參數(shù)資料
型號(hào): AD14060LBF-4
廠商: Analog Devices Inc
文件頁數(shù): 5/48頁
文件大小: 0K
描述: IC DSP CMOS 32BIT 308CQFP
產(chǎn)品培訓(xùn)模塊: SHARC Processor Overview
標(biāo)準(zhǔn)包裝: 1
系列: SHARC®
類型: 浮點(diǎn)
接口: 主機(jī)接口,連接端口,串行端口
時(shí)鐘速率: 40MHz
非易失內(nèi)存: 外部
芯片上RAM: 2MB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 3.30V
工作溫度: -40°C ~ 100°C
安裝類型: 表面貼裝
封裝/外殼: 308-CBQFP
供應(yīng)商設(shè)備封裝: 308-CQFP(52x52)
包裝: 托盤
AD14060/AD14060L
Rev. B | Page 13 of 48
MULTIPROCESSOR BUS REQUEST AND HOST BUS REQUEST
Use these specifications for passing of the bus mastership among multiprocessing ADSP-2106xs (BRx) or a host processor (HBR, HBG).
Table 12. Specifications
5 V
3.3 V
Parameter
Min
Max
Min
Max
Unit
Timing Requirements:
tHBGRCSV
HBG Low to RD/WR/CS Valid1
19.5 + 5 DT/4
ns
tSHBRI
HBR Setup before CLKIN2
20 + 3 DT/4
ns
tHHBRI
HBR Hold before CLKIN2
13.5 + 3 DT/4
ns
tSHBGI
HBG Setup before CLKIN
13 + DT/2
ns
tHHBGI
HBG Hold before CLKIN High
5.5 + DT/2
ns
tSBRI
BRx, CPA Setup before CLKIN3
13 + DT/2
ns
tHBRI
BRx, CPA Hold before CLKIN High
5.5 + DT/2
ns
tSRPBAI
RPBA Setup before CLKIN
21 + 3 DT/4
ns
tHRPBAI
RPBA Hold before CLKIN
11.5 + 3 DT/4
ns
Switching Characteristics:
tDHBGO
HBG Delay after CLKIN
8 DT/8
ns
tHHBGO
HBG Hold after CLKIN
2 DT/8
ns
tDBRO
BRx Delay after CLKIN
8 DT/8
ns
tHBRO
BRx Hold after CLKIN
2 DT/8
ns
tDCPAO
CPA Low Delay after CLKIN
9 DT/8
9.5 DT/8
ns
tTRCPA
CPA Disable after CLKIN
–2 DT/8
+5.5 DT/8
2 DT/8
+5.5 DT/8
ns
tDRDYCS
REDY (O/D) or (A/D) Low from CS and HBR Low4
9.5
12
ns
tTRDYHG
REDY (O/D) Disable or REDY (A/D) High from HBG4
40 + 27 DT/16
ns
tARDYTR
REDY (A/D) Disable from CS or HBR High4
11
ns
1 For first asynchronous access after HBR and CS asserted, ADDR31–0 must be a non-MMS value 1/2 tCK before RD or WR goes low, or by tHBGRCSV after HBG goes low. This is
easily accomplished by driving an upper address signal high when HBG is asserted.
2 Required only for recognition in the current cycle.
3 CPA assertion must meet the setup to CLKIN; de-assertion does not need to meet the setup to CLKIN.
4 (O/D) = open drain; (A/D) = active drive.
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