XR16M2550IL32-F Exar Corporation, XR16M2550IL32-F Datasheet - Page 27

• Manufacturer Part Number: XR16M2550IL32-F
• Description: IC UART FIFO 16B 1.8V DUAL 32QFN
• Manufacturer: Exar Corporation
• Type: Dual UART with 16-byte FIFOsr

Specifications of XR16M2550IL32-F

• Number Of Channels: 2, DUART
• Package / Case: 32-VFQFN Exposed Pad
• Features: *
• Fifo's: 16 Byte
• Voltage - Supply: 2.25 V ~ 3.6 V
• With Auto Flow Control: Yes
• With Irda Encoder/decoder: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• With Cmos: Yes
• Mounting Type: Surface Mount
• Data Rate: 16 Mbps
• Supply Voltage (max): 3.63 V
• Supply Voltage (min): 1.62 V
• Supply Current: 0.5 mA to 2 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 45 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 1.62 V to 3.63 V
• No. Of Channels: 2
• Uart Features: Two Independent UART Channels, Device Identification & Revision
• Supply Voltage Range: 1.62V To 3.63V
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Digital Ic Case Style: QFN
• No. Of Pins: 32
• Filter Terminals: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 1016-1285

REV. 1.0.2
FCR[1]: RX FIFO Reset
This bit is only active when FCR bit-0 is a ‘1’.
•
•
FCR[2]: TX FIFO Reset
This bit is only active when FCR bit-0 is a ‘1’.
•
•
FCR[3]: DMA Mode Select
Controls the behavior of the TXRDY# and RXRDY# pins. See DMA operation section for details.
•
•
FCR[5:4]: Transmit FIFO Trigger Select (requires EFR bit-4=1)
(logic 0 = default, TX trigger level = 1)
These 2 bits set the trigger level for the transmit FIFO. The UART will issue a transmit interrupt when the
number of characters in the FIFO falls below the selected trigger level, or when it gets empty in case that the
FIFO did not get filled over the trigger level on last re-load.
must be set to ‘1’ before these bits can be accessed.
FCR[7:6]: Receive FIFO Trigger Select
(logic 0 = default, RX trigger level =1)
These 2 bits are used to set the trigger level for the receive FIFO. The UART will issue a receive interrupt when
the number of the characters in the FIFO crosses the trigger level.
The Line Control Register is used to specify the asynchronous data communication format. The word or
character length, the number of stop bits, and the parity are selected by writing the appropriate bits in this
register.
4.6
Logic 0 = No receive FIFO reset (default)
Logic 1 = Reset the receive FIFO pointers (the receive shift register is not cleared or altered). This bit will
return to a logic 0 after resetting the FIFO.
Logic 0 = No transmit FIFO reset (default).
Logic 1 = Reset the transmit FIFO pointers (the transmit shift register is not cleared or altered). This bit will
return to a logic 0 after resetting the FIFO.
Logic 0 = Normal Operation (default).
Logic 1 = DMA Mode.
Line Control Register (LCR) - Read/Write
B
FCR
IT
0
0
1
1
-7
T
ABLE
B
FCR
IT
0
1
0
1
-6
11: T
B
FCR
IT
0
0
1
1
RANSMIT AND
-5
HIGH PERFORMANCE LOW VOLTAGE DUART WITH 16-BYTE FIFO
BIT
FCR
0
1
0
1
-4
T
R
RIGGER
ECEIVE
1 (default)
R
ECEIVE
14
4
8
27
L
FIFO T
EVEL
Table 11
RIGGER
1 (default)
T
T
RANSMIT
L
RIGGER
Table 11
EVEL
14
4
8
L
below shows the selections. EFR bit-4
EVEL
shows the complete selections.
16C550, 16C2550,
16C2552, 16C554,
16C580 compatible.
S
ELECTION
C
OMPATIBILITY
XR16M2550