mcs7710 MosChip, mcs7710 Datasheet - Page 4

• Manufacturer Part Number: mcs7710
• Description: Usb-1.1 To Single Serial Port
• Manufacturer: MosChip

Page 4
MCS7710
USB-1.1 to Single Serial Port
Pin Assignments
TSTMODE
TSTPLL
RESET
XTAL1
XTAL2
VOUT
Name
nDSR
nDTR
nRTS
nCTS
GND
nCD
3.3V
DM
nRI
RX
DP
TX
5V
5, 8, 13, 14,
17, 21, 30,
2, 11, 16,
39, 47
31, 43
Pin
10
12
26
27
29
32
33
35
37
40
48
3
4
6
7
9
1
PWR
PWR
PWR
PWR
Type
I/O
I/O
O
O
O
O
I
I
I
I
I
I
I
I
I
Note: All names with “n” prefix are active low.
Crystal oscillator input or external clock input (6 MHz).
This signal input is used in conjunction with XTAL2 to form a feedback circuit
for the internal timing. Two external (10 pF) capacitors connected from each
side of the crystal to GND are required to form a crystal oscillator
Crystal oscillator output. See XTAL1 description.
Test Mode (active low, internal pull-up) input.
When this pin is tied to GND, the internal PLL is bypassed and an external 48
MHz clock is used as the reference clock.
Internal Test Mode (internal pull-up).
When this pin is tied to GND, the internal test mode is enabled.
Upstream USB port Differential data Minus (D-), analog.
Upstream USB port Differential data Plus (D+), analog.
System Reset (Active high).
Resets all internal registers, sequencers, and signals to a consistent state.
Connect to GND to enable the internal Power-On Reset circuit.
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.
Data-Set-Ready signal.
When low, this indicates the modem or data set is ready to establish a
communication link.
Serial Data Input.
Request-To-Send signal.
It is set high (inactive) after a hardware reset or during internal loop-back mode.
When low, this indicates that the UART is ready to exchange data. nRTS has
no effect on the transmitter or receiver.
Serial Data Output.
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.
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.
Ring-Detect signal.
+3.3V Voltage Regulator Output.
Power and signal grounds.
Device Supply inputs.
All should be connected to the VOUT pin.
The VOUT voltage is gated by RESET.
Main Power Input. Connect to USB VBUS or local VDD.
Description
Rev.
1.1