參數(shù)資料
型號: LR38666Y
廠商: Sharp Corporation
元件分類: 數(shù)字信號處理
英文描述: CMOS digital signal processor
中文描述: CMOS數(shù)字信號處理器
文件頁數(shù): 33/38頁
文件大小: 203K
代理商: LR38666Y
LR38666Y
33
USB TIMING
USB transmitting timing
(DV
DD
= 3.3 V, DV
DD2
= 2.5 V, T
A
= 0 to +70C)
PARAMETER
SYMBOL
CONDITIONS
UNIT
NOTE
MIN.
80
162
TYP.
83
167
MAX.
86
172
Transmission period of 1 bit
Output delay period of TX_OE_N
T
WPUT
T
OED
ns
ns
1, 2
2
NOTES :
1. When "High" or "Low" continues for N bits period, it is (48 MHz)
–1
x 4 x N±3 ns.
2. Output load capacity C
L
= 15 pF
3. USB module will be reset when SE
0
status (GIO
13
= GIO
14
= "Low") is input longer than 2.5 μs, in
transmitting, so choose USB transceiver IC carefully.
T
WPUT
T
WPUT
T
OED
T
WPUT
GIO
9
(as TX_VPO)
GIO
10
(as TX_VMO)
GIO
11
(as TX_OE_N)
GIO
12
(as SUSPEND_N)
Fig. 14 USB Transmitting Cycle
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