Information

Enhanced Secure Digital Host Controller
MPC8308 PowerQUICC II Pro Processor Reference Manual, Rev. 1
Freescale Semiconductor 11-33
11.4.13 Auto CMD12 Error Status Register (AUTOC12ERR)
When IRQSTAT[AC12E] is set, the host driver checks this register to identify what kind of error Auto
CMD12 indicated. This register is valid only when IRQSTAT[AC12E] is set.
Figure 11-15 shows the auto CMD12 error status register.
Table 11-20 describes the IRQSTATEN fields.
Offset: 0x03C (AUTOC12ERR) Access: Read
0 23 24 25 26 27 28 29 30 31
R
—
CNIB
AC12E
—
AC12
IE
AC12
CE
AC12
EBE
AC12
TOE
AC12
NE
W
Reset All zeros
Figure 11-15. Auto CMD12 Error Status Register (AUTOC12ERR)
Table 11-20. AUTOC12ERR Field Descriptions
Bit Name Description
0–23 — Reserved
24 CNIBAC12E Command not issued by Auto CMD12 error. This bit is set when CMD_wo_DAT is not
executed due to an Auto CMD12 error (D27–D30).
0 No error
1 Not Issued
25–26 — Reserved
27 AC12IE Auto CMD12 index error. Occurs if the command index error occurs in response to a
command.
0 No error
1 Error, the CMD index in response is not CMD12
28 AC12CE Auto CMD12 CRC error. Occurs when detecting a CRC error in the command response.
0 No CRC error
1 CRC error met in Auto CMD12 response
29 AC12EBE Auto CMD12 end bit error. Occurs when detecting that the end bit of command response
is 0 when it should be 1.
0 No error
1 End bit error generated