ocx1601 ETC-unknow, ocx1601 Datasheet - Page 12

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

OCX1601 Crosspoint Switch—Advanced Datasheet
1.4 Serial Interface Configuration Controller
12
The Output port attributes and the Switch Matrix connections can be programmed using the serial bus. The
RapidConfigure Interface can be enabled or disabled using the serial bus.
The serial interface mode is always available for configuration regardless of whether the RapidConfigure
mode is enabled or disabled. However, proper care must be taken when switching between Serial Interface
and RapidConfigure for configuring the devices. Before attempting to change Switch Matrix connections
or output port configuration through the Serial Interface, the user must first ensure that the RapidConfigure
mode is disabled by using the Serial Interface serial mode to set the RCE bit to zero in the Mode Control
Register.
1.4.1
1.4.2
1.4.3
1.4.4
Serial Interface
The dedicated Serial interface has five pins: Serial Data Out (SDO), Serial Mode Select (SMS),
Serial Data In (SDI), Serial Reset (SRST#), and Serial Clock (SCLK), for device configuration
and verification. The Fairchild supplied software will automatically generate the necessary
bitstream from a higher-level textual description of the required configuration. Data on the SDI
and SMS pins are clocked into the device on the rising edge of the SCLK signal, while the valid
data appears on the SDO pin after the falling edge of SCLK. For more detailed information on
Serial programming, refer to the OCX Family Register Programming Manual.
Output Port Configuration
Output port configuration is accomplished by loading the appropriate bitstream into the
programming registers present at each Output port. The serial bus is used to load configuration
data into the Output port programming registers, one Output port at a time.
Switch Matrix Configuration
The contents of the SRAM cells controlling Switch Matrix connection can be modified using the
Serial interface. This is accomplished by loading the configuration data, one word at a time, into
the SRAM cells in the Switch Matrix.
Mode Control Register Configuration
The OCX1601 contains a single bit Mode Control Register used to store user flags for
RapidConfigure Enable (RCE). These are required for proper functioning of the device. The
contents of this register can be changed using the Serial interface and a special Serial instruction.
RCE
0
1
Table 5
[Rev. 1.8] 3/21/02
RapidConfigure interface disabled (OFF)
RapidConfigure interface enabled (ON)
Mode Control Register
Mode
Fairchild Semiconductor