sc16c852sviet NXP Semiconductors, sc16c852sviet Datasheet - Page 6

• Manufacturer Part Number: sc16c852sviet
• Description: 1.8 V Dual Uart, 20 Mbit/s Max. With 128-byte Fifos, Infrared Irda , And Xscale Vlio Bus Interface
• Manufacturer: NXP Semiconductors

NXP Semiconductors
SC16C852SV_1
Product data sheet
Table 2.
Symbol
RESET
RIA
RIB
RTSA
RTSB
RXA
RXB
TXA
TXB
V
V
XTAL1
XTAL2
DD
SS
Pin description
Pin
B5
A4
F5
C6
E5
D1
C2
D2
E1
C4
D4
D3
F2
Dual UART with 128-byte FIFOs, IrDA, and XScale VLIO bus interface
Type
I
I
O
I
O
I
I
I
O
Rev. 01 — 23 September 2008
…continued
Description
Master reset (active LOW). A reset pulse will reset the internal
registers and all the outputs. The SC16C852SV transmitter outputs
and receiver inputs will be disabled during reset time. (See
7.24 “SC16C852SV external reset condition and software reset”
initialization details.)
Ring Indicator (active LOW). These inputs are associated with
individual UART channels, A through B. A logic 0 on this pin indicates
the modem has received a ringing signal from the telephone line. A
logic 1 transition on this input pin will generate an interrupt.
Request to Send (active LOW). These outputs are associated with
individual UART channels, A through B. A logic 0 on the RTS pin
indicates the transmitter has data ready and waiting to send. Writing
a logic 1 in the modem control register MCR[1] will set this pin to a
logic 0, indicating data is available. After a reset this pin will be set to
a logic 1.
Receive data A, B. These inputs are associated with individual serial
channel data to the SC16C852SV receive input circuits, A through B.
The RX signal will be a logic 1 during reset, idle (no data), or when
not receiving data. During the local Loopback mode, the RX input pin
is disabled and TX data is connected to the UART RX input,
internally.
Transmit data A, B. These outputs are associated with individual
serial transmit channel data from the SC16C852SV. The TX signal
will be a logic 1 during reset, idle (no data), or when the transmitter is
disabled. During the local Loopback mode, the TX output pin is
disabled and TX data is internally connected to the UART RX input.
Power supply input.
Signal and power ground.
Crystal or external clock input. Functions as a crystal input or as
an external clock input. A crystal can be connected between this pin
and XTAL2 to form an internal oscillator circuit. Alternatively, an
external clock can be connected to this pin to provide custom data
rates (see
See
Output of the crystal oscillator or buffered clock. (See also
XTAL1.) Crystal oscillator output or buffered clock output. Should be
left open if an external clock is connected to XTAL1.
Figure
Section 6.9 “Programmable baud rate
5.
SC16C852SV
generator”).
© NXP B.V. 2008. All rights reserved.
Section
6 of 48
for