参数资料
型号: MC34708VM
厂商: Freescale Semiconductor
文件页数: 89/159页
文件大小: 0K
描述: IC POWER MANAGEMENT 206MAPBGA
标准包装: 160
应用: 通用
电源电压: 1.8 V ~ 4.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 206-LFBGA
供应商设备封装: 206-MAPBGA(13x13)
包装: 托盘
Functional Block Description
will reset to a 1, when either RESETB is valid or VBUS is invalid. This allows the VUSBEN regulator to be enabled automatically
if the VUSB regulator was disabled by software. With PUMS4:1 equal to [0100], the VUSBEN bit will be enabled in the power up
sequence.
The MC34708 also supports USB OTG mode by supplying 5.0 V to the VBUS pin. The OTGEN SPI bit along with the VUSBSEL
SPI bit, control switching the SWBST to drive VBUS in OTG mode. When OTGEN = 1 and VUSBSEL = 1, SWBST will be driving
the VBUS (switch M1 and MOTG are closed, and the M0 switch is open). When OTG mode is disabled, the switch (MOTG) from
VINUSB to VBUS will be open.
In OTG mode, the VUSB regulator is enabled by setting the VUSBEN SPI bit to a 1. When SWBST is supplying the VBUS pin
(OTG Mode), it will generate a USBDET interrupt. The USBDET interrupt while in OTG mode should not be interpreted as being
powered by the host by software.
Table 87. VUSB/OTG Switch Configuration
Mode
OTGEN VUSBSEL Switches Enabled (Closed) Switches Disabled (Open)
VUSB powered from VBUS pin
VUSB powered from VINUSB pin
Invalid option
OTG Mode (VUSB powered from VINUSB pin and SWBST
0
0
1
1
0
1
0
1
M0
M1
-
M1, MOTG
M1, MOTG
M0, MOTG
-
M0
Table 88. VUSB Electrical Characteristics
Characteristics noted under conditions BP = 3.6 V, V BUS = 5.0 V, - 40 ? C ? T A ? 85 ? C, unless otherwise noted. Typical values
at BP = 3.6 V and T A = 25 °C under nominal conditions, unless otherwise noted.
Symbol
Characteristic
Min
Typ
Max
Unit
Notes
VUSB REGULATOR
V USBIN
Operating Input Voltage Range V INMIN to V INMAX
V
? Supplied by VBUS
? Supplied by SWBST
4.4
-
5.0
-
5.25
5.75
I USB
Operating Current Load Range IL MIN to IL MAX
0.0
-
100
mA
VUSB ACTIVE MODE - DC
V USB
Output Voltage V OUT
V
V USBLOPP
V USBLIPP
t OFF-VUSB
? V INMIN < V IN < V INMAX IL MIN < IL < IL MA
Load Regulation
? 0 < IL < IL MAX from DM / DP, For any V INMIN < V IN < V INMAX
Line Regulation
? V INMIN < V IN < V INMAX , For any IL MIN < IL < IL MAX
Turn-off Time
? Disable to 0.8 V, per USB OTG specification parameter
V NOM - 4%
-
-
-
3.3
1.0
-
-
V NOM + 4%
-
20
1.3
mV/mA
mV
sec
VA_SESS_VLD V IN = V INMIN , V INMAX IL = 0
VUSB ACTIVE MODE - AC
VUSB PSRR PSRR - IL = 75% of IL MAX 20 Hz to 20 kHz
dB
7.8.4.2
? V IN = V INMIN + 100 mV
Accessory Identification
-
65
-
The MC34708 monitors both the ID pin and the VBUS pin. When an accessory attachment is detected, the accessory
identification state machine will enter Active mode to start the identification flow. The ID detection state machine will determine
MC34708
Analog Integrated Circuit Device Data ?
89
Freescale Semiconductor
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