DS0147 datasheet(17/128 Pages) MICROCHIP

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Unit

Max

Min

Symbol

Parameter

0.2

VDD_XCVR_CLK

Transceiver reference

clock supply

0.2

XCVRVREF

Global VREF for

transceiver reference

clocks

Note: For proper operation of programming recovery mode, if a VDD supply brownout occurs during

programming, a minimum supply ramp down time for only the VDD supply is recommended to be 10 ms

or longer by using a programmable regulator or on-board capacitors.

5.2.2.2

Hot Socketing

The following table lists the hot socketing DC characteristics over recommended operating conditions.

Table 13 • Hot Socketing DC Characteristics over Recommended Operating Conditions

Condition

Unit

Max

Typ

Min

Symbol

Parameter

VDDA = 0 V

±4

XCVRRX_HS

Current per

transceiver Rx

input pin (P or

N single-ended)

, 2

VDDA = 0 V

±10

XCVRTX_HS

Current per

transceiver Tx

output pin (P or

N single-ended)

VDD_XCVR_CLK = 0

±1

XCVRREF_HS

Current per

transceiver refer-

ence clock input

pin (P or N sin-

gle-ended)

VDDIx = 0 V

±1

IGPIO_HS

Current per GPI-

O pin (P or N

single-ended)

Hot socketing is

not supported

in HSIO.

Current per HSI-

O pin (P or N

single-ended)

1. Assumes device is powered-down, all supplies are grounded, AC-coupled interface, and input pin pairs

are driven by a CML driver at the maximum amplitude (1 V pk–pk) that is toggling at any rate with PRBS7

data.

2. Each P and N transceiver input has less than the specified maximum input current.

3. Each P and N transceiver output is connected to a 40 Ω resistor (50 Ω CML termination—20% tolerance)

to the maximum allowed output voltage (VDDAmax + 0.3 V = 1.4 V) through an AC-coupling capacitor with

all PolarFire SoC device supplies grounded. This shows the current for a worst-case DC coupled interface.

As an AC-coupled interface, the output signal will settle at ground and no hot socket current will be

seen.

4. VDD_XCVR_CLK is powered down and the device is driven to –0.3 V < VIN < VDD_XCVR_CLK.

Microsemi Proprietary and Confidential. DS0147 Revision 1.0

DC Characteristics

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