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參數(shù)資料
| 型號： | CYRF69213 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | Programmable Radio on Chip Low Power |
| 中文描述： | 可編程片上無線電低功耗 |
| 文件頁數(shù)： | 49/85頁 |
| 文件大?。?/td> | 731K |
| 代理商： | CYRF69213 |
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CYRF69213
Document #: 001-07552 Rev. *B
Page 49 of 85
USB Transceiver
USB Transceiver Configuration
VREG Control
Table 74.USB Transceiver Configure Register (USBXCR) [0x74] [R/W]
Bit #
7
6
5
4
3
2
1
0
Field
Read/Write
Default
Bit 7
USB Pull-up
Enable
R/W
0
USB Pull-up Enable
0 = Disable the pull-up resistor on D–
1 = Enable the pull-up resistor on D–. This pull-up is to V
CC
IF VREG is not enabled or to the internally generated 3.3V when
VREG is enabled
Reserved
USB Force State
This bit allows the state of the USB I/O pins DP and D+ to be forced to a state while USB is enabled
0 = Disable USB Force State
1 = Enable USB Force State. Allows the D– and D+ pins to be controlled by P1.1 and P1.0 respectively when the USBIO is in
USB mode. Refer to
Table 44
for more information
Note
The USB transceiver has a dedicated 3.3V regulator for USB signalling purposes and to provide for the 1.5K D– pull up. Unlike the other
3.3V regulator, this regulator cannot be controlled/accessed by firmware. When the device is suspended, this regulator is disabled along with
the bandgap (which provides the reference voltage to the regulator) and the D– line is pulled up to 5V through an alternate 6.5K resistor. During
wakeup following a suspend, the band gap and the regulator are switched on in any order. Under an extremely rare case when the device wakes
up following a bus reset condition and the voltage regulator and the band gap turn on in that particular order, there is possibility of a glitch/low
pulse occurring on the D– line. The host can misinterpret this as a deattach condition. This condition, although rare, can be avoided by keeping
the bandgap circuitry enabled during sleep. This is achieved by setting the ‘No Buzz’ bit, bit[5] in the OSC_CR0 register. This is an issue only
if the device is put to sleep during a bus reset condition
Reserved
USB Force
State
R/W
0
–
0
–
0
–
0
–
0
–
0
–
0
Bits 6:1
Bit 0
Table 75.VREG Control Register (VREGCR) [0x73] [R/W]
Bit #
Field
Read/Write
Default
Bits 7:2
Bit 1
7
6
5
4
3
2
1
0
Reserved
Keep Alive
R/W
0
VREG Enable
R/W
0
–
0
–
0
–
0
–
0
–
0
–
0
Reserved
Keep Alive
Keep Alive when set allows the voltage regulator to source up to 20 μA of current when voltage regulator is disabled,
P12CR[0],P12CR[7] should be cleared.
0 = Disabled
1 = Enabled
VREG Enable
This bit turns on the 3.3V voltage regulator. The voltage regulator only functions within specifications when V
CC
is above 4.35V.
This block should not be enabled when V
CC
is below 4.35V—although no damage or irregularities will occur if it is enabled
below 4.35V
0 = Disable the 3.3V voltage regulator output on the VREG/P1.2 pin
1 = Enable the 3.3V voltage regulator output on the VREG/P1.2 pin. GPIO functionality of P1.2 is disabled
Note
Use of the alternate drive on pins P1.3–P1.6 requires that the VREG Enable bit be set to enable the regulator and provide the alternate
voltage
Bit 0
[+] Feedback
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CYRF69213_08 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Programmable Radio on Chip Low Power |
| CYRF69213_13 | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Programmable Radio on Chip Low Power |
| CYRF69213-40LFXC | 功能描述:射頻接收器 PRoC LP COM RoHS:否 制造商:Skyworks Solutions, Inc. 類型:GPS Receiver 封裝 / 箱體:QFN-24 工作頻率:4.092 MHz 工作電源電壓:3.3 V 封裝:Reel |
| CYRF69213-40LTXC | 功能描述:8位微控制器 -MCU Programmable Radio on Chip Low Power RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
| CYRF69213A-40LFXC | 功能描述:8位微控制器 -MCU Programmable Radio on Chip Low Power RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風格:SMD/SMT |
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