|
本帖最后由 超級狗 于 2016-7-27 17:04 编辑
5 ]1 o+ l$ b8 n$ F# _: f4 G6 c: R! H: I* K% {& n; H; H# \: a
肥死卡好(Freescale)挨打沒死六(i.MX6)的 Bug 啦!
+ A/ d* h. \ b4 R
, ^& ~" m7 k7 c+ b 6 {; ~% g2 `5 r# e% K
. }- s# [5 \. n% J- Z x7 Q0 {( rDescription:
- k* W# x) ~9 G7 V& VIn some cases, the 24 MHz oscillator start-up is slow or may fail to start.
6 r9 h* |% W* Y2 A$ I3 L
6 h3 b$ N3 }. ?& {! ^. }2 j# ZProjected Impact:, X# g- @8 [$ T; U# m \# K7 ^5 t0 p
A slow start-up will add 1.5 ms to the startup sequence. In some cases, the oscillator may not start at all.
3 h- N$ |# f: T; c) ?
( Q8 V }* N: ^
( V& D8 Y2 l4 R' tWorkarounds:
6 Z' h% b4 a5 R+ W* W% bThe addition of a 2.2 M-ohm external resistor from the XTALI pin to ground is required for all designs.
( \, _: Y# ~+ O( d3 s3 @% O/ N, U' B
+ p+ e+ o/ g/ Y/ Z W0 |
% g3 ]. \3 b& A" r9 tProposed Solution:
0 y$ ^; y, R B( ~9 ONo fix scheduled
* P/ [, {4 a1 L# Q! N& T4 W0 h5 u* }& `
到現在都沒改!( d$ ]. K; r! t$ p: |! `4 L
7 ~, g' W& D3 \. E% K
0 m7 Q4 A- Q' `. B7 g& B6 ]
* P+ R0 W* `2 |1 E" `/ |
|
|