PD6710/’22 — ISA-to-PC-Card (PCMCIA) Controllers
out
mov
mov
out
dx,
al,
ah,
dx,
ax
Index_Reg
user_data
ax
;Desired data to be
;written to
;extended index 03h
;Read from Extension Control 1 register example
;Code section
mov
mov
mov
out
mov
out
inc
in
dx,
al,
ah,
dx,
al,
dx,
dx
al,
PD67XX_Index
Extended_Index
Ext_Cntrl_1
ax
Index_Reg
al
;al has extended
dx
;index 03h data
4.3
Power-On Setup
Following reset, the PD67XX must be configured by host software. The host software’s setup
procedure is different depending on its PC system configuration, in particular, the power supply
arrangement.
The application of the RESET signal (see
on power-up causes initialization of
all the PD67XX register bits and fields to their reset values. Not all registers have reset values; only
registers with bits and fields specified to have reset values are initialized.
One bit, which is loaded on hardware reset from the SPKR_OUT*/C_SEL pin (see
is used to determine the socket to which the PD67XX will respond.
38
Datasheet
INTEL [ INTEL CORPORATION ]
