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STE12PS 数据表(PDF) 7 Page - STMicroelectronics |
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STE12PS 数据表(HTML) 7 Page - STMicroelectronics |
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7 / 44 page  Obsolete Product(s) - Obsolete Product(s) STE12PS Pin description 7/44 Configuration signals A_BN_SEL I A or B alternative configuration mode select. ‘0’ →Alternative B (Midspan-PSE) ‘1’ →Alternative A (Endpoint-PSE) CH_NUM x I 12- or 4-boost channel select. x = 0,1. ‘00’ →12 channels configuration ‘01’ →NA ‘10’ →NA ‘11’ → 4-boost channel configuration AUTO_START I AUTO Start Mode enable. ‘0’ →Auto Start Mode disabled: all the ports are disabled after Reset, Neither detection nor power on is performed (MODE[1:0] register selected to Power Down at the reset event) ‘1’ →Auto Start Mode enabled: all the ports are automatically enabled, detection, classification and power are performed (MODE[1:0] register selected to AUTO after the reset event) S/UPIN I SMPS (Switch Mode Power Supply) mode selector bit (supplier / User). When Not connected the device works as DC-DC converter controller. SENSEPROG x I Preset pins for sensing resistor programmability (x=0,1). The programmed value must match the mounted Rsense resistors. ‘00’ →Rsense = 0.5Ω ‘01’ →Rsense = 1Ω ‘10’ →Rsense = 1.5Ω ‘11’ →Rsense = 2Ω Power ON controller signals POWER_EN x I Reserved. (x = 0, …11). I2C Signals I2C_ADDR x I This defines the device address for the I2C interface. x = 0, … 4. SCLIN I Serial clock input pin for the I2C interface. SDAIN I Serial data input pin for the I2C interface. When “jumpered” with the SDAOUT pin, this connection becomes the standard bi-directional serial data line (SDA). SDAOUT O Serial data output pin for the I2C interface. When jumpered with the SDAIN pin, this connection becomes the standard bi-directional serial data line (SDA). INTN O I2C Open drain output that goes low when interrupt event is notified Test mode signals TEST_MODE x I Test Mode Enable (x = 0,1). ‘00’ →Functional mode ‘01’ →Reserved ‘10’ →Reserved ‘11’ →Reserved SCAN_EN I Reserved. Preset to ‘0’. Table 2. Digital pins description (continued) Pin name I/O Function |
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