XRS10L120 Datasheet, PDF (26/52 Pages) Exar Corporation – SERIAL ATA II: 1:2 PORT MULTIPLIER

XRS10L120
PRELIMINARY
SERIAL ATA II: 1:2 PORT MULTIPLIER
TABLE 9: TRANSMIT/RECEIVE LANE REGISTERS (MDIO DEVICE 1 AND 2)
REV. P1.0.1
ADDRESS
HEX
BIT(S)
NAME
R/W
DEFAULT
DESCRPTION
N.0004
N.0024
7:0
xCDROffs_F0[7:0]
RW
7:0
xCDROffs_F1[7:0]
0x40
2’s complement offset for Clock data recovery
Offset = CDRoff*tbit/128
Value of xCDROffs0/1 when DIV2CLK=0
N.0005
7:0
N.0025
7:0
Rx_Offset0
R/W
Rx_Offset1
2's complement offset for Clock data recovery
Offset = CDRoff*tbit/256
Value of xCDROffs0/1 when DIV2CLK=1
N.0006
7
xCDRmetamode
RO
N.0026
6
xCDRrndT
RW
0
Selection of clock to use on FSM
1
Randomizes tie breaker
5
xCDRclkmode
RW
0
selects clock to use for FSM
4
xCDRrotate
RW
0
Enables CDR rotation
3:0
xCDRinc0[3:0]
RW
xCDRinc1[3:0]
0x2 Increment for CDR
N.0007
N.0027
7:5
xCDRupdnsw[2:0]
RW
4:0
xCDRincF0[4:0]
RW
xCDRincF1[4:0]
000
00100
Direction of count on FSM
Fast increment size for CDR
N.0008
7
N.0028
6
Reserved
xCDRenF
RO
-
Reserved
1
5
xCDRmisc
R/W
0
4:0
xCDRlimHF0[4:0]
RW
xCDRlimHF1[4:0]
00111
N.0009
7
N.0029
6
Reserved
RO
xCDRmult2F_F
RW
-
Reserved
0
Value of xCDRmult2F when DIV2CLK=0
5
xCDRmult2F_H
RW
1
Value of xCDRmult2F when DIV2CLK=1
4:0
xCDRlimLF0[4:0]
RW
xCDRlimLF1[4:0]
0x18
N.000A
N.002A
7:6
Reserved
RO
5:0 MinBurstWidth0[5:0] R/W
MinBurstWidth1[5:0]
-
Reserved
000100 Lower bound count of activity burst for COM
FSM
N.000B
N.002B
7:6
Reserved
RO
5:0 MaxBurstWidth0[5:0] R/W
MaxBurstWidth1[5:0]
-
Reserved
000111 Upper bound count of activity burst for COM
FSM
N.000C
7:6
Reserved
RO
-
Reserved
N.002C
5:0
MinInitWidth0[5:0]
RW
001100 Lower bound count of idle for COMINIT/COM-
5:0
MinInitWidth1[5:0]
RESET
24