參數(shù)資料
型號: TWL6030B1A0CMRR
廠商: TEXAS INSTRUMENTS INC
元件分類: 電源管理
英文描述: 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA187
封裝: 7 X 7 MM, 0.40 MM PITCH, GREEN, FCBGA-187
文件頁數(shù): 30/97頁
文件大小: 937K
代理商: TWL6030B1A0CMRR
Power control
32 kHz
crystal
oscillator
32 kHz
RC
oscillator
6 MHz
RC
oscillator
3 MHz
RC
oscillator
Clock
generator
32 kHz
6 MHz
HFCLKEN
6
MHz
1
MHz
32
kHz
16
Hz
CLK32KAO
CLK32KG
CLK32AUDIO
OCP-CLK(6 MHz)
G PADC-CLK(1 MHz)
S MPS-CLK(6 MHz
CGAUGE-CLK(32 kHz)
VIB-CLK(16 Hz)
TCK (multiplexer or INT functionalpd)
CHG-CLK (3 MHz)
SWCS045-027
SWCS045B
– SEPTEMBER 2010 – REVISED JUNE 2011
Figure 5. Clock System Functional Description
The RC 32-kHz oscillator provides the clock during the crystal oscillator start-up phase. A 250-ms timer clocked
by the 32-kHz crystal clock controls the switching phase from RC to crystal oscillator. The crystal clock starts in
50 ms maximum. The total crystal oscillator start-up sequence is less than 300 ms. The crystal oscillator
incorporates an analog detection mechanism of the presence of the crystal. When the crystal is not visible for a
nominal period of 500
s, the crystal oscillator is reset and the multiplexer reselects the RC 32-kHz input. The
TWL6030 device is reset with a power-on reset (POR). A crystal start-up sequence phase is reinitialized as soon
as the crystal is detected
The RC 6-MHz oscillator is principally required for the SMPS and OCP buses. If all TWL6030 groups are
configured in sleep, the TWL6030 device enters the SLEEP state. In the SLEEP state, the RC 6-MHz oscillator is
off; otherwise, the RC 6-MHz oscillator remains active. Still, if required, there is some flexibility to maintain the
6-MHz active when the TWL6030 device enters SLEEP state.
The clock generator delivers the following clocks from the RC 6-MHz oscillator:
6 MHz for the internal OCP bus
6 MHz for the seven SMPSs
1 MHz for the GPADC
32 kHz for the digital vibrator
36
Copyright
2010–2011, Texas Instruments Incorporated
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