![Altera Cyclone IV Скачать руководство пользователя страница 391](http://html1.mh-extra.com/html/altera/cyclone-iv/cyclone-iv_device-handbook_2910785391.webp)
Chapter 2: Cyclone IV Reset Control and Power Down
2–17
Transceiver Reset Sequences
September 2014
Altera Corporation
PCIe Functional Mode
You can configure PCIe functional mode with or without the receiver clock rate
compensation FIFO in the Cyclone IV GX device. The reset sequence remains the
same whether or not you use the receiver clock rate compensation FIFO.
PCIe Reset Sequence
The PCIe protocol consists of an initialization/compliance phase and a normal
operation phase. The reset sequences for these two phases are described based on the
timing diagram in
Figure 2–10. Reset Sequence of PCIe Functional Mode
Notes to
(1) This timing diagram is drawn based on the PCIe Gen 1 ×1 mode.
(2) For bonded PCIe Gen 1 ×2 and ×4 modes, there will be additional
rx_freqlocked[n]
signal. n=number of channels.
(3) For t
LTD_Manual
duration, refer to the
chapter.
(4) For t
LTD_Auto
duration, refer to the
(5) The
busy
signal is asserted and deasserted only during initial power up when offset cancellation occurs. In subsequent reset sequences, the
busy
signal is asserted and deasserted only if there is a read or write operation to the ALTGX_RECONFIG megafunction.
1
2
3
4
6
7
8
Ignore receive data
9
10
11
12
Two parallel
clock cycles
> two parallel
clock cycles
_
5
1
μ
s
Reset / Power Down Signals
Output Status Signals
busy
(5)
pll_areset
tx_digitalreset
rx_analogreset
rx_digitalreset
rx_freqlocked
pll_locked
Initialization / Compliance Phase
Normal Operation Phase
t
LTD_Manual
(3)
t
LTD_Auto
(4)
Содержание Cyclone IV
Страница 10: ...x Chapter Revision Dates Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 14: ...I 2 Section I Device Core Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 106: ...II 2 Section II I O Interfaces Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 164: ...III 2 Section III System Integration Cyclone IV Device Handbook March 2016 Altera Corporation Volume 1...
Страница 274: ...vi Contents Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Страница 276: ...viii Chapter Revision Dates Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Страница 280: ...I 2 Section I Transceivers Cyclone IV Device Handbook February 2015 Altera Corporation Volume 2...
Страница 440: ...iv Contents Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
Страница 442: ...vi Chapter Revision Dates Cyclone IV Device Handbook December 2016 Altera Corporation Volume 3...
Страница 446: ......