xr21b1411 Exar Corporation, xr21b1411 Datasheet - Page 19

• Manufacturer Part Number: xr21b1411
• Description: Enhanced 1-ch Full-speed Usb Uart
• Manufacturer: Exar Corporation

REV. 1.1.0
If the Exar vendor specific packet mapping is enabled then the data field also includes interrupt status for all of
the UART / GPIO pins as follows:
D15..D7
B
D6
D5
D4
D3
D2
D1
D0
ITS
T
ABLE
bRingSignal
bRxCarrier
bTxCarrier
B
bOverRun
bFraming
10: D
IT
bParity
bBreak
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
F
(
IELD
S
)
ATA
T
ABLE
F
IELD OF
F
D15
D14
D13
D12
D10
D11
Reserved (future use)
Received data has been discarded due to overrun in the device.
A parity error has occured.
A framing error has occured.
State of ring signal detection of the device.
State of break detection mechanism of the device.
State of transmission carrier. This signal corresponds to V.24 signal 106 and
RS-232 signal DSR.
State of receiver carrier detection mechanism of device. This signal corre-
sponds to V.24 signal 109 and RS-232 signal DCD.
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
IELD
9: D
ATA
C
USTOMIZED
F
Reserved (0)
bGPIO5 (RTS)
bGPIO4 (CTS)
bGPIO3 (DTR)
bGPIO0 (RI)
Reserved (0)
bGPIO2 (DSR)
bGPIO1 (CD)
Reserved (0)
bOverRun
bParity
bFraming
bRingSignal (RI)
bBreak
bTxCarrier (DSR)
bRxCarrier (CD)
IELD OF
S
I
NTERRUPT
19
TANDARD
D
ESCRIPTION
ENHANCED 1-CH FULL-SPEED USB UART
I
P
D
NTERRUPT
ACKET
ESCRIPTION
- E
P
XAR
ACKET
V
ENDOR
S
PECIFIC
XR21B1411