參數(shù)資料
型號(hào)： CYWUSB6934-48LFXC
廠商： CYPRESS SEMICONDUCTOR CORP
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Multiconductor Cable; Number of Conductors:2; Conductor Size AWG:18; No. Strands x Strand Size:7 x 26; Jacket Material:Polyvinylchloride (PVC); Leaded Process Compatible:Yes; Capacitance:30pF/ft; Conductor Material:Copper RoHS Compliant: Yes
中文描述： SPECIALTY TELECOM CIRCUIT, QCC48
封裝： 7 X 7 MM, LEAD FREE, MO-220, QFN-48
文件頁數(shù)： 28/30頁
文件大小： 305K
代理商： CYWUSB6934-48LFXC
CYWUSB6932
CYWUSB6934
Document 38-16007 Rev. *G
Page 28 of 30
12.2
Power Management Timing
Notes:
22. The PD pin must be asserted at power up to ensure proper crystal startup.
23. When X13OUT is enabled.
24. Both the polarity and the drive method of the IRQ pin are programmable. See
page 9
for more details.
Figure 12-6
illustrates default values for the Configuration
register (Reg 0x05, bits 1:0).
25. A wakeup event is triggered when the PD pin is deasserted.
Figure 12-6
illustrates a wakeup event configured to trigger an IRQ pin event via the Wake Enable
register (Reg 0x1C, bit 0=1).
26. Measured with CTS ATXN6077A crystal.
Table 12-4. Power Management Timing
(The values below are dependent upon oscillator network component selection)
[26]
Parameter
t
PDN_X13
t
SPI_RDY
t
PWR_RST
t
RST
t
PWR_PD
t
WAKE
t
PD
t
SLEEP
t
WAKE_INT
t
STABLE
t
STABLE2
Description
Conditions
Min.
Typ
2000
Max.
Unit
μs
μs
μs
μs
μs
μs
μs
ns
μs
μs
us
Time from PD deassert to X13OUT
Time from oscillator stable to start of SPI transactions
Power On to RESET deasserted
Minimum RESET asserted pulse width
Power On to PD deasserted
[22]
PD deassert to clocks running
[23]
Minimum PD asserted pulse width
PD assert to low power mode
PD deassert to IRQ
[24]
assert (wake interrupt)
[25]
PD deassert to clock stable
IRQ assert (wake interrupt) to clock stable
1
V
cc
@ 2.7V
1300
1
1300
2000
10
50
2000
2100
2100
to within ±10 ppm
to within ±10 ppm
Figure 12-5. Power On Reset/Reset Timing
Figure 12-6. Sleep / Wake Timing
VCC
RESET
PD
X13OUT
t
PW R_RST
t
PWR_PD
t
SPI_RDY
t
RST
t
PDN_X13
STARTUP
IRQ
X13OUT
t
WAKE_INT
t
WAKE
t
PD
t
SLEEP
PD
SLEEP
WAKE
IRQ
t
STABLE
t
STABLE2
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