参数资料
型号: WJLXT971ALC.A4-857344
厂商: CORTINA SYSTEMS INC
元件分类: 网络接口
英文描述: DATACOM, ETHERNET TRANSCEIVER, PQFP64
封装: 10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64
文件页数: 58/80页
文件大小: 931K
代理商: WJLXT971ALC.A4-857344
Page 61
Cortina Systems LXT972A Single-Port 10/100 Mbps PHY Transceiver
LXT972A PHY
Datasheet
249186, Revision 5.2
13 September 2007
7.2 AC Timing Diagrams and
Parameters
Figure 31
Power-Up Timing
Table 36
Power-Up Timing
Parameter
Symbol
Min
Typ1
Max
Units
Test Conditions
Voltage threshold
v1
2.9
V
Power Up delay2
t1
300
μs–
1. Typical values are at 25° C and are for design aid only, not guaranteed, and not subject to production
testing.
2. Power-up delay is specified as a maximum value because it refers to the PHY guaranteed performance.
The PHY comes out of reset after a delay of no more than 300
μs. System designers should consider this
value as a minimum value. After threshold v1 is reached, the MAC should delay no less than 300
μs before
accessing the MDIO port.
Figure 32
RESET_L Pulse Width and Recovery Timing
t1
VCC
MDIO, and
so on
v1
B3494-01
t2
RESET_L
MDIO, and
so on
t1
B3495-01
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WJLXT971ALE.A4-857343 DATACOM, ETHERNET TRANSCEIVER, PQFP64
WJLXT971ALE.A4-857346 DATACOM, ETHERNET TRANSCEIVER, PQFP64
WJLXT972ALC.A4-857341 DATACOM, ETHERNET TRANSCEIVER, PQFP64
WJLXT972ALC.A4-857345 DATACOM, ETHERNET TRANSCEIVER, PQFP64
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