Microchip Technology DM240015 Data Sheet
2012-2013 Microchip Technology Inc.
DS30009312B-page 311
PIC24FJ128GC010 FAMILY
REGISTER 21-7:
PMCSxMD: EPMP CHIP SELECT x MODE REGISTER
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
U-0
U-0
U-0
ACKM1
ACKM0
AMWAIT2
AMWAIT1
AMWAIT0
—
—
—
bit 15
bit 8
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
DWAITB1
DWAITB0
DWAITM3
DWAITM2
DWAITM1
DWAITM0
DWAITE1
DWAITE0
bit 7
bit 0
Legend:
R = Readable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-14
ACKM<1:0>:
Chip Select x Acknowledge Mode bits
11
= Reserved
10
= PMACKx is used to determine when a read/write operation is complete
01
= PMACKx is used to determine when a read/write operation is complete with time-out (if
DWAITM<3:0> = 0000, the maximum time-out is 255 T
CY
or else it is DWAITM<3:0> cycles)
00
= PMACKx is not used
bit 13-11
AMWAIT<2:0>:
Chip Select x Alternate Master Wait States bits
111
= Wait of 10 alternate master cycles
. . .
001
001
= Wait of 4 alternate master cycles
000
= Wait of 3 alternate master cycles
bit 10-8
Unimplemented:
Read as ‘0’
bit 7-6
DWAITB<1:0>:
Chip Select x Data Setup Before Read/Write Strobe Wait States bits
11
= Wait of 3¼ T
CY
10
= Wait of 2¼ T
CY
01
= Wait of 1¼ T
CY
00
= Wait of ¼ T
CY
bit 5-2
DWAITM<3:0>:
Chip Select x Data Read/Write Strobe Wait States bits
For Write Operations:
1111
1111
= Wait of 15½ T
CY
. . .
0001
0001
= Wait of 1½ T
CY
0000
= Wait of ½ T
CY
For Read Operations:
1111
1111
= Wait of 15¾ T
CY
. . .
0001
0001
= Wait of 1¾ T
CY
0000
= Wait of ¾ T
CY
bit 1-0
DWAITE<1:0>:
Chip Select x Data Hold After Read/Write Strobe Wait States bits
For Write Operations:
11
11
= Wait of 3¼ T
CY
10
= Wait of 2¼ T
CY
01
= Wait of 1¼ T
CY
00
= Wait of ¼ T
CY
For Read Operations:
11
11
= Wait of 3 T
CY
10
= Wait of 2 T
CY
01
= Wait of 1 T
CY
00
= Wait of 0 T
CY