參數(shù)資料
型號： TMX320VC5509AGHH
廠商： Texas Instruments, Inc.
元件分類： 數(shù)字信號處理
英文描述： TMS320VC5509A Fixed-Point Digital Signal Processor
中文描述： TMS320VC5509A定點數(shù)字信號處理器
文件頁數(shù)： 122/144頁
文件大?。?/td> 1603K
代理商： TMX320VC5509AGHH
Electrical Specifications
122
November 2002 Revised January 2005
SPRS205D
Table 533. McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 11b, CLKXP = 1)
NO.
CV
DD
= 1.2 V
CV
DD
= 1.35 V
MASTER
MIN
MAX
CV
DD
= 1.6 V
UNIT
SLAVE
MIN
MASTER
MIN
SLAVE
MIN
MAX
MAX
MAX
MC23
t
su(DRV-CKXL)
Setup time, DR valid before CLKX
low
15
3 6P
10
3 6P
ns
MC24
t
h(CKXL-DRV)
Hold time, DR valid after CLKX
low
0
3 + 6P
0
3 + 6P
ns
MC36
t
su(FXL-CKXL)
Setup time, FSX low before CLKX
low
5
5
ns
MC26
t
c(CKX)
Cycle time, CLKX
2P
16P
2P
16P
ns
For all SPI slave modes, CLKG is programmed as 1/2 of the CPU clock by setting CLKSM = CLKGDV = 1.
P = 1/CPU clock frequency. For example, when running parts at 200 MHz, use P = 5 ns. In addition to CPU frequency, the maximum operating
frequency of the serial port also depends on meeting the rest of the switching characteristics and timing requirements parameters specified.
Table 534. McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 11b, CLKXP = 1)
NO.
PARAMETER
CV
DD
= 1.2 V
CV
DD
= 1.35 V
CV
DD
= 1.6 V
UNIT
MASTER
§
MIN
SLAVE
MIN
MASTER
§
MIN
SLAVE
MIN
MAX
MAX
MAX
MAX
MC37
t
d(CKXH-FXL)
Delay time, CLKX high
to FSX low
D 5
D + 5
D 4
D + 4
ns
MC38
t
d(FXL-CKXL)
Delay time, FSX low to
CLKX low
#
T 5
T + 5
T 4
T + 4
ns
MC29
t
d(CKXH-DXV)
Delay time, CLKX high
to DX valid
4
6
3P + 3
5P + 15
3
3
3P + 3
5P + 8
ns
MC39
t
dis(CKXH-DXHZ)
Disable time, DX high-
impedance
last data bit from CLKX
high
following
4
4
3P + 4
3P + 19
3
1
3P + 3
3P + 12
ns
MC32
t
d(FXL-DXV)
Delay time, FSX low to
DX valid
C 4
C + 4
3P + 4
3P + 18
C 3
C + 3
3P + 4
3P + 10
ns
For all SPI slave modes, CLKG is programmed as 1/2 of the CPU clock by setting CLKSM = CLKGDV = 1.
P = 1/CPU clock frequency. For example, when running parts at 200 MHz, use P = 5 ns. In addition to CPU frequency, the maximum operating
frequency of the serial port also depends on meeting the rest of the switching characteristics and timing requirements parameters specified.
§
T =
CLKX period = (1 + CLKGDV) * P
C =
CLKX low pulse width = T/2 when CLKGDV is odd or zero and = (CLKGDV/2) * P when CLKGDV is even
D =
CLKX high pulse width = T/2 when CLKGDV is odd or zero and = (CLKGDV/2 + 1) * P when CLKGDV is even
FSRP = FSXP = 1. As a SPI master, FSX is inverted to provide active-low slave-enable output. As a slave, the active-low signal input on FSX
and FSR is inverted before being used internally.
CLKXM = FSXM = 1, CLKRM = FSRM = 0 for master McBSP
CLKXM = CLKRM = FSXM = FSRM = 0 for slave McBSP
#
FSX should be low before the rising edge of clock to enable slave devices and then begin a SPI transfer at the rising edge of the master clock
(CLKX).
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