IEEE PMA/PMD REGISTERS (1.0 TO 1.15/1.000F’H) Note (1): After this RESET bit is written, the BBT3821 will not begin counting PREAMBLE bits imme" />
參數(shù)資料
型號: BBT3821-JH
廠商: Intersil
文件頁數(shù): 14/75頁
文件大?。?/td> 0K
描述: IC RE-TIMER OCTAL 192-BGA
標(biāo)準(zhǔn)包裝: 90
類型: 時鐘和數(shù)據(jù)恢復(fù)(CDR),多路復(fù)用器
PLL:
輸入: CML
輸出: CML,CMOS
電路數(shù): 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(yīng)商設(shè)備封裝: 192-EBGA-B(17x17)
包裝: 托盤
21
IEEE PMA/PMD REGISTERS (1.0 TO 1.15/1.000F’H)
Note (1): After this RESET bit is written, the BBT3821 will not begin counting PREAMBLE bits immediately. See Figure 17 for details.
Note (1): This bit is latched low on a detected Fault condition. It is set high on being read.
Table 5. IEEE PMA/PMD CONTROL 1 REGISTER
MDIO REGISTER ADDRESS = 1.0 (1.0000’h)
BIT(S)
NAME
SETTING
DEFAULT
R/W
DESCRIPTION
1.0.15
3.0.15
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. (1)
1.0.14
Reserved
0’b
1.0.13
Speed Select
1 = 10Gbps
1’b
RO
1 = bits 5:2 select speed
1.0.12
Reserved
0’b
1.0.11
LOPOWER
0 = Normal Power
0’b
R/W
No Low Power Mode, writes ignored
1.0.10:7
Reserved
0’h
1.0.6
Speed Select
1 = 10Gbps
1’b
RO
1 = bits 5:2 select speed
1.0.5:2
Speed Select
0000 = 10Gbps
0’h
RO
Operates at 10Gbps
1.0.1
Reserved
0’b
1.0.0
PMA Loopback
1 = Enable loopback
0 = Normal operation
0’b
R/W
Enable serial loop back mode on all four lanes,
XAUI in to XAUI out.
Table 6. IEEE PMA/PMD STATUS 1 REGISTER
MDIO REGISTER ADDRESS = 1.1 (1.0001’h)
BIT
NAME
SETTING
DEFAULT
R/W
DESCRIPTION
1.1.15:8
Reserved
00’h
1.1.7
Local Fault
1 = PMA Local Fault
0’b
RO
Derived from Register 1.8.11:10
1.1.6:3
Reserved
0’h
1.1.2
Rx Link Up
1 = PMA Rx Link Up
0 = PMA/D Rx Link Down
1’b (1)
RO LL(1)
‘Up’ means CX4/LX4 signal level is OK, and the
PLL locked
1.1.1
LoPwrAble
Low Power Ability
0’b
RO
Device does not support a low power mode
1.1.0
Reserved
0’b
Table 7. IEEE PMA/PMD, PCS, PHY XS, SPEED ABILITY REGISTER
MDIO REGISTER ADDRESSES = 1.4, 3.4 & 4.4 ([1,3,4].0004’h)
BIT
NAME
SETTING
DEFAULT
R/W
DESCRIPTION
1.4.15:3
3.4.15:2
4.4.15:1
Reserved for future
speeds
000’h
1.4.2:1
3.4.1
10PASS-T2/
2BASE-TL
EFM Ability
00’b
RO
Device cannot operate @ 2BASE-TL or 10PASS-
T2
1.4.0
3.4.0
4.4.0
10GbpsAble
10Gbps Ablility
1’b
RO
Device Able to operate @ 10Gbps
BBT3821
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