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(yè)數(shù): 53/70頁(yè)
文件大小: 341K
代理商: ISP1181BDGG,112
Philips Semiconductors
ISP1181B
Full-speed USB peripheral controller
Product data
Rev. 02 — 07 December 2004
57 of 70
9397 750 13958
Koninklijke Philips Electronics N.V. 2004. All rights reserved.
21.4 DMA timing: burst mode
Table 60:
Dynamic characteristics: burst mode DMA timing
Symbol
Parameter
Conditions
8-bit bus
16-bit bus
Unit
Min
Max
Min
Max
Burst (see Figure 29)
tRSIH
input RD/WR HIGH after
DREQ on
22
-
22
-
ns
tILRP
DREQ off after input RD/WR
LOW
-
60
-
60
ns
tIHAP
DACK off after input RD/WR
HIGH
0-
ns
tIHIL
DMA burst repeat interval
(input RD/WR HIGH to LOW)
90
-
180
-
ns
Burst EOT (see Figure 30)
tEOT
EOT pulse width
EOT on;
DACK on;
RD/WR LOW
22
-
22
-
ns
tISRP
DREQ off after input EOT on
-
40
-
40
ns
tRLIS
input EOT on after RD LOW
-
22
-
89
ns
tWLIS
input EOT on after WR LOW
-
22
-
89
ns
Fig 29. Burst mode DMA timing.
MGS796
DACK
DREQ
tRSIH
tILRP
tIHIL
tIHAP
RD/WR
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