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參數(shù)資料
| 型號： | 935271407118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | Buffer和線驅動 |
| 英文描述： | LINE TRANSCEIVER, PBCC16 |
| 封裝： | 3 X 3 X 0.65 MM, PLASTIC, MO-217, SOT-639-2, HBCC-16 |
| 文件頁數(shù)： | 17/21頁 |
| 文件大?。?/td> | 518K |
| 代理商： | 935271407118 |
Philips Semiconductors
ISP1104
Advanced USB transceiver
Product data
Rev. 01 — 26 August 2002
5 of 21
9397 750 09784
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
7.
Functional description
7.1 Function selection
[1]
Signal levels on pins (D
+,D) are determined by other USB devices and external pull-up or pull-down
resistors.
[2]
In the ‘suspend’ mode (pin SUSPND = HIGH), the differential receiver is inactive and the output RCV
is always LOW. Out-of-suspend (‘K’) signalling is detected via the single-ended receivers VP and VM.
7.2 Operating functions
[1]
VP = VM = H indicates the sharing mode (VCC(5.0) is disconnected).
[2]
RCV* denotes the signal level on output RCV just before the SE0 state occurs. This level is stable
during the SE0 period.
Table 3:
Function table
SUSPND
OE
(D
+, D)
RCV
VP/VM
Function
L
driving and
receiving
active
normal driving
(differential receiver active)
L
H
active
receiving
H
L
driving
inactive[2]
active
driving during ‘suspend’
(differential receiver inactive)
H
inactive[2]
active
low-power state
Table 4:
Driving function using single-ended input data interface [(OE=L)
(MODE = L)]
FSE0
VO
Data
L
differential logic 0
L
H
differential logic 1
H
L
SE0
H
SE0
Table 5:
Driving function using differential input data interface [(OE = L)
(MODE = H)]
VMO
VPO
Data
L
SE0
L
H
differential logic 1
H
L
differential logic 0
H
illegal state
Table 6:
Receiving function (OE=H)
(D
+, D)
RCV
VP[1]
VM[1]
differential logic 0
L
H
differential logic 1
H
L
SE0
LL
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