Altera ALTDLL Instrukcja Użytkownika Strona 75
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Oceniono. / 5. Na podstawie oceny klientów
4–39 Chapter 4: Functional Description
ALTDQ_DQS Megafunction Ports
ALTDLL and ALTDQ_DQS Megafunctions User Guide © February 2012 Altera Corporation
bidir_dq_input_data_ou
t[n
b
-1..0]
Output Optional — This port outputs the bidirectional DQ signal from
the
BIDIR_DQ_INPUT_DELAY_CHAIN:dataout,
BIDIR_DQ_INPUT_FF:q, or
bidir_dq_input_data_in port.
bidir_dq_sreset
n
b
-1..0]
Input Optional GND This port is connected to all sreset port in the
bidirectional DQ IO primitives that is used to
synchronously reset the registers in those primitives.
dll_delayctrlin
5..0]
Input Optional GND This port receives the Gray-coded delay chain setting
for the DQ read path from the
delayctrlout[5..0] port of the ALTDLL.
dq_input_reg_clk Input Optional GND This port feeds the clock signal for the
<IO>_INPUT_FF:clk and <IO>_DDIO_IN:clk
ports.
dq_input_reg_clkena Input Optional V
CC
This port feeds the output enable signal for the
<IO>_INPUT_FF:ena and <IO>_DDIO_IN:ena
ports.
dq_ipa_clk Input Optional GND This port feeds the clock signal for the
<IO>_IPA_HIGH:clk and <IO>_IPA_LOW:clk
ports.
input_dq_areset
[n
i
-1..0]
Input Optional GND This port is connected to all areset port in the
input DQ IO primitives that is used to
asynchronously reset the registers in those
primitives.
input_dq_hr_input_data
_out[4*n
i
-1..0]
Output Optional — This port outputs the half-rate DDR input DQ signal
from the
INPUT_DQ_HALF_RATE_INPUT:dataout
port.
input_dq_input_data_in
[n
i
-1..0]
Input Optional GND This port feeds the input DQ signal for the
INPUT_DQ_INPUT_DELAY_CHAIN:datain,
INPUT_DQ_INPUT_FF:d,
INPUT_DQ_DDIO_IN:datain, or
input_dq_input_data_out port.
input_dq_input_data_ou
t_high[n
i
-1..0]
Output Optional — This port outputs the full-rate DDR input DQ signal
(rising edge) from the
INPUT_DQ_IPA_HIGH:dataout or
INPUT_DQ_DDIO_IN:regouthi.
input_dq_input_data_ou
t_low[n
i
-1..0]
Output Optional — This port outputs the full-rate DDR input DQ signal
(falling edge) from the
INPUT_DQ_IPA_LOW:dataout or
INPUT_DQ_DDIO_IN:regoutlo.
input_dq_input_data_ou
t[n
i
-1..0]
Output Optional — This port outputs the input DQ signal from the
INPUT_DQ_INPUT_DELAY_CHAIN:dataout,
INPUT_DQ_INPUT_FF:q, or
input_dq_input_data_in port.
input_dq_sreset
[n
i
-1..0]
Input Optional GND This port is connected to all sreset ports in the
input DQ IO primitives that is used to synchronously
reset the registers in those primitives.
Table 4–15. Megafunction Ports to Configure DQ Input Path (Part 2 of 2)
Port Name Type
Optional/
Required Default Description
- ALTDLL and ALTDQ_DQS 1
- Megafunctions User Guide 1
- UG-01032-5.0 2
- Contents 3
- 1. About these Megafunctions 5
- Features 6
- 2. Getting Started 7
- ALTOCT Megafunction 8
- Customized Controller Logic 8
- Simulate the Design 9
- Create Timing Constraints 9
- Adjust Constraints 10
- Generate the Megafunctions 11
- Settings Value 13
- Turned off 14
- Enable DQS delay chain 14
- 3. Parameter Settings 19
- [5..0] output port 20
- ALTDLL Parameter Editor 21
- ALTDQ_DQS Parameter Editor 23
- Reset/Config Ports 26
- ports on the megafunction 27
- — DQS_OFFSETCTRL_ 27
- inputs to be registered by 28
- signals of 28
- “DQ Input Path” on page 4–8 29
- 4. Functional Description 37
- ■ DQS Input Path 38
- ■ DQ Input Path 38
- ■ DQ Output/OE Path 38
- ■ DQS Output/OE Path 38
- ■ DQ/DQS OCT Path 38
- ALTDLL Megafunction 39
- ALTDQ_DQS Megafunction 40
- DQS Input Path 42
- DQ Input Path 44
- DQ Output/OE Path 46
- DQS Output/OE Path 48
- DQ/DQS OCT Path 50
- Delay Chains 51
- Deskew Delay Chains 52
- Note to Figure 4–13: 55
- Note to Figure 4–14: 55
- Note to Figure 4–15: 56
- Note to Figure 4–16: 56
- Note to Figure 4–17: 57
- DQS_CONFIG / IO_CONFIG Block 58
- ALTDLL Megafunction Ports 67
- ALTDQ_DQS Megafunction Ports 69
- DQ OE Path Megafunction Ports 78
- DQSn I/O Path Ports 79
- DQS_CONFIG/IO_CONFIG path 81
- RLDRAM interfaces 84
- Procedure 85
- 00 FF 00 FF 99
- ■ bidir_dq_io[0] 100
- A. Clear Box Generator 102
- Clear Box Generator Options 103
- Clear Box Parameters 104
- inputs are 108
- OUTPUT_DQ 114
- Additional Information 116
- Typographic Conventions 117
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