Asynchronous Read/Write—Host to ADSP-21160N Use these specifications (Table 15, Table 16, Figure 18, and Figure 19) for" />
參數(shù)資料
型號: ADSP-21160NCB-100
廠商: Analog Devices Inc
文件頁數(shù): 21/48頁
文件大?。?/td> 0K
描述: IC DSP CONTROLLER 32BIT 400BGA
產品培訓模塊: SHARC Processor Overview
標準包裝: 1
系列: SHARC®
類型: 浮點
接口: 主機接口,連接端口,串行端口
時鐘速率: 100MHz
非易失內存: 外部
芯片上RAM: 512kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.90V
工作溫度: -40°C ~ 100°C
安裝類型: 表面貼裝
封裝/外殼: 400-BBGA
供應商設備封裝: 400-PBGA(27x27)
包裝: 托盤
ADSP-21160N
–28–
REV. 0
Asynchronous Read/Write—Host to ADSP-21160N
Use these specifications (Table 15, Table 16, Figure 18, and
Figure 19) for asynchronous host processor accesses of an
ADSP-21160N, after the host has asserted
CS and HBR (low).
After
HBG is returned by the ADSP-21160N, the host can drive
the
RDx and WRx pins to access the ADSP-21160N’s internal
memory or IOP registers.
HBR and HBG are assumed low for
this timing.
Table 15. Read Cycle
Parameter
Min
Max
Unit
Timing Requirements
tSADRDL
Address Setup/
CS Low Before RDx Low
0
ns
tHADRDH
Address Hold/
CS Hold Low After RDx
2ns
tWRWH
RDx/WRx High Width
5ns
tDRDHRDY
RDx High Delay After REDY (O/D) Disable
0
ns
tDRDHRDY
RDx High Delay After REDY (A/D) Disable
0
ns
Switching Characteristics
tSDATRDY
Data Valid Before REDY Disable from Low
2
ns
tDRDYRDL
REDY (O/D) or (A/D) Low Delay After
RDx Low
11
ns
tRDYPRD
REDY (O/D) or (A/D) Low Pulsewidth for Read
tCK – 4
ns
tHDARWH
Data Disable After
RDx High
1.5
6
ns
Table 16. Write Cycle
Parameter
Min
Max
Unit
Timing Requirements
tSCSWRL
CS Low Setup Before WRx Low
0
ns
tHCSWRH
CS Low Hold After WRx High
0
ns
tSADWRH
Address Setup Before
WRx High
6
ns
tHADWRH
Address Hold After
WRx High
2
ns
tWWRL
WRx Low Width
tCCLK+1
ns
tWRWH
RDx/WRx High Width
5
ns
tDWRHRDY
WRx High Delay After REDY (O/D) or (A/D) Disable
0
ns
tSDATWH
Data Setup Before
WRx High
5
ns
tHDATWH
Data Hold After
WRx High
4
ns
Switching Characteristics
tDRDYWRL
REDY (O/D) or (A/D) Low Delay After
WRx/CS Low
11
ns
tRDYPWR
REDY (O/D) or (A/D) Low Pulsewidth for Write
5.75 + 0.5tCCLK
ns
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