参数资料
型号: XR21V1412IL-0B-EB
厂商: Exar Corporation
文件页数: 7/32页
文件大小: 0K
描述: EVAL BOARD FOR XR21V1412IL
产品培训模块: UART Product Overview
XR21V141x Full-Speed USB UART Family
标准包装: 1
主要目的: 接口,USB 2.0 至 UART
嵌入式:
已用 IC / 零件: XR21V1412IL
已供物品:
其它名称: 1016-1426
XR21V1412
15
REV. 1.3.0
2-CH FULL-SPEED USB UART
2.1
UART Block Numbers
The table below lists the block numbers for accessing each of the UART channels and the UART Manager..
CDC_ACM_IF
SEND_BREAK
0x21
35
val
LSB
val
MSB
0, 2,
4, 6
0
Send a break for the speci-
fied duration
XR_SET_REG
0x40
0
val
0
regis-
ter
block
0
Exar custom command: set
one 8-bit register
val: 8-bit register value
register address: see
Table 7
block number: see
Table 5
XR_GETN_REG
0xC0
1
0
regis-
ter
block count
LSB
count
MSB
Exar custom register: get
count 8-bit registers
register address: see
Table 7
block number: see
Table 5
TABLE 5: CONTROL BLOCKS
BLOCK NAME
BLOCK NUMBER
DESCRIPTION
UART Channel A
0
The configuration and control registers for UART channel A.
UART Channel B
1
The configuration and control registers for UART channel B.
UART Manager
4
The control registers for the UART Manager. The UART Manager
enables/disables the TX and RX FIFOs for each UART.
I2C EEPROM
0x65
Accesses external EEPROM via I2C interface.
UART Custom
0x66
Custom UART control registers. Enables / disables for wide mode, low
latency mode and custom interrupt packet.
TABLE 4: SUPPORTED USB CONTROL COMMANDS
NAME
REQUEST
TYPE
REQUEST
VALUE
INDEX
LENGTH
DESCRIPTION
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