MCS7703 MosChip, MCS7703 Datasheet - Page 4

• Manufacturer Part Number: MCS7703
• Description: Usb 1.1 To Single Serial Port
• Manufacturer: MosChip

Page 4
MCS7703
USB 1.1 to Single Serial Port
Pin Name
nSHDN
EESDA
EECLK
RESET
GPIO1
GPIO2
AGND
RSTO
VOUT
nDTR
nDSR
nRTS
nCTS
nCD
nRI
DM
RX
TX
DP
5V
Pin
10
11
12
13
14
15
16
17
19
20
22
23
25
1
2
3
4
5
6
9
Type
PWR
PWR
PWR
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
I
I
I
I
I
I
Serial Data Output.
Data-Terminal-Ready signal. It is set high (inactive) after a
hardware reset or during internal loop-back mode. When low, this
output indicates to the modem or data set that the UART is ready
to establish a communication link. nDTR has no effect on the
transmitter or receiver.
Request-To-Send signal. It is set high (inactive) after a hardware
reset or during internal loop-back mode. When low, this indicates
the PC is ready to exchange data.
Power-On Reset output. Output of the internal Power-On Reset is
routed to this pin.
Serial Data Input.
Ring-detect signal.
Data-Set-Ready signal.
Carrier-Detect signal. When low this indicates that the modem or
data set has detected the data carrier. nCD has no effect on the
transmitter.
Clear-To-Send signal. When low this indicates that the modem
or data set is ready to exchange data. nCTS has no effect on the
transmitter.
Shut Down External RS-232 transceiver. Active Low, when DCR2
Bit-7 = 0, Active High, when DCR2 Bit-7 = 1. Default is active low.
2-Wire EEPROM Clock.
2-Wire EEPROM Data IN/OUT. Tri-State.
Upstream USB port differential Data Plus (D+), analog.
Upstream USB port differential Data Minus (D-), analog.
+3.3V Voltage Regulator Output.
System Reset. Resets all internal registers, sequencers, and
signals to a consistent state. Active High.
Main power input. Connect to USB VBUS or local VDD.
If DCR0 Bit-1 = 0, then GPIO is Tri-State after Reset. When DCR0
Bit-1 = 1, Bi-directional GPIO pin.
If DCR0 Bit-1 = 0, at Reset the state of this pin is used to decide
the load condition. Low is 100mA, High is 500mA. When DCR0
Bit-1 = 1, Bi-directional GPIO pin.
PLL Analog Ground.
Description
Rev. 1.6