ISP1581 Просмотр технического описания (PDF) - Philips Electronics
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ISP1581 Datasheet PDF : 80 Pages
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Philips Semiconductors
ISP1581
USB 2.0 HS interface device
6.2 Pin description
Table 2: Pin description for LQFP64
Symbol[1]
Pin Type[2] Description
DGND
1
-
digital ground
VCC(5.0)[3]
2
-
supply voltage (3.3 or 5.0 V).
for 5.0 V operation, this is the only pin used. Refer to
Section 10
AGND
3
-
analog ground
VCCA(3.3)[3]
4
-
regulated supply voltage (3.3 V ± 0.3 V) from internal
regulator; supplies internal analog circuits; used to connect
decoupling capacitor and 1.5 kΩ pull-up resistor on D+ line
Remark: Cannot be used to supply external devices. Refer
to Section 10
D−
5
A
USB D− connection (analog)
D+
6
A
USB D+ connection (analog)
RPU
7
A
connection for external pull-up resistor for USB D+ line;
must be connected to VCCA(3.3) via a 1.5 kΩ resistor
RREF
8
A
connection for external bias resistor; must be connected to
ground via a 12.0 kΩ (± 1%) resistor
MODE1
9
I
selects function of pin ALE/A0 (in Split Bus mode only):
RESET
EOT
DREQ
DACK
10 I
11 I
12 I/O
13 I/O
0 — ALE function (address latch enable)
1 — A0 function (address/data indicator).
input pad; TTL; 5 V tolerant.
Remark: Connect to VCC(5.0) in Generic Processor mode.
reset input; TTL with Hysteresis; 5 V tolerant; a LOW level
produces an asynchronous reset; connect to VCC for
power-on reset (internal POR circuit)
End Of Transfer input (programmable polarity, see
Table 37); used in DMA slave mode only
input pad;
TTL; 5 V tolerant; 5 ns slew rate control.
DMA request (programmable polarity); direction depends
on the bit MASTER in the DMA Hardware register (DMA
master: input, DMA slave: output); see Table 35 and
Table 36
bidirectional pad; push pull output; 5 ns slew rate control;
TTL; 5 V tolerant.
DMA acknowledge (programmable polarity); direction
depends on bit MASTER in the DMA Hardware register
(DMA slave: input, DMA master: output); see Table 35 and
Table 36
bidirectional pad; push pull output; 5 ns slew rate control;
TTL; 5 V tolerant.
9397 750 09665
Product data
Rev. 04 — 18 July 2002
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
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