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參數(shù)資料
| 型號(hào)： | TMX320C6205GHKA200 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 數(shù)字信號(hào)處理 |
| 英文描述： | FIXED-POINT DIGITAL SIGNAL PROCESSOR |
| 中文描述： | 定點(diǎn)數(shù)字信號(hào)處理器 |
| 文件頁數(shù)： | 61/72頁 |
| 文件大?。?/td> | 1143K |
| 代理商： | TMX320C6205GHKA200 |
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SPRS106G OCTOBER 1999 REVISED JULY 2006
61
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
MULTICHANNEL BUFFERED SERIAL PORT TIMING (CONTINUED)
timing requirements for McBSP as SPI master or slave: CLKSTP = 10b, CLKXP = 1
(see Figure 37)
200
NO.
MASTER
MIN
SLAVE
MIN
UNIT
MAX
MAX
4
tsu(DRV-CKXH)
th(CKXH-DRV)
Setup time, DR valid before CLKX high
12
2 3P
ns
5
Hold time, DR valid after CLKX high
4
5 + 6P
ns
P = 1/CPU clock frequency in ns. For example, when running parts at 200 MHz, use P = 5 ns.
For all SPI slave modes, CLKG is programmed as 1/2 of the CPU clock by setting CLKSM = CLKGDV = 1.
switching characteristics over recommended operating conditions for McBSP as SPI master or
slave: CLKSTP = 10b, CLKXP = 1
(see Figure 37)
200
NO.
PARAMETER
MASTER§
SLAVE
UNIT
MIN
MAX
MIN
MAX
1
th(CKXH-FXL)
td(FXL-CKXL)
td(CKXL-DXV)
Hold time, FSX low after CLKX high
Delay time, FSX low to CLKX low#
T 2
T + 3
ns
2
H 2
H + 3
ns
3
Delay time, CLKX low to DX valid
2
4
3P + 4
5P + 17
ns
6
tdis(CKXH-DXHZ)
Disable time, DX high impedance following last data bit from
CLKX high
H 2
H + 3
ns
7
tdis(FXH-DXHZ)
Disable time, DX high impedance following last data bit from
FSX high
P + 3
3P + 17
ns
8
td(FXL-DXV)
Delay time, FSX low to DX valid
2P + 2
4P + 17
ns
P = 1/CPU clock frequency in ns. For example, when running parts at 200 MHz, use P = 5 ns.
For all SPI slave modes, CLKG is programmed as 1/2 of the CPU clock by setting CLKSM = CLKGDV = 1.
§S =
sample rate generator input clock = P if CLKSM = 1 (P = 1/CPU clock frequency)
=
sample rate generator input clock = P_clks if CLKSM = 0 (P_clks = CLKS period)
T =
CLKX period = (1 + CLKGDV) * S
H =
CLKX high pulse width = (CLKGDV/2 + 1) * S if CLKGDV is even
= (CLKGDV + 1)/2 * S if CLKGDV is odd or zero
L =
CLKX low pulse width
= (CLKGDV/2) * S if CLKGDV is even
= (CLKGDV + 1)/2 * S if CLKGDV is odd or zero
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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