TXC-06312BIOG Transwitch Corporation, TXC-06312BIOG Datasheet - Page 122

• Manufacturer Part Number: TXC-06312BIOG
• Manufacturer: Transwitch Corporation

Specifications of TXC-06312BIOG

• Lead Free Status / Rohs Status: Supplier Unconfirmed

PRELIMINARY TXC-06312B-MB, Ed. 2
June 2005
PHAST-12N Device
DATA SHEET
TXC-06312B
RSOH_DCC_Select
11.8 DCC PORT INTERFACE
0 (Default)
11.7.2 Receive TOH Port Interface
11.8.1 Transmit DCC Port Interface
1
All received RSOH and MSOH bytes are sent over a serial Receive TOH Port interface. The
values sent out on this interface are the raw, unprocessed values, except for B1 and B2,
where an error mask is calculated (ones indicate the errored bits).
The Receive TOH Port consists of following leads:
The Receive TOH Port protocol is as follows (see
Note: Configuration of the Receive TOH Port interface is done in the memory map of the
TOH and DCC Port (see
TOH_Port_Enable setting. No bytes will be sent out when this port is disabled.
The Transmit and the Receive DCC Port interfaces provide an interface to the RS or MS DCC
bytes. The interface is a constant bit-rate serial interface, each consisting of a clock and a
data line.
The Transmit DCC ports are constant bit-rate ports that provide a possible source for either
the RS or the MS DCC bytes in the outgoing STM-4 or the four STM-1 frames. In STM-4
mode, only the first DCC Port is active.
Each Transmit DCC port can be configured for RS DCC bytes or MS DCC bytes:
The Transmit DCC Port consists of following leads:
• Output Receive TOH Port Clock TOHRXCLK
• Output Receive TOH Port Address Latch Enable TOHRXALE
• Output Receive TOH Port Address TOHRXADDR
• Output Receive TOH Port Data Latch Enable TOHRXDLE
• Output Receive TOH Port Data TOHRXDATA
1. The 10-bit address for the transmitted byte is output on TOHRXADDR, most signifi-
2. A one cycle gap is left open.
3. The 8-bit data of the transmitted TOH byte is output on TOHRXDATA. During this time
-
High Order Pointer Tracking, Retiming and Pointer Generation
cant bit first. During this time the Address Latch Enable TOHRXALE is asserted.
the Data Latch Enable TOHRXDLE is asserted.
MS DCC bytes mode: the Transmit DCC port will request the MS DCC bytes.
RS DCC bytes mode: the Transmit DCC port will request the RS DCC bytes.
Table
32). The Receive TOH Port interface has to be enabled by the
Mode
Figure
8):
-
1 2 2 o f 2 0 2