xrt94l33 Exar Corporation, xrt94l33 Datasheet - Page 235
xrt94l33
Manufacturer Part Number
xrt94l33
Description
Multi-channel, Multi-function Device Aggregates 3 Ds3/e3/sts-1 Into Oc3/stm-1
Manufacturer
Exar Corporation
Datasheet
1.XRT94L33.pdf
(465 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
xrt94l33IB
Manufacturer:
EXAR/艾科嘉
Quantity:
20 000
Company:
Part Number:
xrt94l33IB-L
Manufacturer:
Exar Corporation
Quantity:
10 000
- Current page: 235 of 465
- Download datasheet (3Mb)
xr
XRT94L33
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
Rev.1.2.0.
Figure 36) is “dashed” because controlling this signal is not necessary if the user has executed “STEP 1” above.
• Whenever the “external circuit” samples both the “TxPOHEnable_n” and “TxPOHFrame_n” output pins
“high”, then it should place the very first bit (e.g., the most significant bit) of the “outbound” J1 byte onto the
“TxPOH_n” input pin, upon the very next falling edge of “TxPOHClk_n”. This data bit will be sampled and
latched into the “Transmit STS-3c POH Processor” block circuitry, upon the very next rising edge of
“TxPOHClk_n”.
• Afterwards, the “external circuit” should serially place the remaining seven bits (of the J1 byte) onto the
“TxPOH_n” input pin, upon each of the next seven falling edges of “TxPOHClk_n”.
• The “external circuit” should then revert back to continuously sampling the states of the “TxPOHEnable_n”
and “TxPOHFrame_n” output pins and repeat the above-mentioned process.
2.2.7.3.5
SUPPORT/HANDLING OF THE C2 BYTE
The Transmit STS-3c POH Processor block permits the user to control the value of the C2 byte by either of
the following options.
• Setting and controlling the “outbound” C2 Byte via Software
• Setting and controlling the “outbound” C2 Byte via the “TxPOH Input Port”
The details and instructions for using either or these features are presented below.
2.2.7.3.5.1
Setting and Controlling the Outbound C2 Byte via Software
The Transmit STS-3c POH Processor block permits the user to specify the contents of the C2 byte, within the
“outbound” STS-3c SPE via software command.
The user can configure the Transmit STS-3c POH Processor block to accomplish this by performing the
following steps.
STEP 1 – Write the value “0” into Bit 2 (C2 Insertion Type) within the “Transmit STS-3c Path – SONET
Control Register – Byte 0”, as depicted below.
235
Related parts for xrt94l33
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
BiCMOS Fixed, Quad, Voltage Output, Single or Dual Supply 8-Bit Digital-to-Analog Converter
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Voltage-Controlled Oscillator
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
INTEGRATED LINE TRANSMITTER
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Monolithic Function Generator
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
CMOS Microprocessor Compatible Double-Buffered 12-Bit Digital-to-Analog Converter
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
CMOS 6 BIT HIGH SPEED ANALOG TO DIGITAL CONVERTER
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
8-Channel, Voltage Output 10 MHz Input Bandwidth 8-Bit Multiplying DACs with Serial Digital Data Por
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
15 V CMOS Multiplying10-Bit Digital-to-Analog Converter
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
Monolithic Function Generator
Manufacturer:
Exar Corporation
Datasheet:
Part Number:
Description:
CMOS, 6-Bit High-Speed Analog-to-digital Converter
Manufacturer:
Exar Corporation
Datasheet: