ISP1181B Datasheet, PDF (57/70 Pages) NXP Semiconductors – Full-speed Universal Serial Bus peripheral controller

Philips Semiconductors
ISP1181B
Full-speed USB peripheral controller
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)
t_RSIH
input RD/WR HIGH after
DREQ on
22
-
22
-
ns
t_ILRP
DREQ off after input RD/WR
LOW
-
60
-
60
ns
t_IHAP
DACK off after input RD/WR
HIGH
0
-
0
-
ns
t_IHIL
DMA burst repeat interval
(input RD/WR HIGH to LOW)
90
-
180
-
ns
Burst EOT (see Figure 30)
t_EOT
EOT pulse width
EOT on;
22
-
22
-
ns
DACK on;
RD/WR LOW
t_ISRP
t_RLIS
t_WLIS
DREQ off after input EOT on
input EOT on after RD LOW
input EOT on after WR LOW
-
40
-
40
ns
-
22
-
89
ns
-
22
-
89
ns
DREQ
t _RSIH
DACK
RD / WR
Fig 29. Burst mode DMA timing.
t _ILRP
t _{I HAP}
t _IHIL
MGS796
9397 750 13958
Product data
Rev. 02 — 07 December 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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