參數(shù)資料
型號: ADSP-21362WBBCZ-1A
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號處理
英文描述: SHARC Processor
中文描述: 16-BIT, 55.55 MHz, OTHER DSP, PBGA136
封裝: MO-205AE, BGA-136
文件頁數(shù): 31/52頁
文件大小: 1320K
代理商: ADSP-21362WBBCZ-1A
ADSP-21362/ADSP-21363/ADSP-21364/ADSP-21365/ADSP-21366
Rev. A
|
Page 31 of 52
|
December 2006
Serial Ports
To determine whether communication is possible between two
devices at clock speed n, the following specifications must be
confirmed: 1) frame sync delay and frame sync setup and hold,
2) data delay and data setup and hold, and 3) SCLK width.
Serial port signals (SCLK, FS, data channel A, data channel B)
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.
Table 26. Serial Ports—External Clock
Parameter
Timing Requirements
t
SFSE
1
Min
Max
Unit
FS Setup Before SCLK
(Externally Generated FS in Either Transmit or Receive Mode)
FS Hold After SCLK
(Externally Generated FS in Either Transmit or Receive Mode)
Receive Data Setup Before Receive SCLK
Receive Data Hold After SCLK
SCLK Width
SCLK Period
2.5
ns
t
HFSE
1
2.5
2.5
2.5
12
24
ns
ns
ns
ns
ns
t
SDRE
1
t
HDRE
1
t
SCLKW
t
SCLK
Switching Characteristics
t
DFSE
2
FS Delay After SCLK
(Internally Generated FS in Either Transmit or Receive Mode)
FS Hold After SCLK
(Internally Generated FS in Either Transmit or Receive Mode)
Transmit Data Delay After Transmit SCLK
Transmit Data Hold After Transmit SCLK
9.5
ns
t
HOFSE
2
2
ns
ns
ns
t
DDTE
2
t
HDTE
2
9.5
2
1
Referenced to sample edge.
2
Referenced to drive edge.
Table 27. Serial Ports—Internal Clock
Parameter
Timing Requirements
t
SFSI
1
Min
Max
Unit
FS Setup Before SCLK
(Externally Generated FS in Either Transmit or Receive Mode)
FS Hold After SCLK
(Externally Generated FS in Either Transmit or Receive Mode)
Receive Data Setup Before SCLK
Receive Data Hold After SCLK
7
ns
t
HFSI
1
2.5
7
2.5
ns
ns
ns
t
SDRI
1
t
HDRI
1
Switching Characteristics
t
DFSI
2
t
HOFSI
2
t
DFSIR
2
t
HOFSIR
2
t
DDTI
2
t
HDTI
2
t
SCLKIW
FS Delay After SCLK (Internally Generated FS in Transmit Mode)
FS Hold After SCLK (Internally Generated FS in Transmit Mode)
FS Delay After SCLK (Internally Generated FS in Receive Mode)
FS Hold After SCLK (Internally Generated FS in Receive Mode)
Transmit Data Delay After SCLK
Transmit Data Hold After SCLK
Transmit or Receive SCLK Width
3
ns
ns
ns
ns
ns
ns
ns
–1.0
8
–1.0
3
–1.0
0.5t
SCLK
– 2
0.5t
SCLK
+ 2
1
Referenced to the sample edge.
2
Referenced to drive edge.
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