KS8721B/BT Micrel, Inc. TXC t SU2 TXEN tHD2 TXD[3:0], TXER t S" />
參數(shù)資料
型號: KSZ8721BI TR
廠商: Micrel Inc
文件頁數(shù): 18/32頁
文件大?。?/td> 0K
描述: TXRX PHY 10/100 2.3.3/5V 48-SSOP
標(biāo)準(zhǔn)包裝: 1,000
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 1/1
規(guī)程: MII,RMII
電源電壓: 2.375 V ~ 2.625 V
安裝類型: 表面貼裝
封裝/外殼: 48-BSSOP(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 48-SSOP
包裝: 帶卷 (TR)
配用: 576-1627-ND - BOARD EVALUATION FOR KSZ8721BMC
576-1626-ND - BOARD EVALUATION FOR KSZ8721BL
其它名稱: KSZ8721BITR
KSZ8721BITR-ND
March 2006
25
M9999-030106
KS8721B/BT
Micrel, Inc.
TXC
t
SU2
TXEN
tHD2
TXD[3:0],
TXER
t
SU1
CRS
t
CRS2
t
CRS1
TX+/TX-
tLAT
Symbol
Out
Data
In
t
HD1
Figure 5. 100BaseT MII Transmit Timing
Symbol
Parameter
Min
Typ
Max
Units
tSU1
TXD[3:0] Set-Up to TXC High
10
ns
tSU2
TXEN Set-Up to TXC High
10
ns
tHD1
TXD[3:0] Hold After TXC High
0
ns
tHD2
TXERHold After TXC High
0
ns
tHD3
TXENHold After TXC High
0
ns
tCRS1
TXEN High to CRS Asserted Latency
4
BT
tCRS2
TXEN Low to CRS De-Asserted Latency
4
BT
tLAT
TXEN High to TX+/TX– Output (TX Latency)
9
BT
Table 3. 100BaseT MII Transmit Timing Parameters
Symbol
Parameter
TXD[3:0] Set-Up to TXC High
10
ns
TXEN Set-Up to TXC High
10
ns
TXD[3:0] Hold After TXC High
0
ns
TXERHold After TXC High
0
ns
TXENHold After TXC High
0
ns
TXEN High to CRS Asserted Latency
4
BT
TXEN Low to CRS De-Asserted Latency
4
BT
TXEN High to TX+/TX– Output (TX Latency)
9
BT
TXD[3:0] Set-Up to TXC High
10
ns
TXEN Set-Up to TXC High
10
ns
TXD[3:0] Hold After TXC High
0
ns
TXERHold After TXC High
0
ns
TXENHold After TXC High
0
ns
TXEN High to CRS Asserted Latency
4
BT
TXEN Low to CRS De-Asserted Latency
4
BT
TXEN High to TX+/TX– Output (TX Latency)
9
BT
Min
Typ
Max
Units
TXD[3:0] Set-Up to TXC High
10
ns
TXEN Set-Up to TXC High
10
ns
TXD[3:0] Hold After TXC High
0
ns
TXERHold After TXC High
0
ns
TXENHold After TXC High
0
ns
TXEN High to CRS Asserted Latency
4
BT
TXEN Low to CRS De-Asserted Latency
4
BT
TXEN High to TX+/TX– Output (TX Latency)
9
BT
Min
Typ
Max
Units
TXD[3:0] Set-Up to TXC High
10
ns
TXEN Set-Up to TXC High
10
ns
TXD[3:0] Hold After TXC High
0
ns
TXERHold After TXC High
0
ns
TXENHold After TXC High
0
ns
TXEN High to CRS Asserted Latency
4
BT
TXEN Low to CRS De-Asserted Latency
4
BT
TXEN High to TX+/TX– Output (TX Latency)
9
BT
Min
Typ
Max
Units
TXD[3:0] Set-Up to TXC High
10
ns
TXEN Set-Up to TXC High
10
ns
TXD[3:0] Hold After TXC High
0
ns
TXERHold After TXC High
0
ns
TXENHold After TXC High
0
ns
TXEN High to CRS Asserted Latency
4
BT
TXEN Low to CRS De-Asserted Latency
4
BT
TXEN High to TX+/TX– Output (TX Latency)
9
BT
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