參數(shù)資料
型號: PT8146
廠商: Princeton Technology Corporation
英文描述: 8-Bit 12-Ch I/O DAC
中文描述: 8位12通道的I / O援
文件頁數(shù): 8/27頁
文件大小: 367K
代理商: PT8146
Tel: 886-2-66296288
EXPANDER STATUS REGISTER (CHANNEL SELECT = “1111”)
Shift register
URL: http://www.princeton.com.tw
Fax: 886-2-29174598
PT8146 V1.1
- 8 -
February, 2006
8-Bit 12-Ch I/O DAC
PT8146
DF
DE
DD
DC
DB
DA
D9
D8
D7
D6
D5
D4
D
11
D
10
D
9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
ESR
This register sets the status of each pin.
Setting
Pin Status
“0”
Input standby status (Hi-Z output)
D11 to D4 pins for analog output should be set to “0”.
Output state
“1”
Note: After power VCCD is turned on, the state of pins and registers is as follows:
Pin
AO1 to AO4
“L” output
D11/AO5 to D4/AO12
Hi-Z state (input state)
D3 to D0
Hi-Z state (input state)
Pin
Shift register
Bits DF to D8 are “0”, and D7 to D0 are not defined (retain prior status)
D/A register
All reset to “0”
Parallel output register
Not defined (retain prior state)
Expander Status Register
(ESR)
ESR settings have priority in determining pin states. Switching between input standby state and
analog output state is enabled even when the ESR value is “1”. When the ESR value returns to “0”, the
pin returns to its previously defined state.
In input standby state with AO set for Hi-Z output, the AO output setting can be used for transitions to
AO output state.
State
State
All reset to “0”
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