参数资料
型号: ADSP-21369BSWZ-2A
厂商: Analog Devices Inc
文件页数: 29/64页
文件大小: 0K
描述: IC DSP 32BIT 333MHZ 208-LQFP
标准包装: 1
系列: SHARC®
类型: 浮点
接口: DAI,DPI
时钟速率: 333MHz
非易失内存: ROM(768 kB)
芯片上RAM: 256kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.20V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 208-LQFP 裸露焊盘
供应商设备封装: 208-LQFP-EP(28x28)
包装: 托盘
Rev. F
|
Page 35 of 64
|
October 2013
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, frame sync (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 28. Serial Ports—External Clock
400 MHz
366 MHz
350 MHz
333 MHz
266 MHz
Parameter
Min
Max
Min
Max
Min
Max
Unit
Timing Requirements
t
SFSE
1
FS Setup Before SCLK
(Externally Generated FS in Either
Transmit or Receive Mode)
2.5
ns
t
HFSE
1
FS Hold After SCLK
(Externally Generated FS in Either
Transmit or Receive Mode)
2.5
ns
t
SDRE
1
Receive Data Setup Before Receive
SCLK
1.9
2.0
2.5
ns
t
HDRE
1
Receive Data Hold After SCLK
2.5
ns
t
SCLKW
SCLK Width
(t
PCLK × 4) ÷ 2 – 0.5
(t
PCLK × 4) ÷ 2 – 0.5
(t
PCLK × 4) ÷ 2 – 0.5
ns
t
SCLK
SCLK Period
t
PCLK × 4
t
PCLK × 4
t
PCLK × 4
ns
Switching Characteristics
t
DFSE
2
FS Delay After SCLK
(Internally Generated FS in Either
Transmit or Receive Mode)
10.25
ns
t
HOFSE
2
FS Hold After SCLK
(Internally Generated FS in Either
Transmit or Receive Mode)
22
2
ns
t
DDTE
2
Transmit Data Delay After Transmit
SCLK
7.8
9.6
9.8
ns
t
HDTE
2
Transmit Data Hold After Transmit
SCLK
22
2
ns
1 Referenced to sample edge.
2 Referenced to drive edge.
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