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參數資料
| 型號： | TSC2008TRGVRQ1 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC16 |
| 封裝： | 4 X 4 MM, PLASTIC, VQFN-16 |
| 文件頁數： | 24/35頁 |
| 文件大小： | 418K |
| 代理商： | TSC2008TRGVRQ1 |
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1
SCLK
CS
8
1
S
0
X
1
SDI
ControlBits
S
ControlBits
8
t
D(RESET)
t
SU(SCLKF-CSR)
t
SU(CSF-SCLK1R)
A2 A1 A0 MODE
SER/
DFR
PD1 PD0
0
1
0
1
SPILockup
24-BitSureSetSequence
CS
SCLK
SDI
1
0
1
Reset NormalOperation
SBAS552
– JUNE 2011
RESET
The TSC2008-Q1 can be reset with three different methods: power-on reset (POR), software reset, and the
proprietary SureSet function. The configuration bits (see Table 3, bit[3:1]) accessible through the setup command
('010') are reset to the respective default values listed in Table 3 after any reset occurs (POR, software reset, or
SureSet).
Software Reset
The TSC2008-Q1 has a software reset command that can be issued by submitting the 8-bit command '1010
0001' via the SPI, as shown in Figure 36. This command resets the device to the default configuration. All the
Figure 36. Software Reset Timing
Table 8. Timing Requirements for Figure 36
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
1.2V
≤ VDD < 1.6V
22
ns
tSU(CSF-SCLK1R)
Enable lead time
1.6
≤ VDD < 3.6V
14
ns
1.2V
≤ VDD < 1.6V
50
ns
tSU(SCLKF-CSR)
Enable lag time
1.6
≤ VDD < 3.6V
20
ns
tD(RESET)
Reset period requirement
200
ns
SureSet
The TSC2008-Q1 uses SureSet, a unique reset function. SureSet works in the same way as a hardware reset
except that it does not require a dedicated reset pin on the device. SureSet works independently from the
software reset and power-on reset. For example, the software reset works only after the interface (internal state
machine) is fully functional, whereas SureSet works without the interface. In the unlikely event that the host
becomes out-of-sync with the TSC2008-Q1, and forcing CS high does not reset the state machine, the host can
submit a 24-bit sequence (0x06D926) that resets the device to a default state (the same as the power-up state),
as shown in Figure 37. In order to reset the TSC2008-Q1, the device must be selected (CS low) before
submitting this sequence.
Figure 37. SureSet Timing
30
Copyright
2011, Texas Instruments Incorporated
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