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DS1864 Datasheet(PDF) 44 Page - Dallas Semiconductor |
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DS1864 Datasheet(HTML) 44 Page - Dallas Semiconductor |
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44 / 72 page  SFP Laser Controller and Diagnostic IC 44 ____________________________________________________________________ Table 01h (Table 00h in DS1859 Configuration), FAh: Warning Masks FACTORY DEFAULT: 00h MEMORY TYPE: Shadowed Memory (SEE) FAh TMPhi TMPlo VCChi VCClo MON1hi MON1lo MON2hi MON2lo bit7 bit0 These bytes configure a maskable interrupt, determining which warning flags assert the MINT bit (Lower Memory, byte 71h, bit 0). If one of the interrupts is desired, its bit must be written to a 1 here. If no interrupt is desired, the bit should be written to a 0. These bit locations do not match the register locations as called out in the SFF-8472, therefore another four byte set is also stored in another location (Table 05h, registers F8h to FBh). The MASK configuration bit (Table 04h (Table 01h in DS1859 configuration), register DAh, bit 0) determines which of these mask sets is used to generate the MINT interrupt. bit7 TMPwrnhimask: Determines if an interrupt is generated for a High Temperature Warning Flag. 0 = No interrupt is generated. 1 = An interrupt is generated. bit6 TMPwrnlomask: Determines if an interrupt is generated for a Low Temperature Warning Flag. 0 = No interrupt is generated. 1 = An interrupt is generated. bit5 VCCwrnhimask: Determines if an interrupt is generated for a High VCC Warning Flag. 0 = No interrupt is generated. 1 = An interrupt is generated. bit4 VCCwrnlomask: Determines if an interrupt is generated for a Low VCC Warning Flag. 0 = No interrupt is generated. 1 = An interrupt is generated. bit3 MON1wrnhimask: Determines if an interrupt is generated for a High MON1 Warning Flag. 0 = No interrupt is generated. 1 = An interrupt is generated. bit2 MONwrnlomask: Determines if an interrupt is generated for a Low MON1 Warning Flag. 0 = No interrupt is generated. 1 = An interrupt is generated. bit1 MON2wrnhimask: Determines if an interrupt is generated for a High MON2 Warning Flag. 0 = No interrupt is generated. 1 = An interrupt is generated. bit0 MON2wrnlomask: Determines if an interrupt is generated for a Low MON2 Warning Flag. 0 = No interrupt is generated. 1 = An interrupt is generated. |
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