RM0082
RS_SDIO controller
Doc ID 018672 Rev 1
727/844
32.7.25 CAP2
register
The CAP2 bit assignments are given in
32.7.26 MAXCURR1
register
The MAXCURR1 bit assignments are given in
[13:08]
BCLKFREQ
6’h30
Hwinit
This value indicates the base (maximum) clock
frequency for the SD clock. Unit values are 1 MHz.
If the real frequency is 16.5 MHz, the larger value
shall be set 0x11 (17 MHz) because the HD uses
this value to calculate the clock divider value and it
shall not exceed the upper limit of the SD clock
frequency. The supported range is 10 MHz to 63
MHz. If these bits are all 0, the Host System has to
get information via another method.
Not 0 - 1 MHz to 63 MHz
0x00 - Get information via another method.
[07]
TOCLKU
1’h1
Hwinit
This bit shows the unit of base clock frequency
used to detect Data Timeout Error.
1’b0 - kHz
1’b1 - MHz
[06]
-
-
Rsvd
Reserved
[05:00]
TOCLKFREQ
6’h30
Hwinit
This bit shows the base clock frequency used to
detect Data Timeout Error.
Not 0 - 1 kHz to 63 kHz or
1 MHz to 63 MHz
0x00- Get Information via another method.
Table 647.
CAP1 register bit assignments (continued)
Bit
Name
Reset
value
Type
Description
Table 648.
CAP2 register bit assignments
Bit
Name
Reset
value
Type
Description
[31:00]
-
-
Rsvd
Reserved
Table 649.
MAXCURR1 register bit assignments
Bit
Name
Reset
value
Type
Description
[31:24]
-
-
Rsvd
Reserved
[23:16]
MAX18CURR 8’h00
Hwinit
Maximum current for 1.8V card. (See
)
[15:08]
MAX30CURR 8’h00
Hwinit
Maximum current for 3.0V card. (See
)
[07:00]
MAX33CURR 8’h01
Hwinit
Maximum current for 3.3V card. (See
)