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): 156/166頁
文件大?。?/td> 1889K
代理商: TMS320F28335_1
www.ti.com
A
(2)
2P = 1/CLKG in ns. CLKG is the output of sample rate generator mux. CLKG =
CLKR as source. CLKSRG
(SYSCLKOUT/2). McBSP performance is limited by I/O buffer switching speed.
Internal clock prescalers must be adjusted such that the McBSP clock (CLKG, CLKX, CLKR) speeds are not greater than the I/O buffer
speed limit (20 MHz).
CLKSRG
CLKGDV)
. CLKSRG can be LSPCLK, CLKX,
(1
6.10.11 Multichannel Buffered Serial Port (McBSP) Timing
TMS320F28335, TMS320F28334, TMS320F28332
Digital Signal Controllers (DSCs)
SPRS439B–JUNE 2007–REVISED OCTOBER 2007
6.10.11.0.1
McBSP Transmit and Receive Timing
Table 6-56. McBSP Timing Requirements
(1)(2)
NO.
MIN
MAX
UNIT
kHz
MHz
ns
ms
ns
ns
ns
ns
ns
McBSP module clock (CLKG, CLKX, CLKR) range
1
20
(3)
McBSP module cycle time (CLKG, CLKX, CLKR)
range
50
1
M11
M12
M13
M14
M15
t
c(CKRX)
t
w(CKRX)
t
r(CKRX)
t
f(CKRX)
t
su(FRH-CKRL)
Cycle time, CLKR/X
Pulse duration, CLKR/X high or CLKR/X low
Rise time, CLKR/X
Fall time, CLKR/X
Setup time, external FSR high before CLKR low
CLKR/X ext
CLKR/X ext
CLKR/X ext
CLKR/X ext
CLKR int
CLKR ext
CLKR int
CLKR ext
CLKR int
CLKR ext
CLKR int
CLKR ext
CLKX int
CLKX ext
CLKX int
CLKX ext
2P
P – 7
7
7
18
2
0
6
18
2
0
6
18
2
0
6
M16
t
h(CKRL-FRH)
Hold time, external FSR high after CLKR low
ns
M17
t
su(DRV-CKRL)
Setup time, DR valid before CLKR low
ns
M18
t
h(CKRL-DRV)
Hold time, DR valid after CLKR low
ns
M19
t
su(FXH-CKXL)
Setup time, external FSX high before CLKX low
ns
M20
t
h(CKXL-FXH)
Hold time, external FSX high after CLKX low
ns
(1)
Polarity bits CLKRP = CLKXP = FSRP = FSXP = 0. If the polarity of any of the signals is inverted, then the timing references of that
signal are also inverted.
(3)
Table 6-57. McBSP Switching Characteristics
(1)(2)
NO.
M1
M2
M3
M4
PARAMETER
MIN
2P
D-5
(3)
C-5
(3)
MAX
UNIT
ns
ns
ns
ns
t
c(CKRX)
t
w(CKRXH)
t
w(CKRXL)
t
d(CKRH-FRV)
Cycle time, CLKR/X
Pulse duration, CLKR/X high
Pulse duration, CLKR/X low
Delay time, CLKR high to internal FSR valid
CLKR/X int
CLKR/X int
CLKR/X int
CLKR int
CLKR ext
CLKX int
CLKX ext
CLKX int
CLKX ext
D+5
(3)
C+5
(3)
0
3
0
3
4
27
M5
t
d(CKXH-FXV)
Delay time, CLKX high to internal FSX valid
4
ns
27
M6
t
dis(CKXH-DXHZ)
Disable time, CLKX high to DX high impedance
following last data bit
8
ns
14
(1)
Polarity bits CLKRP = CLKXP = FSRP = FSXP = 0. If the polarity of any of the signals is inverted, then the timing references of that
signal are also inverted.
2P = 1/CLKG in ns.
C=CLKRX low pulse width = P
D=CLKRX high pulse width = P
(2)
(3)
Electrical Specifications
156
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