ADSP-21362/ADSP-21363/ADSP-21364/ADSP-21365/ADSP-21366
Serial Ports
To determine whether communication is possible between two
devices at clock speed n, the following specifications must be
confirmed: 1) frame sync (FS) delay and frame sync setup and
hold, 2) data delay and data setup and hold, and 3) serial clock
(SCLK) width.
Table 24. Serial Ports—External Clock
Serial port signals are routed to the DAI_P20–1 pins using the
SRU. Therefore, the timing specifications provided below are
valid at the DAI_P20–1 pins.
K and B Grade
Y Grade
Parameter
Min
Max
Max
Unit
Timing Requirements
t SFSE 1
Frame Sync Setup Before SCLK
t HFSE
1
(Externally Generated Frame Sync in Either Transmit or Receive Mode)
Frame Sync Hold After SCLK
(Externally Generated Frame Sync in Either Transmit or Receive Mode)
2.5
2.5
ns
ns
t SDRE
1
t HDRE 1
t SCLKW
t SCLK
Receive Data Setup Before Receive SCLK
Receive Data Hold After SCLK
SCLK Width
SCLK Period
2.5
2.5
(t PCLK × 4) ÷ 2 – 2
t PCLK × 4
ns
ns
ns
ns
Switching Characteristics
t DFSE 2
Frame Sync Delay After SCLK
t HOFSE 2
(Internally Generated Frame Sync in Either Transmit or Receive Mode)
Frame Sync Hold After SCLK
(Internally Generated Frame Sync in Either Transmit or Receive Mode)
2
9.5
11
ns
ns
t DDTE 2
Transmit Data Delay After Transmit SCLK
9.5
11
ns
t HDTE
2
Transmit Data Hold After Transmit SCLK
2
ns
1
2
Referenced to sample edge.
Referenced to drive edge.
Table 25. Serial Ports—Internal Clock
K and B Grade
Y Grade
Parameter
Min
Max
Max
Unit
Timing Requirements
t SFSI 1
Frame Sync Setup Before SCLK
t HFSI 1
(Externally Generated Frame Sync in Either Transmit or Receive Mode)
Frame Sync Hold After SCLK
(Externally Generated Frame Sync in Either Transmit or Receive Mode)
7
2.5
ns
ns
t SDRI 1
t HDRI 1
Receive Data Setup Before SCLK
Receive Data Hold After SCLK
7
2.5
ns
ns
Switching Characteristics
t DFSI 2
t HOFSI 2
Frame Sync Delay After SCLK (Internally Generated Frame Sync in Transmit Mode)
Frame Sync Hold After SCLK (Internally Generated Frame Sync in Transmit Mode)
–1.0
3
3.5
ns
ns
t DFSIR
2
Frame Sync Delay After SCLK (Internally Generated Frame Sync in Receive Mode)
8 9.5 ns
t HOFSIR 2
t DDTI 2
Frame Sync Hold After SCLK (Internally Generated Frame Sync in Receive Mode)
Transmit Data Delay After SCLK
–1.0 ns
3 4.0 ns
t HDTI
2
Transmit Data Hold After SCLK
–1.0 ns
t SCLKIW
Transmit or Receive SCLK Width
2 × t PCLK – 2 2 × t PCLK + 2 2 × t PCLK + 2 ns
1
2
Referenced to the sample edge.
Referenced to drive edge.
Rev. J |
Page 29 of 60 |
July 2013
相关PDF资料
ADZS-21371-EZLITE KIT EVAL EZLITE ADZS-21371
ADZS-21469-EZLITE KIT EVAL EZ LITE ADSP-21469
ADZS-21479-EZLITE KIT EVAL EZ BOARD ADSP-2147X
ADZS-21489-EZLITE KIT EVAL EZ BOARD ADSP-2148X
ADZS-218X-ICE-2.5V EMULATOR SRL FOR ADDS-218X-ICE
ADZS-BF506F-EZLITE KIT EVAL EZLITE ADSP-BF506F
ADZS-BF518F-EZLITE KIT EZ LITE BF512F/14F/16F/18F
ADZS-BF527-EZLITE BOARD EVAL ADSP-BF527
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