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Xcvr_tx_vod_pre_emp_ctrl_src – Altera Transceiver PHY IP Core User Manual

Page 646

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Description

Differential output voltage setting. The values are monotonically increasing with the driver main tap

current strength.
Note: This parameter must be set in conjunction with

XCVR_TX_PRE_EMP_1ST_POST_TAP

,

XCVR_TX_PRE_EMP_2ND_POST_TAP

, and

XCVR_TX_PRE_EMP_PRE_TAP

. All combinations of these

settings are not legal. Refer to the Stratix V Device Datasheet for more information.

Options

• 0–63

50

Assign To

Pin - TX serial data

Related Information

Stratix V Device Datasheet

XCVR_TX_VOD_PRE_EMP_CTRL_SRC

Pin Planner and Assignment Editor Name

Transmitter V

OD

Pre-emphasis Control Source

Description

When set to

DYNAMIC_CTL

, the PCS block controls the V

OD

and pre-emphasis coefficients for PCI

Express. When this assignment is set to

RAM_CTL

the V

OD

and pre-emphasis are controlled by other

assignments, such as

XCVR_TX_PRE_EMP_1ST_POST_TAP

.

Options

DYNAMIC_CTL: for PCI Express

RAM_CTL: for all other protocols

Assign To

Pin - TX serial data

19-52

XCVR_TX_VOD_PRE_EMP_CTRL_SRC

UG-01080

2015.01.19

Altera Corporation

Analog Parameters Set Using QSF Assignments

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