Pcmcia Interface Enable Register (Per) - Freescale Semiconductor MPC850 User Manual

Programming Model
Table 16-9. PSCR Field Descriptions (Continued)
Bits Name
18 CBWP_C
19 CBCD2_C
20 CBCD1_C
21 CBBVD2_C
22 CBBVD1_C
23 —
24 CBRDY_L
25 CBRDY_H
26 CBRDY_R
27 CBRDY_F
28–31 —

16.4.3 PCMCIA Interface Enable Register (PER)

Setting a bit in the PER, shown in Figure 16-5, enables the corresponding interrupt.
Bit 0 1 2
Field
Rese
t
R/W
Addr
Bit 16 17 18
Field CB EV CB EV CB
_ _ _
S1 S2 P
Rese
t
R/W
Addr
Figure 16-5. PCMCIA Interface Enable Register (PER)
Table 16-10 describes PER fields.
Bits Name
0–15 — Reserved, should be 0.
16 CB_EVS1 Enable for voltage sense 1 for card B changed. Setting this bit enables the interrupt on any
signal change.
Write Protect for card B changed
Card detect 2 for card B changed
Card detect 1 for card B changed
Battery voltage/SPKR_B input for card B changed
Battery voltage/STSCHG_B input for card B changed
Reserved, should be cleared.
RDY/IRQ of card B pin is low. Device and socket interrupt.
RDY/IRQ of card B pin is high. Device and socket interrupt.
RDY/IRQ of card B pin rising edge detected. Device and socket interrupt.
RDY/IRQ of card B pin falling edge detected. Device and socket interrupt.
Reserved, should be cleared.
3 4 5
0000_0000_0000_0000
(IMMR & 0xFFFF0000) + 0x0F8
19 20 21
EW CB EC CB EC CB
_ _ _
D2 D1 D2
0000_0000_0000_0000
(IMMR & 0xFFFF0000) + 0x0FA
Table 16-10. PER Field Descriptions
MPC850 Family User's Manual
Description
6 7 8
—
R/W
22 2 24
3
EBV CB EBV — CB ERDY
_ _
D1 L
_
R/W
Description
9 10 11
25 26 27
CB ERDY CB ERDY CB ERDY
_ _ _ _ _
H R
_
12-15
28-31
—
F