IEEE PCS REGISTERS (3.0 TO 3.25/3.0019’H) Note (1): This bit is not permitted to be a PCS loopback bit by IEEE 802.3ae-2002 subclause 45.2.3.1." />
參數資料
型號： BBT3821-JH
廠商： Intersil
文件頁數： 33/75頁
文件大?。?/td> 0K
描述： IC RE-TIMER OCTAL 192-BGA
標準包裝： 90
類型： 時鐘和數據恢復（CDR），多路復用器
PLL： 無
輸入： CML
輸出： CML，CMOS
電路數： 1
比率 - 輸入:輸出： 8:8
差分 - 輸入:輸出： 是/是
頻率 - 最大： 3.1875Gbps
電源電壓： 1.425 V ~ 2.5 V
工作溫度： 0°C ~ 70°C
安裝類型： 表面貼裝
封裝/外殼： 192-EBGA
供應商設備封裝： 192-EBGA-B（17x17）
包裝： 托盤
39
IEEE PCS REGISTERS (3.0 TO 3.25/3.0019’H)
Note (1): This bit is not permitted to be a PCS loopback bit by IEEE 802.3ae-2002 subclause 45.2.3.1.2 in 10GBASE-X PCS devices. Intersil has submitted a
maintenance request (#1113) to allow that use of this bit. Many XENPAK hosts, however, expect this loopback (which is mandatory for 10GBASE-R PCS
devices). Setting the 3.C001’h.7 bit, (Table 64) will activate this loopback enable bit, but cause the BBT3821 to be non-conforming to the current 802.3
Note (1): This bit is latched low on a detected Fault condition. It is set high on being read.
Note (1): Although the 802.3ae specification describes this register as type R/W, this register cannot have any value other than that reflecting the 10GBASE-X PCS.
Thus writing any other value is ignored, and the register is in effect type RO.
Table 57. IEEE PCS CONTROL 1 REGISTER
MDIO REGISTER ADDRESS = 3.0 (3.0000’h)
BIT(S)
NAME
SETTING
DEFAULT
R/W
DESCRIPTION
3.0.15
1.0.15
4.0.15
Reset
1 = reset
0 = reset done, normal
operation
0’b
R/W SC Writing 1 to this bit will reset the whole chip,
including the MDIO registers.
3.0.14(1)
PCS_LB_EN
Optionally, enable PCS
Loopback, otherwise
reserved
0’b
R/W
If enabled by EN_PCS_LB (see bit 3.C001’h.7,
Table 64) perform PCS Loopback, and is a R/W bit;
otherwise, effectively a reserved RO 0’b bit (1).
3.0.13
Speed Select
1 = 10Gbps
1’b
RO
1 = bits 5:2 select speed
3.0.12
Reserved
00’h
3.0.11
LOPOWER
0 = Normal Power
0’b
R/W
No Low Power Mode, writes ignored
3.0.10:7
Reserved
3.0.6
Speed Select
1 = 10Gbps
1’b
RO
1 = bits 5:2 select speed
3.0.5:2
Speed Select
0000 = 10Gbps
0’h
RO
Operates at 10Gbps
3.0.1:0
Reserved
0’b
Table 58. IEEE PCS STATUS 1 REGISTER
MDIO REGISTER ADDRESS = 3.1 (3.0001’h)
BIT
NAME
SETTING
DEFAULT
R/W
DESCRIPTION
3.1.15:8
Reserved
00’h
3.1.7
Local Fault
1 = PCS Local Fault
0
RO
Derived from Register 3.0008’h
3.1.6:3
Reserved
0’h
3.1.2
Rx Link Up
1 = PCS Rx Link Up
0 = PCS Rx Link Down
1 (1)
RO LL(1)
‘Up’ means CX4/LX4 signal level is OK, Byte
Synch and Lane-Lane Alignment have all
occurred
3.1.1
LoPwrAble
Low Power Ability
0
RO
Device does not support a low power mode
3.1.0
Reserved
0
Table 59. IEEE PCS TYPE SELECT REGISTER
MDIO REGISTER ADDRESS = 3.7 (3.0007’h)
BIT
NAME
SETTING
DEFAULT
R/W
DESCRIPTION
3.7.15:2
Reserved
000’h
3.7.1:0
PCS Type
01 = 10GBASE-X
01b
RO(1)
Writes ignored
BBT3821
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