LPC1776FBD208 NXP Semiconductors, LPC1776FBD208 Datasheet - Page 93

• Manufacturer Part Number: LPC1776FBD208
• Description: The LPC1776 is a Cortex-M3 microcontroller for embedded applications featuring a high level of integration and low power consumption at frequencies of 120 MHz
• Manufacturer: NXP Semiconductors

NXP Semiconductors
LPC178X_7X
Objective data sheet
Fig 26. Differential data-to-EOP transition skew and EOP width
T
differential
data lines
PERIOD
11.10 Ethernet
Remark: The Ethernet block is available on parts LPC1788/86 and LPC1778/76.
Table 28.
T
[1]
[2]
Symbol Parameter
d
t
t
MII mode
f
d
t
t
f
d
t
t
RMII mode
f
clk
su
h
clk
su
h
clk
su
h
amb
clk
clk
clk
Output drivers can drive a load  25 pF accommodating over 12 inch of PCB trace and the input
capacitance of the receiving device.
Timing values are given from the point at which the clock signal waveform crosses 1.4 V to the valid input or
output level.
=

40
n × T
differential data to
clock frequency
clock duty cycle
set-up time
hold time
clock frequency
clock duty cycle
set-up time
hold time
clock frequency
clock duty cycle
set-up time
hold time
crossover point
SE0/EOP skew

Dynamic characteristics: Ethernet
C to 85
PERIOD
All information provided in this document is subject to legal disclaimers.
+ t

FDEOP
C, V
Rev. 3 — 27 December 2011
DD(REG)(3V3)
Conditions
for ENET_RX_CLK
for ENET_TXDn, ENET_TX_EN,
ENET_RXDn, ENET_RX_ER,
ENET_RX_DV
for ENET_TXDn, ENET_TX_EN,
ENET_RXDn, ENET_RX_ER,
ENET_RX_DV
for ENET_TX_CLK
for ENET_TXDn, ENET_TX_EN,
ENET_TX_ER
for ENET_TXDn, ENET_TX_EN,
ENET_TX_ER
for ENET_RX_CLK
for ENET_RXDn, ENET_RX_ER,
ENET_RX_DV
for ENET_RXDn, ENET_RX_ER,
ENET_RX_DV
= 3.0 V to 3.6 V. Values guaranteed by design.
crossover point
extended
32-bit ARM Cortex-M3 microcontroller
source EOP width: t
receiver EOP width: t
[1]
[1]
[1][2]
[1][2]
[1]
[1]
[1][2]
[1][2]
[1]
[1]
[1][2]
[1][2]
LPC178x/7x
Min
-
50
4
2
-
50
4
2
-
50
4
2
© NXP B.V. 2011. All rights reserved.
FEOPT
002aab561
EOPR1
Max
50
50
-
-
25
50
-
-
25
50
-
-
, t
EOPR2
93 of 120
Unit
MHz
%
ns
ns
MHz
%
ns
ns
MHz
%
ns
ns