參數(shù)資料
型號： TMS320F28335_1
廠商： Texas Instruments, Inc.
英文描述： Variable Capacitance Diode for TV Tuner VHF Tuning; Ratings VR (V): 32; Characteristics n: 12.0 min; Characteristics rs (ohm) max: 0.85; Characteristics C (pF) max: C2 = 32.2 to 37.5 C25 = 2.57 to 3.0; Characteristics CVR/CVR: 2/25; Cl: 2.777; Package: UFP
中文描述： 數(shù)字信號控制器（DSC）
文件頁數(shù)： 136/166頁
文件大小： 1889K
代理商： TMS320F28335_1
www.ti.com
A
TMS320F28335, TMS320F28334, TMS320F28332
Digital Signal Controllers (DSCs)
SPRS439B–JUNE 2007–REVISED OCTOBER 2007
Table 6-37. Relationship Between Parameters Configured in XTIMING and Duration of Pulse (continued)
DESCRIPTION
Lead period, write access
Active period, write access
Trail period, write access
DURATION (ns)
(1)(2)
LW
AW
TW
XWRLEAD
×
t
c(XTIM)
(XWRACTIVE + WS + 1)
×
t
c(XTIM)
XWRTRAIL
×
t
c(XTIM)
(XWRLEAD
×
2)
×
t
c(XTIM)
(XWRACTIVE
×
2 + WS + 1)
×
t
c(XTIM)
(XWRTRAIL
×
2)
×
t
c(XTIM)
Minimum wait state requirements must be met when configuring each zone’s XTIMING register. These
requirements are in addition to any timing requirements as specified by that device’s data sheet. No
internal device hardware is included to detect illegal settings.
6.10.7.1
USEREADY = 0
If the XREADY signal is ignored (USEREADY = 0), then:
Lead:
LR
≥
t
c(XTIM)
LW
≥
t
c(XTIM)
These requirements result in the following XTIMING register configuration restrictions:
XRDLEAD
≥
1
XRDACTIVE
≥
0
XRDTRAIL
≥
0
XWRLEAD
≥
1
XWRACTIVE
≥
0
XWRTRAIL
≥
0
X2TIMING
0, 1
Examples of valid and invalid timing when not sampling XREADY:
XRDLEAD
0
1
XRDACTIVE
0
0
XRDTRAIL
0
0
XWRLEAD
0
1
XWRACTIVE
0
0
XWRTRAIL
0
0
X2TIMING
0, 1
0, 1
Invalid
(1)
Valid
(1)
6.10.7.2
No hardware to detect illegal XTIMING configurations
Synchronous Mode (USEREADY = 1, READYMODE = 0)
If the XREADY signal is sampled in the synchronous mode (USEREADY = 1, READYMODE = 0), then:
1
Lead:
LR
≥ ×
t
c(XTIM)
LW
≥
t
c(XTIM)
AR
≥
2
×
t
c(XTIM)
AW
≥
2
×
t
c(XTIM)
2
Active:
NOTE
Restriction does not include external hardware wait states.
These requirements result in the following XTIMING register configuration restrictions:
XRDLEAD
≥
1
XRDACTIVE
≥
1
XRDTRAIL
≥
0
XWRLEAD
≥
1
XWRACTIVE
≥
1
XWRTRAIL
≥
0
X2TIMING
0, 1
Examples of valid and invalid timing when using synchronous XREADY:
XRDLEAD
0
1
1
XRDACTIVE
0
0
1
XRDTRAIL
0
0
0
XWRLEAD
0
1
1
XWRACTIVE
0
0
1
XWRTRAIL
0
0
0
X2TIMING
0, 1
0, 1
0, 1
Invalid
(1)
Invalid
(1)
Valid
(1)
No hardware to detect illegal XTIMING configurations
Electrical Specifications
136
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TMS320F28335PGFA 制造商:Texas Instruments 功能描述:IC DSC 32BIT 512KB 150MHZ 1.995V LQFP176
TMS320F28335PTPQ 功能描述:數(shù)字信號處理器和控制器 - DSP, DSC Delfino Micrcntrlr RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT
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