W83627HF Datasheet, PDF (155/185 Pages) Winbond – WINBOND I/O

W83627HF/F
PRELIMINARY
CR23 (Default 0x00)
Bit 7 - 1: Reserved.
Bit 0: IPD (Immediate Power Down). When set to 1, it will put the whole chip into power down
mode immediately.
CR24 (Default 0b1s000s0s)
Bit 7: EN16SA
= 0 12 bit Address Qualification
= 1 16 bit Address Qualification
Bit 6: CLKSEL
= 0 The clock input on Pin 1 should be 24 Mhz.
= 1 The clock input on Pin 1 should be 48 Mhz.
The corresponding power-on setting pin is SOUTB (pin 83).
Bit 5 - 3: Reserved.
Bit 2: ENKBC
= 0 KBC is disabled after hardware reset.
= 1 KBC is enabled after hardware reset.
This bit is read only, and set/reset by power-on setting pin. The corresponding power-on
setting pin is SOUTA (pin 54).
Bit 1: Reserved
Bit 0: PNPCSV
= 0 The Compatible PnP address select registers have default values.
= 1 The Compatible PnP address select registers have no default value.
When trying to make a change to this bit, new value of PNPCVS must be complementary to
the old one to make an effective change. For example, the user must set PNPCVS to 0 first
and then reset it to 1 to reset these PnP registers if the present value of PNPCVS is 1. The
corresponding power-on setting pin is NDTRA (pin 52).
CR25 (Default 0x00)
Bit 7 - 6: Reserved
Bit 5: URBTRI
Bit 4: URATRI
Bit 3: PRTTRI
Bit 2 - 1 : Reserved
Bit 0: FDCTRI.
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Publication Release Date: Jul 1999
Revision 0.53