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STV2050A bảng dữ liệu(PDF) 58 Page - STMicroelectronics

tên linh kiện STV2050A
Giải thích chi tiết về linh kiện  AUTOMATIC MULTISCAN DIGITAL CONVERGENCE PROCESSOR
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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STV2050A bảng dữ liệu(HTML) 58 Page - STMicroelectronics

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STV2050A - ELECTRICAL LOOP
11.5.2 OGAH and OGAV Pins
The OGAH (pin 57) and OGAV (pin 58) pins are multi-level output pins. In addition to the
normal digital output function (logical “0” and “1”), they can drive a very stable current and can
be switched to high impedance. The stable current and the high impedance can be used to
generate the reference voltage across a grounded resistor for the gain and offset detection
comparators.
Each pad is controlled by two corresponding bits in the E4 register.
Figure 32. E4 Register
Attention: The OGAV and OGAH pins cannot both drive IREF at the same time.
GAH[1:0]
0 0 = High impedance
0 1 = “0”
1 0 = Iref
1 1 = “1”
GAV[1:0]
0 0 = High impedance
0 1 = “0”
1 0 = Iref
1 1 = “1”
OGAH
OGAV
2
GAV
control bit 1
GAV
control bit 2
GAH
control bit 1
GAH
control bit 2



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