參數(shù)資料
型號(hào): ISP1160
廠商: NXP Semiconductors N.V.
英文描述: Embedded Universal Serial Bus Host Controller
中文描述: 嵌入式通用串行總線主控制器
文件頁(yè)數(shù): 76/88頁(yè)
文件大?。?/td> 2044K
代理商: ISP1160
Philips Semiconductors
ISP1160
Embedded USB Host Controller
Product data
Rev. 04 — 04 July 2003
76 of 88
9397 750 11371
Koninklijke Philips Electronics N.V. 2003. All rights reserved.
17.2 DMA timing
17.2.1
Single-cycle DMA timing
[1]
T
DC
= t
RHAL
+
t
DS
+
t
ALRL
Fig 35. Programmed interface timing.
004aaa367
A0
D[15:0]
D[15:0]
WR_N
RD_N
CS_N
data
valid
data
valid
data
valid
data
valid
data
valid
data
valid
data
valid
data
valid
data
valid
tSHSL
tRLRH
tRHRL
tRLDV
tWL
tWHWL
tWDH
tWDSU
TRC
TWC
tRHDZ
tSLRL
tRHSH
tSLWL
tWHSH
tAH
tAS
Table 74:
Symbol
Read/write timing
t
RLRH
t
RLDV
t
RHDZ
t
WSU
t
WHD
t
AHRH
t
ALRL
T
DC
t
SHAH
Dynamic characteristics: single-cycle DMA timing
Parameter
Conditions
Min
Typ
Max
Unit
RD_N pulse width
read process data set-up time
read process data hold time
write process data set-up time
write process data hold time
DACK_N HIGH to DREQ HIGH
DACK_N LOW to DREQ LOW
DREQ cycle
RD_N/WR_N HIGH to
DACK_N HIGH
DREQ HIGH to DACK_N LOW
DREQ pulse spacing
33
26
0
5
0
72
-
-
-
-
-
-
-
-
-
-
-
-
20
-
-
-
21
-
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
[1]
-
0
t
RHAL
t
DS
0
146
-
-
-
-
ns
ns
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