isp1181 NXP Semiconductors, isp1181 Datasheet - Page 57

• Manufacturer Part Number: isp1181
• Description: Isp1181 Full-speed Universal Serial Bus Interface Device
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Table 60:
9397 750 08938
Product data
Symbol
8237 compatible mode (see
t
T
Read in DACK-only mode (see
t
t
t
t
t
Write in DACK-only mode (see
t
t
t
t
Single-cycle EOT (see
t
t
t
t
t
ASRP
ASRP
ASAP
ASAP
ASDV
APDZ
ASRP
ASAP
DVAP
APDZ
RSIH
IHAP
EOT
RLIS
WLIS
Fig 26. DMA timing in 8237 compatible mode.
cy(DREQ)
+ t
+ t
APRS
APRS
DREQ
DACK
Dynamic characteristics: single-cycle DMA timing
Parameter
DREQ off after DACK on
cycle time signal DREQ
DREQ off after DACK on
DACK pulse width
DREQ on after DACK off
data valid after DACK on
data hold after DACK off
DREQ off after DACK on
DREQ on after DACK off
data setup before DACK off
data hold after DACK off
input RD/WR HIGH after
DREQ on
DACK off after input RD/WR
HIGH
EOT pulse width
input EOT on after RD LOW
input EOT on after WR LOW
19.4 DMA timing: single-cycle mode
Figure
Figure
29)
Figure
Figure
26)
27)
28)
Conditions
EOT on;
DACK on;
RD/WR LOW
Rev. 04 — 30 October 2001
t ASRP
T cy(DREQ)
Min
-
90
-
25
90
-
-
-
90
5
3
22
0
22
-
-
8-bit bus
Max
40
-
40
-
-
22
3
40
-
-
-
-
-
-
22
22
© Koninklijke Philips Electronics N.V. 2001. All rights reserved.
Min
-
180
-
25
180
-
-
-
180
5
3
22
0
22
-
-
Full-speed USB interface
16-bit bus
Max
40
-
40
-
-
22
3
40
-
-
-
-
-
-
89
89
ISP1181
MGS792
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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