100
0101
RapidConfigure (RC) is a 25 signal parallel interface that is used to program the OCX256 device. The 25
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[4:0] = RapidConfigure Readback. RCO are output pins.
RC_CLK# = RapidConfigure Clock
RC_EN# = RapidConfigure Cycle Enable (state is sensed on negative edge of clock)
1.3.1
Output Port
Output Port
RCA[6:0]
Address
Address
RapidConfigure Programming Instructions
The RC interface supports both write and read types of operations:
X
X
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
Input Port
Output Buffer, connect/disconnect crosspoint)
Table 3
Address
Address
Data
X
RapidConfigure Programming Instructions
RCO[4:0]
OCX256 Crosspoint Switch—Advanced Datasheet
[Rev. 2.0] 3/21/02
X
Set Array to Broadcast
Readback Crosspoint,
Configure an Output
Output Buffer status
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 5 for RCB[6:0] bit assignment
and buffer functionality.
This is a two-cycle instruction.
Specify the crosspoint connect status at
output location specified by RCA[6:0] to
the input location specified by RCB[6:0].
Description
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