数据
n20: MSB N19 N10 N9 C2 c1: LSB
(r20: msb) (r19) R10 (r9) (c2) (c1: lsb)(r8)
时钟
LE
LE
或者
t
CS
t
CH
t
CWH
t
ES
t
EW
t
CWL