Zakładka z wyszukiwarką danych komponentów |
|
CDCEL913IPWRQ1 Arkusz danych(PDF) 11 Page - Texas Instruments |
|
|
CDCEL913IPWRQ1 Arkusz danych(HTML) 11 Page - Texas Instruments |
11 / 27 page EEPROM Xin Xout GND LV CMOS Pdiv1 =1 LV CMOS Pdiv3 = 1 Pdiv2 = 1 LV CMOS InputClock PLL Bypass PLL 1 powerdown S0 SDA SCL ProgrammingBus 27MHz Crystal 1=OutputEnabled 0=Output3-State X-tal Programming and SDA/SCL Register VDD VDDOUT Y1=27MHz Y2=27MHz Y3=27MHz CDCE913-Q1 CDCEL913-Q1 www.ti.com SCAS918A – JUNE 2013 The S1SDA and S2SCL pins of the CDCE913-Q1 and CDCEL913-Q1 are dual-function pins. In the default configuration, they are defined as SDA/SCL for the serial programming interface. They can be programmed as control pins (S1 and S2) by setting the appropriate bits in the EEPROM. Note that changes to the control register (Bit [6] of byte 02h) have no effect until they are written into the EEPROM. Once they are set as control pins, the serial programming interface is no longer available. However, if VDDOUT is forced to GND, the two control pins, S1 and S2, temporally act as serial programming pins (SDA/SCL). S0 is not a multi-use pin; it is a control pin only. DEFAULT DEVICE CONFIGURATION The internal EEPROM of CDCE913-Q1 and CDCEL913-Q1 is pre-configured with a factory default configuration as shown in Figure 6 (The input frequency is passed through the output as a default).This allows the device to operate in default mode without the extra production step of programming it. The default setting appears after power is supplied or after a power-down and power-up sequence until the device is reprogrammed by the user to a different application configuration. A new register setting is programmed via the serial SDA/SCL interface. Figure 6. Default Configuration Table 4 shows the factory default setting for the Control Terminal Register. Note that even though eight different register settings are possible, in the default configuration, only the first two settings (0 and 1) can be selected with S0, as S1 and S2 are configured as programming pins in default mode. Table 4. Factory Default Setting for Control Terminal Register(1) Y1 PLL1 Settings External Control Pins Output Selection Frequency Selection SSC Selection Output Selection S2 S1 S0 Y1 FS1 SSC1 Y2Y3 SCL (I2C) SDA (I2C) 0 3-state fVCO1_0 off 3-state SCL (I2C) SDA (I2C) 1 Enabled fVCO1_0 off Enabled (1) In default mode or when programmed respectively, S1 and S2 act as serial programming interface, SDA/SCL. They do not have any control-pin function but they are internally interpreted as if S1 = 0 and S2 = 0. S0, however, is a control pin, which in the default mode switches all outputs ON or OFF (as previously predefined). SDA/SCL SERIAL INTERFACE The CDCE913-Q1 and CDCEL913-Q1 operate as a slave device of the 2-wire serial SDA/SCL bus, compatible with the popular SMBus or I2C specification. It operates in the standard-mode transfer (up to 100 kbits) and fast- mode transfer (up to 400 kbits) and supports 7-bit addressing. The S1SDA and S2SCL pins of the CDCE913-Q1 and CDCEL913-Q1 are dual-function pins. In the default configuration, they are used as the SDA/SCL serial programming interface. They can be re-programmed as general-purpose control pins, S1 and S2, by changing the corresponding EEPROM setting, byte 02h, bit [6]. Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Links: CDCE913-Q1 CDCEL913-Q1 |
Podobny numer części - CDCEL913IPWRQ1 |
|
Podobny opis - CDCEL913IPWRQ1 |
|
|
Link URL |
Polityka prywatności |
ALLDATASHEET.PL |
Czy Alldatasheet okazała się pomocna? [ DONATE ] |
O Alldatasheet | Reklama | Kontakt | Polityka prywatności | Linki | Lista producentów All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |