XR16M2752,XR16M2752IJ44,XR16M2752IL32

Part No.:
XR16M2752,XR16M2752IJ44,XR16M2752IL32
Download:
Download
Description:
HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
File Size:
1108 K
Page:
52 Pages
Logo:
Maker:
EXAR [ EXAR CORPORATION ]
PCB Prototype

July 19, 2018:

Y-ConUSB-Stick-3

ZMSMH0130P00PMC

ZXTC2062E6TA

PCB Datasheet:1PCB Datasheet:1
XR16M2752
HIGH PERFORMANCE DUART WITH 64-BYTE FIFO
JUNE 2007
REV. P1.0.0
GENERAL DESCRIPTION
The XR16M2752
1
(M2752) is a high performance
dual universal asynchronous receiver and transmitter
(UART) with 64 byte TX and RX FIFOs. The device
operates from 1.62 to 3.6 volts and is pin-to-pin
compatible to Exar’s ST16C2552, XR16L2552,
XR16L2752 and XR16V2752. The M2752 register set
is identical to the XR16V2752 and is compatible to
the ST16C2552 and the XR16C2852 enhanced
features. It supports the Exar’s enhanced features of
programmable FIFO trigger level and FIFO level
counters, automatic hardware (RTS/CTS) and
software flow control, automatic RS-485 half duplex
direction control output and a complete modem
interface. Onboard registers provide the user with
operational status and data error flags. An internal
loopback capability allows system diagnostics.
Independent programmable baud rate generators are
provided in each channel to select data rates up to 8
Mbps at 3.3 Volt and 8X sampling clock. The M2752
is available in 44-pin PLCC and 32-pin QFN
packages.
N
OTE
:
1 Covered by U.S. Patent #5,649,122
FEATURES
1.62 to 3.6 Volt Operation
Pin-to-pin compatible to Exar’s XR16L2752
Two independent UART channels
Register set compatible to XR16L2752
Data rate of up to
8 Mbps at 3.3 V, 6.25 Mbps
at 2.5 V
and
4 Mbps at 1.8 V
with 8X sampling
rate
Fractional Baud Rate Generator
Transmit and Receive FIFOs of 64 bytes
Programmable TX and RX FIFO Trigger Levels
Transmit and Receive FIFO Level Counters
Automatic Hardware (RTS/CTS) Flow Control
Selectable Auto RTS Flow Control Hysteresis
Automatic Software (Xon/Xoff) Flow Control
Automatic RS-485 Half-duplex
Control Output via RTS#
Automatic sleep mode
Full modem interface
Direction
Wireless Infrared (IrDA 1.0) Encoder/Decoder
APPLICATIONS
Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls
F
IGURE
1. XR16M2752 B
LOCK
D
IAGRAM
Alternate Function Register
Device Identification and Revision
Crystal oscillator or external clock input
Crystal oscillator (up to 32MHz) or external clock
(up to 64MHz) input
44-PLCC and 32-QFN packages
A2:A0
D7:D0
IOR#
IOW#
CS#
CHSEL
INTA
INTB
TXRDYA#
TXRDYB#
MFA#
(OP2A#,
BAUDOUTA#, or
RXRDYA#)
1.62 V to 3.6 V VCC
GND
UART Channel A
UART
Regs
BRG
8-bit Data
Bus
Interface
64 Byte TX FIFO
TX & RX
IR
ENDEC
RXA (or RXIRA)
TXB (or TXIRB)
RXB (or RXIRB)
Crystal Osc/Buffer
XTAL1
XTAL2
CTS#A/B, RI#A/B,
CD#A/B, DSR#A/B
DTR#A/B, RTS#A/B
TXA (or TXIRA)
64 Byte RX FIFO
UART Channel B
(same as Channel A)
MFB#
(OP2B#,
BAUDOUTB#, or
RXRDYB#)
Modem Control Logic
Reset
Exar
Corporation 48720 Kato Road, Fremont CA, 94538
(510) 668-7000
FAX (510) 668-7017
www.exar.com