Texas Instruments Delfino C28346 DIM168 ControlCARD TMDSCNCD28346-168 TMDSCNCD28346-168 데이터 시트
제품 코드
TMDSCNCD28346-168
Bit 0
Bit(n-1)
(n-2)
(n-3)
(n-4)
Bit 0
Bit(n-1)
(n-2)
(n-3)
(n-4)
CLKX
FSX
DX
DR
M54
M58
M56
M53
M55
M59
M57
LSB
MSB
M60
M61
SPRS516D – MARCH 2009 – REVISED AUGUST 2012
Table 6-56. McBSP as SPI Master or Slave Timing Requirements (CLKSTP = 11b, CLKXP = 1)
MASTER
SLAVE
NO.
UNIT
MIN
MAX
MIN
MAX
M58
t
su(DRV-CKXL)
Setup time, DR valid before CLKX low
30
8P – 10
ns
M59
t
h(CKXL-DRV)
Hold time, DR valid after CLKX low
1
8P – 10
ns
M60
t
su(FXL-CKXL)
Setup time, FSX low before CLKX low
16P + 10
ns
M61
t
c(CKX)
Cycle time, CLKX
2P
(1)
16P
ns
(1)
2P = 1/CLKG
Table 6-57. McBSP as SPI Master or Slave Switching Characteristics (CLKSTP = 11b, CLKXP = 1)
(1)
MASTER
(2)
SLAVE
NO.
PARAMETER
UNIT
MIN
MAX
MIN
MAX
M53
t
h(CKXH-FXL)
Hold time, FSX low after CLKX high
P
ns
M54
t
d(FXL-CKXL)
Delay time, FSX low to CLKX low
2P
(1)
ns
M55
t
d(CLKXH-DXV)
Delay time, CLKX high to DX valid
–2
0
3P + 6
5P + 20
ns
M56
t
dis(CKXH-DXHZ)
Disable time, DX high impedance following last
P + 6
7P + 6
ns
data bit from CLKX high
M57
t
d(FXL-DXV)
Delay time, FSX low to DX valid
6
4P + 6
ns
(1)
2P = 1/CLKG
(2)
C = CLKX low pulse width = P
D = CLKX high pulse width = P
D = CLKX high pulse width = P
For all SPI slave modes, CLKX must be a minimum of 8 CLKG cycles. Also CLKG should be LSPCLK/2
by setting CLKSM = CLKGDV = 1. With maximum LSPCLK speed of 150 MHz, CLKX maximum
frequency is LSPCLK/16 , that is 9.375 MHz and P = 6.67 ns.
by setting CLKSM = CLKGDV = 1. With maximum LSPCLK speed of 150 MHz, CLKX maximum
frequency is LSPCLK/16 , that is 9.375 MHz and P = 6.67 ns.
Figure 6-34. McBSP Timing as SPI Master or Slave: CLKSTP = 11b, CLKXP = 1
Copyright © 2009–2012, Texas Instruments Incorporated
Electrical Specifications
163
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