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参数资料
| 型号： | STLR4200S |
| 厂商： | Electronic Theatre Controls, Inc. |
| 英文描述： | USB/lrDA Bridge Controller |
| 中文描述： | 的USB / lrDA桥控制器 |
| 文件页数： | 6/21页 |
| 文件大小： | 308K |
| 代理商： | STLR4200S |
6
3-4200-D1-2.0-0403
STIr4200
USB/IrDA Bridge Controller
O F F I C I A L P R O D U C T D O C U M E N T A T I O N
3.3.
Electrical Characteristics
T
A
= 25
°
C
A
V
DD
= 3.3V unless otherwise specified. Cap Load = 50pF
4. FUNCTIONAL DESCRIPTION
4.1.
Overview
The STIr4200 consists of two major functional blocks, the USB controller and the
digital IR transceiver. The USB controller provides a Control, Bulk-In, and Bulk- Out
endpoints to the USB host. The digital IR transceiver consists of a transmit and
receive interface that connects to an analog IR front end. Figure 1shows a block dia-
gram of the device.
This USB/IrDA Bridge Controller has full interface capability to connect between a
USB bus , and an IrDA-compatible infrared transceiver device. A simplified sche-
matic of this arrangement is shown in Figure 2.
Symbol
Parameter
MIN
TYP
MAX
UNITS
CONDITION
I
CC
I
CC
Active Supply Current
12
19
mA
Suspend Supply Current
14
50
μ
A
V
RXDH
V
RXDL
V
TXDH
V
TXDL
Receive Data Logic High
V
DD
x 0.8
V
Receive Data Logic Low
0.8
V
Transmit Data Logic High
V
DD
x 0.6
V
Transmit Data Logic Low
V
DD
x 0.4
V
Table 3. Electrical Characteristics
STIr4200S
USB-IrDA
Bridge
Controller
USB
U
I
Vcc
GND
SD
RXD
TXD
V+
GND
D+
D-
Voltage
Regulator
Figure 2. Typical USB-IR Application
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