参数资料
型号: DP83848YB/NOPB
厂商: National Semiconductor
文件页数: 63/86页
文件大小: 0K
描述: IC TXRX ETHERNET PHYTERA 48-LQFP
标准包装: 250
类型: 收发器
驱动器/接收器数: 1/1
规程: 以太网
电源电压: 3 V ~ 3.6 V
安装类型: 表面贴装
封装/外壳: 48-LQFP 裸露焊盘
供应商设备封装: 48-LQFP 裸露焊盘(7x7)
包装: 带卷 (TR)
其它名称: DP83848YBTR
65
www.national.com
DP
83
84
8
Y
B
8.2.2 Reset Timing
Note: It is important to choose pull-up and/or pull-down resistors for each of the hardware configuration pins that provide
fast RC time constants in order to latch-in the proper value prior to the pin transitioning to an output driver.
Parameter
Description
Notes
Min
Typ
Max
Units
T2.2.1
Post RESET Stabilization time
prior to MDC preamble for reg-
ister accesses
MDIO is pulled high for 32-bit serial man-
agement initialization
3
s
T2.2.2
Hardware Configuration Latch-
in Time from the Deassertion
of RESET (either soft or hard)
Hardware Configuration Pins are de-
scribed in the Pin Description section
3
s
T2.2.3
Hardware Configuration pins
transition to output drivers
50
ns
T2.2.4
RESET pulse width
X1 Clock must be stable for at min. of 1us
during RESET pulse low time.
1
s
Vcc
Hardware
RESET_N
MDC
32 clocks
Latch-In of Hardware
Configuration Pins
Dual Function Pins
Become Enabled As Outputs
input
output
X1 clock
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