ADTRAN 1200305L1 system manual Modules USSI-2 PLL/FIFO Port, Modules USSI-2 PLL/FIFO PLL/FIFO

Section 4, User Interface Guide ATLAS 550 System Manual

MODULES (USSI-2) > PLL/FIFO > PORT

Read security: 5

Indicates the operating port. There are 2 available interfaces on the Dual USSI Option Module.

MODULES (USSI-2) > PLL/FIFO > PLL/FIFO

Read security: 5

Displays the state of the PLL and FIFO systems.

LOCK	PLL is locked (This is required to transfer data.)
RXE	Receive data FIFO empty.
RXF	Receive data FIFO full.
TXE	Transmit data FIFO empty.
TXF	Transmit data FIFO full.

MODULES (USSI-2) > CONFIGURATION

Write security: 3; Read security: 5

All of the following configurable parameters apply to the individual USSI ports.

MODULES (USSI-2) > CONFIGURATION > PRT

Read security: 5

Displays the port number. There are 2 available interfaces on the Dual USSI Option Module.

MODULES (USSI-2) > CONFIGURATION > PORT NAME

Write security: 3; Read security: 5

Accepts any alpha-numeric name up to 16 characters long, to uniquely identify each port on the Dual USSI Option Module.

MODULES (USSI-2) > CONFIGURATION > CLK +/-

Write security: 3; Read security: 5

Controls the clock used by the ATLAS 550 to accept the transmit (TX) data from the DTE. This is usually set to NORMAL. If the interface cable is long, causing a phase shift in the data, the clock can be set to INVERTED. This switches the phase of the clock, which compensates for a long cable.

MODULES (USSI-2) > CONFIGURATION > DATA

Write security: 3; Read security: 5

Controls the inverting of the DTE data. This inversion can be useful when operating with a high-level data link control (HDLC) protocol (often used as a means to ensure 1s density). Select either NORMAL or INVERTED. Data inversion configuration must match at both ends of the circuit.

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