Microchip Technology Microsemi UG0677 - Page 87

Functional Description
Microsemi Proprietary and Confidential UG0677 User Guide Revision 9.0 80
Note: See PolarFire Device Register Map for more information.
pma_lane DES_CLK_CTRL DESMODE[2:0] Selects parallel bus
width of deserializer
interface.
Must select the 40-bit
wide bus mode for
8b10b functionality
(3’d7).
Must select the 32-
bit wide bus mode
for 64B6xB
functionality (3’d6).
SER_CLK_CTRL SERMODE[2:0] Selects parallel bus
width of serializer
interface.
DES_CDR_CTRL3 SLIP_DES_CD
R_SEL
Selects source of
CDR slip control.
Below setting is dependent on
RX_SLIP_BIT enabled with the XCVR
Configurator GUI. This has dependencies
on the users fabric IP
Must be 1’d0 so that
the fabric can control
the symbol alignment.
Should be 1’d1 so
that fabric cannot
control the symbol
alignment.
SLIP_DES_CD
R_EN
Optionally turns slip
control off.
Must be set to 1’d1. Must be set to 1’d0
Table 24 • System Registers Affecting 8B10B and 64B6xB Data Paths (continued)
Register
Page xls Register Name Field Name Description
Required Value for
8B10B
Required Value for
64B6xB