Sorry for the late response.
For your questions, please see the following comments.
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Q1)Can I consider all registers written by I2C below?
Register Address: 0x10 ~ 15, 0x20 ~ 25, 0x30 ~ 35, 0x40 ~ 45, 0x50 ~ 57
Answer: For CY29411, customer can write the following address: 0x10~0x15(FS0),0x50-0x57(Common configurations), 0xD4~0xD6(user configurable information, free to write, not effect to the device functionality).
Q2)Also, does the CLK_P, N output come out unless the operation called "Loop Lock" shown in Fig. 3 of CY2941x / CY2942x datasheet 002-03966 Rev. * C is performed?
Answer:User will see the output when state machine in the device gets “Active” state. in order to move the state from “Command Wait” to “Active”, it needs the procedures that described in section 5 programming interface in AN210253. Otherwise, we can’t guarantee the behavior of the device.
Q3)Also, what kind of operation "Loop Lock" is specifically in I2C Should I set it?
Answer: The “Loop Lock” command is shown below:
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If I was correct, customer was using the blank part of CY29411.
For the blank part, the device will enter “command wait state” when power is on.
Customer needs to write the configuration data into the device and issue some specific commands so that the device could output the clock signal.
There are two ways to get output from the device: “functional programming” and “eFuse programming”.
“Functional programming” will get output without programming the eFuse-OTP-, the setting will be loss when power is down.
“eFuse programming” will write the configuration data into the device OTP area permanently.
The program routines for these two programming method are shown below:
For more details, please refer to section 5 programming interface in AN210253 - CY294xx High-Performance Clock: Getting Started and Best Design Practices.
Hello Ryan san
>Are there ACK signals when sending the I2C command?
➡ Yes, ACK response has been confirmed.I will attach the communication waveform below.This waveform is when Slave Address: 0x55, Data: 0xAA is written to Register @ Address: 0xD4, and the register is read immediately.
ACK and NACK are occurring correctly.
(Reading also returns write data correctly)
>Was OE pin enabled?
➡ Yes
Q1)
Can I consider all registers written by I2C below?
Register Address: 0x10 ~ 15, 0x20 ~ 25, 0x30 ~ 35, 0x40 ~ 45, 0x50 ~ 57
Q2)
Also, does the CLK_P, N output come out unless the operation called "Loop Lock" shown in Fig. 3 of CY2941x / CY2942x datasheet 002-03966 Rev. * C is performed?
Q3)
Also, what kind of operation "Loop Lock" is specifically in I2C Should I set it?
Best Regards
Arai
Sorry for the late response.
For your questions, please see the following comments.
---------------------------------------------------
Q1)Can I consider all registers written by I2C below?
Register Address: 0x10 ~ 15, 0x20 ~ 25, 0x30 ~ 35, 0x40 ~ 45, 0x50 ~ 57
Answer: For CY29411, customer can write the following address: 0x10~0x15(FS0),0x50-0x57(Common configurations), 0xD4~0xD6(user configurable information, free to write, not effect to the device functionality).
Q2)Also, does the CLK_P, N output come out unless the operation called "Loop Lock" shown in Fig. 3 of CY2941x / CY2942x datasheet 002-03966 Rev. * C is performed?
Answer:User will see the output when state machine in the device gets “Active” state. in order to move the state from “Command Wait” to “Active”, it needs the procedures that described in section 5 programming interface in AN210253. Otherwise, we can’t guarantee the behavior of the device.
Q3)Also, what kind of operation "Loop Lock" is specifically in I2C Should I set it?
Answer: The “Loop Lock” command is shown below:
------------------------------------------------------
If I was correct, customer was using the blank part of CY29411.
For the blank part, the device will enter “command wait state” when power is on.
Customer needs to write the configuration data into the device and issue some specific commands so that the device could output the clock signal.
There are two ways to get output from the device: “functional programming” and “eFuse programming”.
“Functional programming” will get output without programming the eFuse-OTP-, the setting will be loss when power is down.
“eFuse programming” will write the configuration data into the device OTP area permanently.
The program routines for these two programming method are shown below:
For more details, please refer to section 5 programming interface in AN210253 - CY294xx High-Performance Clock: Getting Started and Best Design Practices.
