isp1760 NXP Semiconductors, isp1760 Datasheet - Page 91

• Manufacturer Part Number: isp1760
• Description: Hi-speed Universal Serial Bus Host Controller For Embedded Applications
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 13257
Product data sheet
14.2.1 Single cycle: DMA read
14.2 DMA timing
In the following sections:
Table 95:
V
Table 96:
V
Symbol
t
t
t
t
t
t
Symbol
t
t
t
t
t
t
a14
a24
d14
w14
a34
a44
a14
a24
d14
w14
a34
a44
Fig 15. DMA read (single cycle).
CC(I/O)
CC(I/O)
•
•
Polarity of DACK is active HIGH
Polarity of DREQ is active HIGH.
= 1.65 V to 1.95 V; T
= 3.3 V to 3.6 V; T
DMA read (single cycle)
DMA read (single cycle)
Parameter
DACK assertion time after DREQ assertion
RD_N assertion time after DACK assertion
data valid time after RD_N assertion
RD_N pulse width
DREQ deassertion time after RD_N assertion
DREQ deassertion to next DREQ assertion time -
Parameter
DACK assertion time after DREQ assertion
RD_N assertion time after DACK assertion
data valid time after RD_N assertion
RD_N pulse width
DREQ deassertion time after RD_N assertion
DREQ deassertion to next DREQ assertion time -
DREQ
DACK
RD_N
DATA
Rev. 01 — 8 November 2004
amb
t
amb
a14
= 40 C to +85 C; unless otherwise specified.
t
a24
= 40 C to +85 C; unless otherwise specified.
t
d14
t
w14
t
a34
Embedded Hi-Speed USB host controller
t
a44
Min
0
0
-
t
23
Min
0
0
-
t
11
d14
d14
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Max
-
-
24
-
-
56
Max
-
-
20
-
-
56
004aaa530
ISP1760
Unit
ns
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
ns
ns
91 of 105