參數(shù)資料
型號(hào)： P95020ZLLG8
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 電源管理
英文描述： 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA124
封裝： LLGA-124
文件頁數(shù)： 96/137頁
文件大?。?/td> 3533K
代理商： P95020ZLLG8
P95020 / Preliminary Datasheet
Revision 0.7.10
61
2010 Integrated Device Technology, Inc.
4.0 CLOCK GENERATOR MODULE
FEATURES
High-quality, high-frequency external clock outputs
generated from a TCXO input or a crysal contected
between HXTALIN and HXTALOUT.
32.768 kHz crystal oscillator or 32.768 kHz clock input
for system start-up
3.3V core operating voltage
1.2V/1.8V TCXO output voltage
3.3V SYS_CLK, USB_CLK and 32KHZ clock output
voltages
DESCRIPTION
The P95020 includes a highly accurate, low power clock
synthesizer designed exclusively for portable applications.
The P95020 will generate high quality, high-frequency
clock outputs from a 12 MHz, 13 MHz, 19.2 MHz or 26
MHz TCXO input or crystal oscillator. The P95020
s clock
generator (CKGEN) module also includes a 32 kHz
oscillator and output, which are connected to a separate
low power supply, to facilitate system start-up.
PLL
Xtal oscillator,
RC-Oscillator
dividers
CLK32K
12MHz
24MHz
48MHz
HXTAL
OSC
VDDIO_CK
VDD_CKGEN33
VDDIO_CK
SYS_CLK
USB_CLK
32KHZ_OUT2
H
X
T
A
L
O
U
T
/
T
C
X
O
_
IN
I2C
SUB-BLOCK
MICROCONTROLLER
SUB-BLOCK
UPPER BYTE
OFFSET: 0xA0
H
X
T
A
L
IN
/
T
C
X
O
_
O
U
T
1
3
2
K
H
Z
_
C
L
K
IN
/
X
T
A
L
IN
3
2
K
H
Z
_
O
U
T
1
/
X
T
A
L
O
U
T
PLL STATUS REGISTER
0x35 [7:0]
VDDIO_CK
CKGEN PLL CONFIGURATION REGISTER
0x34 [7:0]
CKGEN_GND
TCXO_OUT2
Figure 14
– Clock Generator Block Diagram
4.1
CKGEN - PIN DEFINITIONS
PIN #
PIN_ID
DESCRIPTION
041
32KHZ_OUT2
Buffered 32.768 kHz Output #2
042
CKGEN_GND
PLL Analog Ground
043
32KHZ_CLKIN/XTALIN
32KHZ_CLKIN: External 32.768 kHz clock input
XTALIN : Input pin when used with an external crystal
044
XTALOUT/32KHZ_OUT1
XTALOUT: Output pin when used with an external crystal
32KHZ_OUT1: When XTALIN is connected to a 32 kHz input this pin can be a 32 kHz output when bit 4 of
the CKGEN_PLL_STATUS register is set to 1.
045
VDD_CKGEN18
Internal 1.8V CKGEN LDO. Connect filter capacitor from this pin to CKGEN_GND
046
HXTALOUT/TCXO_IN
HXTALOUT: 12 MHz, 13 MHz, 19.2 MHz or 26 MHz Crystal oscillator output
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