xr21b1411 Exar Corporation, xr21b1411 Datasheet - Page 10

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

XR21B1411
ENHANCED 1-CH FULL-SPEED USB UART
The following table shows all of the USB Control Commands that are supported by the B1411. Commands
include standard USB commands, CDC-ACM commands and custom Exar commands. .
2.0 USB CONTROL COMMANDS
GET_CONFIGURATION
DEV CLEAR_FEATURE
SET_CONFIGURATION
SET_CONTROL_LINE_
EP CLEAR_FEATURE
DEV SET_FEATURE
DEV SET_FEATURE
GET_LINE_CODING
SET_LINE_CODING
GET_DESCRIPTOR
GET_DESCRIPTOR
GET_DESCRIPTOR
DEV GET_STATUS
EP SET_FEATURE
GET_INTERFACE
EP GET_STATUS
IF GET_STATUS
SET_ADDRESS
SEND_BREAK
CDC_ACM_IF
CDC_ACM_IF
CDC_ACM_IF
CDC_ACM_IF
STATE
N
AME
R
EQUEST
0x80
0x81
0x82
0x00
0x02
0x00
0x00
0x02
0x00
0x80
0x80
0x80
0x80
0x00
0x81
0x21
0xA1
0x21
0x21
T
YPE
T
ABLE
R
EQUEST
2: S
10
32
33
34
35
0
0
0
1
1
3
3
3
5
6
6
6
8
9
UPPORTED
(Note
addr
LSB
val
val
2)
0
0
0
1
0
1
2
0
0
0
0
0
n
0
0
0
V
ALUE
MSB
USB C
val
0
0
0
0
0
0
0
0
0
1
2
3
0
0
0
0
0
0
10
129,
129,
129,
0, 1
0,1,
133
0,1,
133
133
0-1
ONTROL
1,
0
0
0
0
0
0
0
0
0
0
0
0
0
0
I
NDEX
test
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
C
OMMANDS
(Note
LSB
LSB
LSB
len
len
len
1)
2
2
2
0
0
0
0
0
0
1
0
1
7
7
0
0
L
ENGTH
MSB
MSB
MSB
len
len
len
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Test mode - factory use only
Send a break for the speci-
Device: remote wake-up +
Get the UART baud rate,
Set the UART baud rate,
Configuration descriptor
Device remote wake-up
Device remote wake-up
Set UART control lines
parity, stop bits, etc.
parity, stop bits, etc.
Device descriptor
Endpoint: halted
String descriptor
Interface: zero
Endpoint halt
Endpoint halt
self-powered
D
fied duration
ESCRIPTION
n = 0,1
REV. 1.1.0