參數(shù)資料
型號(hào): ISP1181BDGG,112
廠商: NXP SEMICONDUCTORS
元件分類: 總線控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PDSO48
封裝: 6.10 MM, PLASTIC, MO-153, SOT-362-1, TSSOP-48
文件頁數(shù): 47/70頁
文件大?。?/td> 341K
代理商: ISP1181BDGG,112
Philips Semiconductors
ISP1181B
Full-speed USB peripheral controller
Product data
Rev. 02 — 07 December 2004
51 of 70
9397 750 13958
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
21. Timing
21.1 Parallel I/O timing
[1]
Commands Acknowledge Setup, Clear Buffer, Validate Buffer and Write Endpoint Conguration require 180 ns to complete.
Table 57:
Dynamic characteristics: parallel interface timing
Symbol
Parameter
Conditions
8-bit bus
16-bit bus
Unit
Min
Max
Min
Max
Read timing (see Figure 18)
tRHAX
address hold time after RD HIGH
0
-
0
-
ns
tAVRL
address setup time before RD
LOW
0-
ns
tSHDZ
data outputs high-impedance time
after CS HIGH
-3
ns
tRHSH
chip deselect time after RD HIGH
0
-
0
-
ns
tRLRH
RD pulse width
25
-
25
-
ns
tRLDV
data valid time after RD LOW
-
22
-
22
ns
tSHRL
CS HIGH until next ISP1181B RD
60
-
120
-
ns
tSHRL +tRLRH
read cycle time
90
-
180
-
ns
Write timing (see Figure 19)
tWHAX
address hold time after WR HIGH
1
-
1
-
ns
tAVWL
address setup time before WR
LOW
0-
ns
tSHWL
CS HIGH until next ISP1181B WR
60
-
120
-
ns
tSHWL +tWLWH write cycle time
90/180[1] -
180
-
ns
tWLWH
WR pulse width
22
-
22
-
ns
tWHSH
chip deselect time after WR HIGH
0
-
0
-
ns
tDVWH
data setup time before WR HIGH
5
-
5
-
ns
tWHDZ
data hold time after WR HIGH
3
-
3
-
ns
ALE timing (see Figure 20)
tLH
ALE pulse width
20
-
20
-
ns
tAVLL
address setup time before ALE
LOW
10
-
10
-
ns
tLLAX
address hold time after ALE LOW
reading
0
10
0
10
ns
writing
0
-
0
-
ns
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