參數(shù)資料
型號： MCS7840CV
廠商： Electronic Theatre Controls, Inc.
英文描述： USB-2.0 to Four Serial Ports
中文描述： 的USB 2.0 4個串行端口
文件頁數(shù)： 4/41頁
文件大小： 447K
代理商： MCS7840CV
MCS7840
USB-2.0 to Four Serial Ports
Page 4
Rev.
1.2
Pin Assignments
Pin
1
2
3
4
5
Name
GND
K
USB_XSCI
USB_XSCO
Vcc
A
GND
A
Type
Power
Input
Output
Power
Power
Functional Description
Core Ground
Crystal Oscillator Input
Crystal Oscillator Output
Power Pin (A3V3)
Analog Ground
External Reference Resistor (12.1 K
Ω
, 1%)
Connect resistor to Analog GND.
USB D- Signal
USB D+ Signal
Power Pin (A3V3)
Analog Ground
Power Pin (1.8V)
6
USB_RREF
Input
7
8
9
USB_DM
USB_DP
Vcc
A
GND
A
Vcc
K
I/O
I/O
Power
Power
Power
10
11
12
TEST_MODE
Input
Test Mode Pin, (active high). Default = Low (0)
When TEST_MODE = 1, PLL, Core, and SCAN/BIST/
Memory BIST testing can be performed.
Set TEST_MODE = 0 for normal operation.
13
TXD_4
Output
Serial Port 4 Transmit Data out to transceiver or IrDA
data out to IR LED
14
DTR_4_N
Output
Serial Port 4 Data Terminal Ready (in serial protocol),
active low.
15
RTS_4_N
Output
Serial Port 4 Request To Send (in serial protocol),
active low.
16
RXD_4
Input
Serial Port 4 Serial Receive Data in from transceiver
or IrDA data in from IrDA detector.
17
RI_4_N
Input
Serial Port 4 Ring Indicator, active low
Serial Port 4 Data Set Ready (in serial protocol), active
low
18
DSR_4_N
Input
19
DCD_4_N
Input
Serial Port 4 Data Carrier Detect (in serial protocol),
active low
20
CTS_4_N
Input
Serial Port 4 Clear To Send (in serial protocol), active
low
21
TXD_1
Output
Serial Port 1 Transmit Data out to transceiver, or IrDA
data out to IR LED
22
DTR_1_N
Output
Serial Port 1 Data Terminal Ready (in serial protocol),
active low.
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