DS0147 datasheet(74/128 Pages) MICROCHIP

74 / 128 page

Unit

–1 Max

–1 Typ

–1 Min

STD Max

STD Typ

STD Min

Symbol

Parameter

Gbps

3.2

0.25

3.2

0.25

FRxRateDC

Rx data rate

when DC

coupled

Gbps

1.25

FTXRateOOB

Rx OOB (de-

serializer

bypass) da-

ta rate

GHz

6.35

1.6

5.1563

1.6

FTXPLL

TXPLL out-

put frequen-

Gbps

10.3125

0.25

10.3125

0.25

FRXCDR

Rx CDR

mode

Gbps

12.7

3.0

10.3125

3.0

FRXAUTOCAL

Rx DFE and

CDR auto-

calibration

modes

Gbps

12.7

3.0

10.3125

3.0

FRXEyeMon

Rx Eye Mon-

itor mode

[Tx|Rx]_CLK

Cycles

MPWPCS_RES-

PCS reset

minimum

pulse width

[Tx|Rx]_CLK

Cycles

MPWPMA_RE-

SET

PMA reset

minimum

pulse width

1. The reference clock is required to be a minimum of 75 MHz for data rates of 10 Gbps and above.

2. For data rates greater than 10.3125 Gbps, VDDA must be set to 1.05 V mode. See supply tolerance in

the section Recommended Operating Conditions.

3. The Tx PLL rate is between 0.5x to 5.5x the Tx data rate. The Tx data rate depends on per XCVR lane Tx

post-divider settings.

4. Minimum pulse width should reference TX_CLK when Tx only or both Tx and Rx are used. Reference

RX_CLK if only Rx is used.

6.5.2

Transceiver Reference Clock Performance

The following table describes performance of the transceiver reference clock.

Table 84 • PolarFire SoC Transceiver Reference Clock AC Requirements

Unit

–1 Max

–1 Typ

–1 Min

STD Max

STD Typ

STD Min

Symbol

Parameter

MHz

400

FTXREFCLK

Reference

clock input

rate

1, 2

MHz

156

FXCVRREFCLKM-

AX CASCADE

Reference

clock input

rate

1, 2, 3

Microsemi Proprietary and Confidential. DS0147 Revision 1.0

AC Switching Characteristics

DS0147 데이터시트(PDF) 74 Page - Microchip Technology

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