xr21v1412 Exar Corporation, xr21v1412 Datasheet - Page 12

• Manufacturer Part Number: xr21v1412
• Description: 2-ch Full-speed Usb Uart
• Manufacturer: Exar Corporation

XR21V1412
2-CH FULL-SPEED USB UART
The table below lists the block numbers for accessing each of the UART channels and the UART Manager..
2.1
UART Channel A
UART Channel B
UART Manager
B
XR_GETN_REG
SEND_BREAK
XR_SET_REG
CDC_ACM_IF
LOCK
Reserved
UART Block Numbers
N
AME
N
AME
B
LOCK
R
EQUEST
0xC0
2-3
T
0x21
0x40
T
0
1
4
N
YPE
ABLE
UMBER
3: S
R
EQUEST
T
UPPORTED
35
0
1
ABLE
The configuration and control registers for UART channel A.
The configuration and control registers for UART channel B.
Block Numbers 2-3 are reserved.
The control registers for the UART Manager. The UART Manager
enables/disables the TX and RX FIFOs for each UART.
4: C
LSB
val
val
0
V
ONTROL
USB C
ALUE
12
MSB
val
0
0
ONTROL
B
regis-
regis-
0, 2,
LOCKS
4, 6
ter
ter
I
NDEX
C
block
block count
OMMANDS
0
D
ESCRIPTION
LSB
0
0
L
ENGTH
count
MSB
0
0
Exar custom command: set
block number: see
block number: see
Send a break for the speci-
Exar custom register: get
val: 8-bit register value
register address: see
register address: see
count 8-bit registers
one 8-bit register
D
fied duration
ESCRIPTION
Table 6
Table 6
REV. 1.0.0
Table 4
Table 4