VSC6134
Datasheet
Table 418. Global MPU Register 20 - SerDes Control Register (continued)
Reset
Value
Bit
Name
Access
Description
14
LINE_DATA_LB
R/W
Configuration bit used to create a loopback from
RXDATA0[15:0] to TXDATA0[15:0].
0: No loopback.
0
1: Loopback mode.
13
12
11
10
9
AL_SER_RSTN
DC_SER_RSTN
AC_DES_RSTN
DL_DES_RSTN
CLIENT_CLOCK_LB
R/W
R/W
R/W
R/W
R/W
Active low reset bit to reset the high speed serializer
on the add line side interface. When this bit is set to
0, the mux is reset.
1
1
1
1
0
Active low reset bit to reset the high speed serializer
on the drop client side interface. When this bit is set
to 0, the mux is reset.
Active low reset bit to reset the high speed
deserializer on the add client side interface. When
this bit is set to 0, the mux is reset.
Active low reset bit to reset the high speed
deserializer on the drop line side interface. When this
bit is set to 0, the mux is reset.
Configuration bit used to create a loopback from
RXCLK1 to TXCLK1. This bit can work in
conjunction with bit 15 of this register.
0: No loopback.
1: Loopback mode.
8
7
LINE_CLOCK_LB
R/W
R/W
Configuration bit used to create a loopback from
RXCLK0 to TXCLK0. This bit can work in
conjunction with bit 14 of this register.
0: No loopback.
0
0
1: Loopback mode.
PAYLOAD_EXTRACT
This bit is used to control extraction of a SONET or
ethernet payload from an OTU frame for monitoring
purposes. The bit should be set to a 1 in any of the
OTU-to-OTU modes with payload monitoring.
0: No payload extracted for monitoring.
1: Payload is extracted for monitoring.
6
5
CLIENT_LOOPTEST
R/W
R/W
R/W
RO
Configuration bit used to create a midpath loopback
of client data.
0: No loopback.
0
0
1: Client Midpath Loopback mode.
ADD_WORD_SWAP_EN(1
Configuration bit used to reverse the MSB to LSB
order of the client side interface data (SFI-4 input).
0: No add client word swaping
)
1: Add client word swaping
4
DROP_WORD_SWAP_EN(1)
Configuration bit used to reverse the MSB to LSB
order of the client side interface data (SFI-4 output).
0: No drop client word swaping
0
1: Drop client word swaping
3:0
Reserved
0000
1. Enable the swap for the Ethernet style PHY when the LSB is transmitted first.
380 of 438
VMDS-10185 Revision 4.0
July 2006
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
