Questions tagged [timing]
This tag is relevant to issues with timing of a protocol or a standard. This could contain UART/ IIC etc. timing as well as timing for driving a motor.
378 questions
0 votes
2 answers
82 views
Understanding Tready Timing with EEPROM Connected to PHY (Max Tready 120ms)
I’m working with a PHY device as described in the datasheet (p. 158) of this PHY, and I’m trying to understand the Tready timing with an EEPROM connected to the device. According to the datasheet, the ...
- 1,821
1 vote
2 answers
124 views
Why does the 2‑wire asynchronous handshake use this exact edge sequence?
1. Control Models Master / Slave The master controls the communication line (decides when to transmit or receive). The slave transmits or receives under the master’s command. Peer‑to‑Peer (symmetric) ...
- 193
2 votes
0 answers
39 views
How are the PSTransitionTimer/tPSTransition for USB PD interpreted?
The USB Power Delivery specification has the following to say about the timer in question: 6.6.5.1 PSTransitionTimer The PSTransitionTimer is used by the Policy Engine to timeout on a PS_RDY Message. ...
- 23.9k
4 votes
1 answer
525 views
How to generate 640x600 resolution on a VGA monitor?
If a monitor can display 640x480 and 800x600 resolutions, then is it possible to display 640x600? I am generating my own video signals with an FPGA and an LCD monitor (1680x1050 max resolution, but ...
- 247
0 votes
0 answers
101 views
Mistake in Proper Timing Constraining QSPI Flash
I have a Zynq-7020-based FPGA board and a QSPI Flash IC (Micron Serial NOR Flash Memory, part number: MT25QL128ABA). I want to interface with this flash in quad mode (i.e., using all four lanes for ...
1 vote
1 answer
79 views
SSD1306 I2C `ack` bits on Open Drain Implementation
I am trying to get an ack message response on my SSD1306. To send the signal, I am using a 27MHz FPGA clock, divided so that the clock cycle is around ...
- 641
1 vote
1 answer
110 views
SSD1306 initialisation timings I2C
I am trying to make sure I have understood the I2C timings correctly for the SSD1306. As an example, I have shared below the ...
- 641
0 votes
1 answer
90 views
Need delay circuit to pull IC pin low for 10 seconds [closed]
For a RF project I use HT12D decoder. I have sensor with digital output. Whenever sensor value changes from low to high or high to low HT12Ds TE pin must be pulled low to enable transmission for 5-10 ...
