REV. 1.4.0 1-CH FULL-SPEED USB UART TABLE 16: I
參數資料
型號: XR21V1410IL16TR-F
廠商: Exar Corporation
文件頁數: 18/30頁
文件大?。?/td> 0K
描述: IC USB UART FIFO FULL SPD 16QFN
產品培訓模塊: XR21V141x Full-Speed USB UART Family
標準包裝: 3,000
特點: *
通道數: 1,UART
FIFO's: 128 字節(jié),384 字節(jié)
規(guī)程: USB 2.0
電源電壓: 2.97 V ~ 3.63 V
帶自動流量控制功能:
安裝類型: 表面貼裝
封裝/外殼: 16-VFQFN 裸露焊盤
供應商設備封裝: 16-QFN-EP(3x3)
包裝: 帶卷 (TR)
配用: 1016-1299-ND - EVAL BOARD FOR XR21V1410IL
XR21V1410
25
REV. 1.4.0
1-CH FULL-SPEED USB UART
TABLE 16: INTERRUPT PACKET FORMAT
TABLE 17: DATA FIELD OF STANDARD INTERRUPT PACKET
If the Exar vendor specific packet mapping is enabled then the data field also includes status for all of the
UART / GPIO pins as follows:
OFFSET
FIELD
SIZE
(BYTES)
VALUE
DESCRIPTION
0
bmRequestType
1
8’b10100001
D7 = Device-to-host direction
D6:5 = Class Type
D4-0: = Interface Recipient
1
bNotification
1
8’h20
Defined encoding for SERIAL_STATE
2
wValue
2
16’h0000
4
wIndex
2
16’h0000
D15-8 = Reserved (0)
D7-0 = Interface number, 8’h00 for the CDC Com-
mand Interface
6
wLength
2
16’h0002
2 bytes of transferred data
8
Data
2
Standard
int_status
(See
Table 17
or
Table 18)
D15-7 = Reserved (0)
D6 = bOverRun
D5 = bParity
D4 = bFraming
D3 = bRingSignal (RI)
D2 = bBreak
D1 = bTxCarrier (DSR)
D0 = bRxCarrier (CD)
BIT(S)
FIELD
DESCRIPTION
D15..D7
Reserved (0)
D6
bOverRun
Received data has been discarded due to overrun in the device.
D5
bParity
A parity error has occured.
D4
bFraming
A framing error has occured.
D3
bRingSignal
State of ring signal detection of the device.
D2
bBreak
State of break detection mechanism of the device.
D1
bTxCarrier
State of transmission carrier. This signal corresponds to V.24 signal 106 and
RS-232 signal DSR.
D0
bRxCarrier
State of receiver carrier detection mechanism of device. This signal corre-
sponds to V.24 signal 109 and RS-232 signal DCD.
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