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Search found 13 matches
- Thu Feb 22, 2018 7:11 pm
- Forum: Q&A
- Topic: Driving RST pin
- Replies: 6
- Views: 4056
- Thu Feb 22, 2018 6:56 pm
- Forum: Q&A
- Topic: Driving RST pin
- Replies: 6
- Views: 4056
Re: Driving RST pin
"Who will win on this logic gate fight?" What a fight? It is just AND logic, POR_N & XRST_N = RST_N. I am asking about driving RST_N pin. I've found the old doc, v1.6: I Schematics Design Check List I.3 Power on reset The RST_N and TRST_N pins are asserted (low) during or after power u...
- Thu Feb 22, 2018 3:54 pm
- Forum: Q&A
- Topic: Driving RST pin
- Replies: 6
- Views: 4056
Re: Driving RST pin
RST_N input of MPU is driven by function (TRST_N & POR_N).
Why a push-pull output is not recommended?
I don't see any reason of using OD except of the high output current.
It was a special recommendation in one of the old doc.
P.S.
It is refactoring our working custom board.
Why a push-pull output is not recommended?
I don't see any reason of using OD except of the high output current.
It was a special recommendation in one of the old doc.
P.S.
It is refactoring our working custom board.
- Thu Feb 22, 2018 2:18 pm
- Forum: Q&A
- Topic: Driving RST pin
- Replies: 6
- Views: 4056
Driving RST pin
Previous versions of MPU documentations had Errata section and it said: "To guarantee a logic low is seen on the pins RST_N, TRST_N, TMS, and TDI, the driving circuit should present an impedance of less than 100ohm to ground. Usually this is not a problem for CMOS drivers driving single inputs....
- Fri May 12, 2017 1:25 pm
- Forum: Q&A
- Topic: VDDIOT voltage
- Replies: 3
- Views: 4892
Re: VDDIOT voltage
We don't need VDDIOT. Is it good for CPU if VDDIOT will be left unpowered?
- Fri May 12, 2017 12:09 pm
- Forum: Q&A
- Topic: VDDIOT voltage
- Replies: 3
- Views: 4892
VDDIOT voltage
XE216-512-TQ128 Datasheet P.21 If the PHY supports a 3.3V IO voltage, then a 3.3V supply can be used for VDDIOT. P.23 The signal description (Section 4) specifies which I/O is powered from which power-supply VDDIOT powers the RGMII IO pins, and must be provided with 2.5V. P.29 Both VDDIOT 3v3 and VD...
- Wed May 04, 2016 9:46 am
- Forum: General Questions
- Topic: AES67 supporting
- Replies: 3
- Views: 18611
AES67 supporting
do XMOS plans to make AES67 (or newest AES70 or compatible stream) support?
- Wed Nov 25, 2015 8:14 am
- Forum: Q&A
- Topic: xCORE-200-Multichannel-Audio-Platform boot source
- Replies: 1
- Views: 1701
xCORE-200-Multichannel-Audio-Platform boot source
<t>XE216-512-TQ128-Datasheet_1.6.pdf, "8 Boot Procedure" says that boot source depends on X0D06 X0D05 X0D04.<br/> <br/> Pull-up 1K resistor on SPI_CS and internal pull-down resistors on X0D06 X0D05 X0D04 make MPU starts from QSPI Flash. Is this true?<br/> <br/> To start from xSYS X0D06 must be 1.<br...
- Tue Mar 24, 2015 9:27 am
- Forum: Q&A
- Topic: How to build project?
- Replies: 2
- Views: 2638
Answer
<t>OK.<br/> <br/> But what about second part of the question?<br/> <br/> 2) module_usb_audio\main.xc. Unresolved inclusion: "xud.h"<br/> module_usb_audio\warnings.xc. Unresolved inclusion: "customdefines.h"<br/> <br/> - I see these problems only if I open the .xc file, so it possible there are simil...
- Fri Mar 20, 2015 11:45 am
- Forum: Q&A
- Topic: How to evaluate multi audio channels in XMOS U16 based MCA k
- Replies: 2
- Views: 2758
Answer 3185
How seen 4 channels for OS?
Is this 4 separate stereo devices or one device with 4 streams?
Is this 4 separate stereo devices or one device with 4 streams?