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參數(shù)資料
| 型號(hào)： | ISP1105 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Advanced Universal Serial Bus transceivers |
| 中文描述： | 先進(jìn)的通用串行總線(xiàn)收發(fā)器 |
| 文件頁(yè)數(shù)： | 6/24頁(yè) |
| 文件大?。?/td> | 588K |
| 代理商： | ISP1105 |
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Philips Semiconductors
ISP1105/1106/1107
Advanced USB transceivers
Product data
Rev. 06 — 30 November 2001
6 of 24
9397 750 08872
Koninklijke Philips Electronics N.V. 2001. All rights reserved.
[1]
[2]
Symbol names with an overscore (e.g. NAME) indicate active LOW signals.
Down bonded to the exposed diepad.
7.
Functional description
7.1 Function selection
[1]
[2]
Signal levels on (D
+
, D
)
are determined by other USB devices and external pull-up/down resistors.
In ‘suspend’ mode (SUSPND = HIGH) the differential receiver is inactive and output RCV is always
LOW. Out-of-suspend (‘K’) signalling is detected via the single-ended receivers VP and VM.
During suspend, the slew-rate control circuit of low-speed operation is disabled. The (D
+
, D
)
lines
are still driven to their intended states, without slew-rate control. This is permitted because driving
during suspend is used to signal remote wake-up by driving a ‘K’ signal (one transition from idle to
‘K’ state) for a period of 1 to 15 ms.
[3]
V
reg(3.3)
13
13
15
-
Internal regulator option:
regulated supply voltage output
(3.0 to 3.6 V) during 5 V operation; a decoupling capacitor
of at least 0.1
μ
F is required
Regulator bypass option:
used as a supply voltage input
for 3.3 V operation. (3.3 V
±
10%)
Internal regulator option:
supply voltage input
(4.0 to 5.5 V); can be connected directly to USB supply
V
BUS
Regulator bypass option:
connect to V
reg(3.3)
pull-up supply voltage (3.3 V
±
10%); connect an external
1.5 k
resistor on D
+
(full-speed) or D
(low-speed); pin
function is controlled by input SOFTCON:
V
CC(5.0)
14
14
16
-
V
pu(3.3)
15
15
1
-
SOFTCON = LOW —
V
pu(3.3)
floating (high impedance);
ensures zero pull-up current
SOFTCON = HIGH —
V
pu(3.3)
= 3.3 V; internally connected
to V
reg(3.3)
software controlled USB connection input; a HIGH level
applies 3.3 V to pin V
pu(3.3)
, which is connected to an
external 1.5 k
pull-up resistor; this allows USB
connect/disconnect signalling to be controlled by software
SOFTCON
16
16
2
I
Table 3:
Symbol
[1]
Pin description
…continued
Pin
ISP1105
HBCC16
Type
Description
ISP1106/7
HBCC16
ISP1106/7
TSSOP16
Table 4:
SUSPND
L
Function table
OE
L
(D
+
, D
)
driving &
receiving
receiving
[1]
driving
RCV
active
VP/VM
active
Function
normal driving
(differential receiver active)
receiving
driving during ‘suspend’
[3]
(differential receiver inactive)
low-power state
L
H
H
L
active
inactive
[2]
active
active
H
H
high-Z
[1]
inactive
[2]
active
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