EPI 16bit Host Bus / ADMUX mode / burst mode timing on TM4C129

Hiroyasu Tazawa1

Other Parts Discussed in Thread: TM4C1294KCPDT

Hi, Everyone

I have a question.
We use EPI of TM4C1294kcpdt

I wanna know EPI read timing of 16bit Host Bus / ADMUX mode / burst mode ON.
Datasheet shows timing of 16bit Host Bus / ADMUX mode

Figure 27-23. Host-Bus 8/16 Mode Asynchronous Muxed Read Timing
Figure 27-24. Host-Bus 8/16 Mode Asynchronous Muxed Write Timing

Can you show me timing of burst mode added ?
What change burst mode add on?

Best Regards
Hiroyasu

over 9 years ago

0 Amit Ashara over 9 years ago

TI__Guru**** 244400 points

Hello Hiroyasu

The Burst mode timing for HB16, ADMUS should be the same as PSRAM operation diagram in the EPI section.

Regards
Amit

0 Hiroyasu Tazawa1 over 9 years ago in reply to Amit Ashara

Guru 12350 points

Hi, Amit

Thank you for your reply.

I wanna make sure what is same.
I understand behavior of HB16 Burst Data signal and PSRAM Burst Data signal
are same. I guess There are not all.

This understanding is correct ?

Best Regards
Hiroyasu

0 Amit Ashara over 9 years ago in reply to Hiroyasu Tazawa1

TI__Guru**** 244400 points

Hello Hiroyasu

Yes. The burst mode behavior is the same.

Regards
Amit

0 Hiroyasu Tazawa1 over 9 years ago in reply to Amit Ashara

Guru 12350 points

Hi, Amit

Thank you for your reply,
I got it.

Best Regrds
Hiroyasu

0 Hiroyasu Tazawa1 over 9 years ago in reply to Amit Ashara

Guru 12350 points

Hi, Amit

I have an another question.

I understand MAX 28bit(256MB) address at 16bit Host Bus / ADMUX mode / burst mode
like Datasheet Table 11-9 says

○Datasheet
www.tij.co.jp/.../tm4c1294kcpdt.pdf
Table 11-9. EPI Host-Bus 16 Signal Connections

This understanding is correct ?

Best Regards
Hiroyasu

0 Amit Ashara over 9 years ago in reply to Hiroyasu Tazawa1

TI__Guru**** 244400 points

Hello Hiroyasu

When specifying an external component I would appreciate the full part number and/or link to the datasheet

Regards
Amit

0 Hiroyasu Tazawa1 over 9 years ago in reply to Amit Ashara

Guru 12350 points

Hi, Amit

My customer says external component is FPGA.
but I do not heard some detail.

I just want to know what MAX address at 16bit Host Bus / ADMUX mode / burst mode.
Do you know that ? 28bit?

Best Regards
Hiroyasu

0 Amit Ashara over 9 years ago in reply to Hiroyasu Tazawa1

TI__Guru**** 244400 points

Hello Hiroyasu,

Please look at the table "Capabilities of Host Bus 8 and Host Bus 16 Modes". Based on which setting of CSCFG and CSCFGEXT, the addressing capability changes

Regards
Amit

0 Hiroyasu Tazawa1 over 9 years ago in reply to Amit Ashara

Guru 12350 points

Hi, Amit

I understrand your answer is Max 28bit even if burst mode.
because Datasheet "Capabilities of Host Bus 8 and Host Bus 16 Modes"
says Max 28bit.
Thank you, Amit.

Best Regards
Hiroyasu

0 Amit Ashara over 9 years ago in reply to Hiroyasu Tazawa1

TI__Guru**** 244400 points

Hello Hiroyasu,

Yes. The addressing capability does not depend on the burst mode.

Regards
Amit

0 Hiroyasu Tazawa1 over 9 years ago in reply to Amit Ashara

Guru 12350 points

Hi, Amit

Thank you !
I got it.

Best Regards
Hiroyasu

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EPI 16bit Host Bus / ADMUX mode / burst mode timing on TM4C129