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參數(shù)資料
| 型號： | UZZ9001 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Sensor Conditioning Electronic(傳感器調(diào)節(jié)芯片) |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封裝： | SO-24 |
| 文件頁數(shù)： | 7/16頁 |
| 文件大?。?/td> | 72K |
| 代理商： | UZZ9001 |
2000 May 19
7
Philips Semiconductors
Preliminary specification
Sensor Conditioning Electronic
UZZ9001
handbook, full pagewidth
DATA
CS
MHB700
sensor byte 2
sensor byte 1
Fig.3 CS Line timing.
Sensor signal coding
Thesensorsignalcomprises14 bits(D13 to D0)asshown
in Fig.4. Bits D12 to D0 are used for the coding of the
angle while D0 is reserved to indicate error and diagnostic
conditionsasdefinedbelow.The14data bitsarearranged
in 2 Bytes. D13 is the MSB of the sensor signal and D0 is
the LSB of the sensor signal. Byte 2, which is sent first,
contains data bits D13 to D7 and additionally the parity bit
P2 which is included for the recognition of interrupted
messages. P2 gives the ODD parity of data bits D13 to D7
and has to be evaluated by the master module.Similarly,
Byte 1 comprises data bits D6 to D0 and parity bit P1,
which gives the ODD parity of data bits D6 to D0. The
internal coding of angle values is as follows:
During normal operation, bit D13 is active low. Each
increment represents an angle value
°
2
13
of:
The error and diagnostic conditions are indicated by
D13 = 1 (active high). In an error situation the last two bits
(D0 and D1) specify the error code (see Table 2). All other
bits (D3 to D12) still show the current measurement value,
but as the last two bits are lost for measurement
representation the resolution is reduced to 11 bit.
Table 2
Error and diagnostic cases coding
00 0000 0000 0000
B
=
0
°
, 180
°
01 1111 1111 1111
B
=
D13
DO
2
13
1
–
(
)
°
2
13
180
179.978
≈
α
inc
180
=
0.022
°
≈
D1
D0
CASE
MEASUREMENT
VALUE
RELIABLE
0
0
no valid value presently
available due to RESET
magnet lost
reserved
reserved
no
0
1
1
1
0
1
no
handbook, full pagewidth
MHB701
P2 D13 D12 D11 D10 D9
D8
D7
P1
D6
D5
D4
D3
sensor byte 2
sensor byte 1
D2
D1
D0
MSB
LSB
Fig.4 Sensor signal coding.
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