Altera ALTDLL Uživatelský manuál Strana 80
- Strana / 117
- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
Chapter 4: Functional Description 4–44
ALTDQ_DQS Megafunction Ports
© February 2012 Altera Corporation ALTDLL and ALTDQ_DQS Megafunctions User Guide
dqsn_input_data_out Output Optional — This port outputs the signal from the DQSn input
path. This port is connected to the
DQSN_INPUT_DELAY_CHAIN:dataout or
dqsn_input_data_in port.
dqsn_oe_in Input Optional GND This port feeds the input signal for the DQSn OE
path. This port is connected to the
DQSN_OE_FF:d, DQSN_OE_DDIO_OE:oe,
DQSN_OE_DELAY_CHAIN1:datain,
DQSN_OE_DELAY_CHAIN2:datain,
dqsn_oe_out port.
dqsn_oe_out Output Optional — This port is fed by the output signal from DQSn OE
path. This port can be driven by the
DQSN_OE_DELAY_CHAIN2:dataout,
DQSN_OE_DELAY_CHAIN1:dataout,
DQSN_OE_FF:q,
DQSN_OE_DDIO_OE:dataout,
dqsn_oe_in port.
dqsn_output_data_in Input Optional GND This port feeds the input signal for DQSn output
path. This port is connected to the
DQSN_OUTPUT_FF:d,
DQSN_OUTPUT_DELAY_CHAIN1:datain,
DQSN_OUTPUT_DELAY_CHAIN2:datain,
or dqsn_output_data_out port.
dqsn_output_data_in_hig
h
Input Optional GND This port feeds the full-rate DDR input signal
(rising edge) to the DQSn output path. This port is
connected to the
DQSN_OUTPUT_DDIO_OUT:datainhi port.
dqsn_output_data_in_low Input Optional GND This port feeds the full-rate DDR input signal
(falling edge) to the DQSn output path. This port is
connected to the
DQSN_OUTPUT_DDIO_OUT:datainlo port.
dqsn_output_data_out Output Optional — This port outputs the output signal from the DQSn
output path. This port can be driven by
DQSN_OUTPUT_DELAY_CHAIN2:dataout,
DQSN_OUTPUT_DELAY_CHAIN1:dataout,
DQSN_OUTPUT_FF:q,
DQSN_OUTPUT_DDIO_OUT:dataout, or
dqsn_output_data_in port.
dqsn_sreset Input Optional GND This port is connected to all sreset ports in the
DQSn IO primitives that is used to synchronously
reset the registers in those primitives.
Table 4–18. Megafunction Ports to Configure DQSN IO 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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