参数资料
型号: TMS320VC5409ZGU100
厂商: Texas Instruments
文件页数: 72/93页
文件大小: 0K
描述: IC FIXED POINT DSP 144-BGA
标准包装: 160
系列: TMS320C54x
类型: 定点
接口: 主机接口,McBSP
时钟速率: 100MHz
非易失内存: ROM(32 kB)
芯片上RAM: 64kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.80V
工作温度: -40°C ~ 100°C
安装类型: 表面贴装
封装/外壳: 144-LFBGA
供应商设备封装: 144-BGA MICROSTAR(12x12)
包装: 托盘
配用: 296-15829-ND - DSP STARTER KIT FOR TMS320C5416
Documentation Support
74
April 1999 Revised October 2008
SPRS082F
5.13.3
McBSP as SPI Master or Slave Timing
Table 523 to Table 530 assume testing over recommended operating conditions and H = 0.5tc(CO) (see
Figure 523, Figure 524, Figure 525, and Figure 526).
Table 523. McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 10b, CLKXP = 0)
MASTER
SLAVE
UNIT
MIN
MAX
MIN
MAX
UNIT
tsu(BDRV-BCKXL)
Setup time, BDR valid before BCLKX low
10
12H
ns
th(BCKXL-BDRV)
Hold time, BDR valid after BCLKX low
0
5 + 12H
ns
tsu(BFXL-BCKXH)
Setup time, BFSX low before BCLKX high
10
ns
tc(BCKX)
Cycle time, BCLKX
12H
32H
ns
For all SPI slave modes, CLKG is programmed as 1/2 of the CPU clock by setting CLKSM = CLKGDV = 1.
Table 524. McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 10b, CLKXP = 0)
PARAMETER
MASTER
SLAVE
UNIT
PARAMETER
MIN
MAX
MIN
MAX
UNIT
th(BCKXL-BFXL)
Hold time, BFSX low after BCLKX low§
T 4
T + 4
ns
td(BFXL-BCKXH)
Delay time, BFSX low to BCLKX high
C 5
C + 3
ns
td(BCKXH-BDXV)
Delay time, BCLKX high to BDX valid
3
7
6H + 5
10H + 14
ns
tdis(BCKXL-BDXHZ)
Disable time, BDX high impedance following last data bit from
BCLKX low
C 2
C + 3
ns
tdis(BFXH-BDXHZ)
Disable time, BDX high impedance following last data bit from
BFSX high
2H+ 3
6H + 17
ns
td(BFXL-BDXV)
Delay time, BFSX low to BDX valid
4H + 2
8H + 17
ns
For all SPI slave modes, CLKG is programmed as 1/2 of the CPU clock by setting CLKSM = CLKGDV = 1.
T = BCLKX period = (1 + CLKGDV) * 2H
C =
BCLKX low pulse width = T/2 when CLKGDV is odd or zero and = (CLKGDV/2) * 2H when CLKGDV is even
§ FSRP = FSXP = 1. As a SPI master, BFSX is inverted to provide active-low slave-enable output. As a slave, the active-low signal input on BFSX
and BFSR is inverted before being used internally.
CLKXM = FSXM = 1, CLKRM = FSRM = 0 for master McBSP
CLKXM = CLKRM = FSXM = FSRM = 0 for slave McBSP
BFSX 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
(BCLKX).
Bit 0
Bit(n-1)
(n-2)
(n-3)
(n-4)
Bit 0
Bit(n-1)
(n-2)
(n-3)
(n-4)
BCLKX
BFSX
BDX
BDR
tsu(BDRV-BCLXL)
td(BCKXH-BDXV)
th(BCKXL-BDRV)
tdis(BFXH-BDXHZ)
tdis(BCKXL-BDXHZ)
th(BCKXL-BFXL)
td(BFXL-BDXV)
td(BFXL-BCKXH)
LSB
MSB
tsu(BFXL-BCKXH)
tc(BCKX)
Figure 523. McBSP Timing as SPI Master or Slave: CLKSTP = 10b, CLKXP = 0
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