OC-192/STM-64 1550nm Transponder

40km, 65km and 80km transmission

Preliminary Data Sheet

July 10, 2005

Fiberxon Proprietary and Confidential, Do Not Copy or Distribute

Page 8 of 14

Digital Control Signal

Table 12 - Input Digital signals

Function

Symbol

Level

Description

Note

L

Module reset

Module

RESET

MOD_RESET

LVTTL

H

Normal operation

Reset both Tx and Rx section

(LVTTL with pull-up resistor)

L

Enable

Diagnostic

Loop-back

DLOOPENB

LVTTL

H

Normal operation

(LVTTL with pull-up resistor)

L

Enable

Line

Loop-back

LLOOPENB

LVTTL

H

Normal operation

(LVTTL with pull-up resistor)

Transmitter

0,0

10.3125Gbps

0,1

11.049/11.095/

11.318Gbps

1,0

10.519/10.664/

10.709Gbps

Select

serial

data rate

TxRATESEL1, 0

LVTTL

1,1

9.95328Gbps

(LVTTL with pull-up resistor)

L

1/64 data-rate

Select

the

frequency

of

TxREFCLK

TxREFSEL

LVTTL

H

1/16 data-rate

(LVTTL with pull-up resistor)

L

1/16 data-rate

Select

the

frequency

of

TxPICLK

TxPICLKSEL

LVTTL

H

1/32 data-rate

(LVTTL with pull-down resistor)

L

Enable

Enable internal

Line Timing

TxLINETIMSEL

LVTTL

H

Normal operation

On multi-rate units without jitter

clean up, this pin is ignored.

(LVTTL with pull-up resistor)

0,0

Delays 915ps

0,1

Delays 1015ps

1,0

Delays 715ps

Select delay of

TxPICLK

TxSKEWSEL0,1

LVTTL

1,1

Delays 815ps

(LVTTL with pull-up resistor)

L

Normal operation

Enable/Disable

Laser

LsENABLE

LVTTL

H

Laser disabled

(LVTTL with pull-down resistor)

L

MUX reset

Asynchronous

system reset

TxRESET

LVTTL

H

Normal operation

(LVTTL with pull-up resistor)

L

MUX FIFO reset

MUX

FIFO

reset

TxFIFORES

LVTTL

H

Normal operation

Internally the FIFO reset is

connected to TxRESET and

TxFIFOERR. TxFIFOERR will

initiate a FIFO reset

(LVTTL with pull-up resistor)