VSC8658 datasheet(59/95 Pages) MICROSEMI

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Configuration

VMDS-10242 VSC8658 Datasheet Revision 4.1

5.3.12

VeriPHY Control 3

The register at address 26E consists of the third of the three device registers that provide control over

VeriPHY diagnostics features. Specifically, this register provides information about the termination status

(fault condition) for all four link partner pairs. The following table shows the readouts you can expect.

The following table shows the meanings for the various fault codes.

5.3.13

Reserved Extended Address Space

The bits in the extended register page space at address 27E (0x1B) and 28E (0x1C) are reserved.

5.3.14

Ethernet Packet Generator Control 1

The EPG control register provides access to and control of various aspects of the EPG testing feature.

There are two, separate EPG control registers. The following table shows the setting available in the first

Table 48 •

VeriPHY Control Register 3, Address 26E (0x1A)

Bit

Name

Access

Description

Default

15:12

Pair A (1 and 2)

termination status

Termination fault for pair A (1 and 2)

0x00

11:8

Pair B (3 and 6)

termination status

Termination fault for pair B (3 and 4)

0x00

7:4

Pair C (4 and 5)

termination status

Termination fault for pair C (4 and 5)

0x00

3:0

Pair D (7 and 8)

termination status

Termination fault for pair D (7 and 8)

0x00

Table 49 •

VeriPHY Control Register 3 Fault Codes

Code

Denotes

0000

Correctly terminated pair

0001

Open pair

0010

Shorted pair

0100

Abnormal termination

1000

Cross-pair short to pair A

1001

Cross-pair short to pair B

1010

Cross-pair short to pair C

1011

Cross-pair short to pair D

1100

Abnormal cross-pair coupling with pair A

1101

Abnormal cross-pair coupling with pair B

1110

Abnormal cross-pair coupling with pair C

1111

Abnormal cross-pair coupling with pair D

Table 50 •

EPG Control Register 1, Address 29E (0x1D)

Bit

Name

Access

Description

Default

EPG enable

R/W

1 = Enable EPG

EPG run or stop

R/W

1 = Run EPG

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