mcs7781 MosChip, mcs7781 Datasheet - Page 4

• Manufacturer Part Number: mcs7781
• Description: Usb To Irda Port
• Manufacturer: MosChip

Page 4
MCS7781
USB to IrDA Port
Pin Assignments
TXDIODEG
TXDIODE
RXSLOW
CFUNC0
CFUNC1
RXFAST
nRESET
MODE0
MODE1
STCFIR
EECLK
EEDIO
XTAL1
XTAL2
DGND
AGND
Name
VOUT
5VA
VIN
DM
DP
TX
5V
2, 9, 11
10, 15
Pin
12
13
18
19
20
21
22
24
25
26
27
28
17
23
1
3
4
5
6
7
8
PWR
PWR
PWR
PWR
PWR
PWR
PWR
Type
I/O
I/O
I/O
I/O
O
O
O
O
O
O
I
I
I
I
I
I
Internal mode control (Internal pull-up). Should be left open
Internal mode control (Internal pull-up). Should be left open
All 3.3V supply pins need to be connected to this pin
External EEPROM Data IN / OUT (I
Connect to USB VBUS or local 5V Supply
USB transceiver power supply ground
External EEPROM Clock (I
Receive data from IR module (Slow)
Optional Transmit LED driver output
Receive data from IR module (Fast)
Transmit Data output to IR module
Optional LED driver output GND
3.3V, Voltage Regulator Output.
USB transceiver power supply
USB transceiver power supply
USB interface Negative Data
Digital Power supply ground
USB interface Positive Data
12 MHz crystal/clock output
Mode control to IR module
Mode control to IR module
12 MHz crystal/clock input
Master Reset, active low
Main Power Input (5V).
Static FIR select
Description
2
C format)
2
C format)
Rev.
2.1