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參數(shù)資料
| 型號： | XR21V1410IL16-F |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 30/30頁 |
| 文件大小： | 0K |
| 描述： | IC UART FIFO USB SGL 16QFN |
| 產(chǎn)品培訓(xùn)模塊： | UART Product Overview XR21V141x Full-Speed USB UART Family |
| 產(chǎn)品變化通告： | XR21V1410IL16-F Packing Change 26/Jan/2011 |
| 特色產(chǎn)品： | XR21V141x Full-Speed USB UART |
| 標(biāo)準(zhǔn)包裝： | 490 |
| 特點： | * |
| 通道數(shù)： | 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： | 是 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 16-QFN-EP（3x3） |
| 包裝： | 散裝 |
| 配用： | 1016-1299-ND - EVAL BOARD FOR XR21V1410IL |
| 其它名稱： | 1016-1300 |
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XR21V1410
9
REV. 1.4.0
1-CH FULL-SPEED USB UART
the USB host, i.e. it will not wait for 3 character times.
The custom driver can automatically set the
RX_FIFO_LOW_LATENCY register bit to force the V1410 to be in the low latency mode, or the user may
manually set this bit. With the CDC-ACM driver, the low latency mode is automatically set whenever the baud
rate is set to a value of less than 46921 bps using the CDC_ACM_IF_SET_LINE_CODING command.
1.5.4
GPIO
The UART has 6 GPIOs. By hardware default the GPIOs are configured as inputs but may be modified by a
custom driver. Additionally, there are several modes that can be enabled to add additional feature such as
auto RTS/CTS flow control, auto DTR/DSR flow control or auto RS-485 half duplex control. See Table 14.
1.5.5
Automatic RTS/CTS Hardware Flow Control
GPIO5 and GPIO4 of the UART channel can be enabled as the RTS# and CTS# signals for Auto RTS/CTS
flow control when GPIO_MODE[2:0] = ’001’ and FLOW_CONTROL[2:0] = ’001’. Automatic RTS flow control is
used to prevent data overrun errors in local RX FIFO by de-asserting the RTS signal to the remote UART.
When there is room in the RX FIFO, the RTS pin will be re-asserted. Automatic CTS flow control is used to
prevent data overrun to the remote RX FIFO. The CTS# input is monitored to suspend/restart the local
transmitter (see Figure 5):
1.5.6
Automatic DTR/DSR Hardware Flow Control
Auto DTR/DSR hardware flow control behaves the same as the Auto RTS/CTS hardware flow control
described above except that it uses the DTR# and DSR# signals.
For Auto hardware flow control,
FLOW_CONTROL[2:0] = ’001’.
GPIO3 and GPIO2 become DTR# and DSR#, respectively, when
GPIO_MODE[2:0] = ’010’.
FIGURE 5. AUTO RTS AND CTS FLOW CONTROL OPERATION
T ra n s m itte r
A u to C T S
M o n ito r
R e c e iv e r F IF O
T rig g e r R e a c h e d
A u to R T S
T rig g e r L e v e l
R e m o te U A R T
U A R T B
R T S A #
C T S B #
T X B
R X A
O N
O F F
O N
O F F
1
2
3
4
1 ) C O M p o rt o p e n e d , R X F IF O e m p ty , R T S A # o u tp u t is a s s e rte d
2 ) S ig n a l p ro p a g a te d to C T S B # in p u t
3 ) D a ta b y te s e n te r T X F IF O , b e g in tra n s m ittin g o n T X B
4 ) D a ta p ro p a g a te s to R e c e iv in g d e v ic e R X A
5 ) R X F IF O re a c h e s th re s h o ld
6 ) R T S A # d e -a s s e rts
7 ) S ig n a l p ro p a g a te s to C T S B # in p u t
8 ) T ra n s m is s io n s to p s o n T X B
9 ) U S B B u lk -In e m p tie s R X F IF O b e lo w th re s h o ld , R T S A # is a s s e rte d
1 0 ) S ig n a l p ro p a g a te d to C T S B # in p u t
1 1 ) D a ta b y te s re s u m e tra n s m ittin g o n T X B
5
6
7
8
9
1 0
1 1
R T S A #
C T S B #
T X B
R X A
C T S A #
T X A
R T S B #
R X B
R e c e iv e r F IF O
T rig g e r R e a c h e d
A u to R T S
T rig g e r L e v e l
T ra n s m itte r
A u to C T S
M o n ito r
L o c a l U A R T
U A R T A
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XR21V1410IL16TR-F | 功能描述:USB 接口集成電路 1 Chan FS USB UART w/ 256 Byte FIFO RoHS:否 制造商:Cypress Semiconductor 產(chǎn)品:USB 2.0 數(shù)據(jù)速率: 接口類型:SPI 工作電源電壓:3.15 V to 3.45 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WLCSP-20 |
| XR21V1412 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2-CH FULL-SPEED USB UART |
| XR21V1412_10 | 制造商:EXAR 制造商全稱:EXAR 功能描述:2-CH FULL-SPEED USB UART |
| XR21V1412IL-0A-EB | 功能描述:界面開發(fā)工具 EVAL BOARD FOR XR21V1412IL32-F RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| XR21V1412IL-0B-EB | 功能描述:界面開發(fā)工具 For XR21V1412 QFN32 USB, RS232;No Cables RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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