ISP1583 Просмотр технического описания (PDF) - Philips Electronics
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ISP1583 Datasheet PDF : 87 Pages
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Philips Semiconductors
ISP1583
Hi-Speed USB peripheral controller
Table 2: Pin description…continued
Symbol[1] Pin Type[2] Description
RESET_N 7 I
reset input (500 µs); a LOW level produces an asynchronous
reset; connect to VCC(3V3) for power-on reset (internal POR
circuit)
TTL; 5 V tolerant[6]
EOT
8I
end-of-transfer input (programmable polarity); used in DMA
slave mode only; when not in use, connect this pin to VCC(I/O)
through a 10 kΩ resistor
input pad; TTL; 5 V tolerant[6]
DREQ
9 I/O
DMA request input or output (programmable polarity); the
signal direction depends on bit MASTER in register DMA
Hardware (see Table 57):
• Input: DMA master if bit MASTER = 1
• Output: DMA slave if bit MASTER = 0.
When not in use, in the default setting, this pin must be
connected to ground through a 10 kΩ resistor.
bidirectional pad; 4 ns slew-rate control; TTL; 5 V tolerant[6]
DACK
10 I/O
DMA acknowledge input or output (programmable polarity); the
signal direction depends on bit MASTER in register DMA
Hardware (see Table 57):
• Input: DMA slave if bit MASTER = 0
• Output: DMA master if bit MASTER = 1.
When not in use, in the default setting, this pin must be
connected to VCC(I/O) through a 10 kΩ resistor.
bidirectional pad; 4 ns slew-rate control; TTL; 5 V tolerant[6]
DIOR
11 I/O
DMA read strobe input or output (programmable polarity); the
signal direction depends on bit MASTER in register DMA
Hardware (see Table 57):
• Input: DMA slave if bit MASTER = 0
• Output: DMA master if bit MASTER = 1.
When not in use, in the default setting, this pin must be
connected to VCC(I/O) through a 10 kΩ resistor.
bidirectional pad; 4 ns slew-rate control; TTL; 5 V tolerant[6]
DIOW
12 I/O
DMA write strobe input or output (programmable polarity); the
signal direction depends on bit MASTER in register DMA
Hardware (see Table 57):
• Input: DMA slave if bit MASTER = 0
• Output: DMA master if bit MASTER = 1.
When not in use, in the default setting, this pin must be
connected to VCC(I/O) through a 10 kΩ resistor.
bidirectional pad; 4 ns slew-rate control; TTL; 5 V tolerant[6]
DGND
13 -
digital ground
INTRQ
14 I
interrupt request input; from the ATA/ATAPI peripheral; use a
10 kΩ resistor to pull-down
input pad; TTL; 5 V tolerant[6]
9397 750 13461
Product data
Rev. 03 — 12 July 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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