Maximum Current Capabilities Register (Sd_Cur_Capa); Maximum Current Capabilities Register (Sd_Cur_Capa) Field Descriptions - Texas Instruments TMS320C6A816 Series Technical Reference Manual

Registers

9.4.27 Maximum Current Capabilities Register (SD_CUR_CAPA)

This register indicates the maximum current capability for each voltage. The value is meaningful if the
voltage support is set in the capabilities register (SD_CAPA).
Initialization of this register (via a write access to this register) depends on the system capabilities. The
host driver shall not modify this register after the initialization.
This register is only reinitialized by a hard reset (via RESET signal). The maximum current capabilities
register (SD_CUR_CAPA) is shown in
Figure 9-55. Maximum Current Capabilities Register (SD_CUR_CAPA)
31
Reserved
R-0
LEGENDR/W = Read/Write; R = Read only; -n = value after reset
Table 9-37. Maximum Current Capabilities Register (SD_CUR_CAPA) Field Descriptions
Bit Field
31-24 Reserved
23-16 CUR_1V8
15-8 CUR_3V0
7-0 CUR_3V3
1004
Secure Digital (SD)/—Secure Digital I/O (SDIO) Card Interface
Figure 9-55
24 23
CUR_1V8
R/W-0
Value Description
0 Reserved. This bit is initialized to zero, and writes to it are ignored.
Maximum current for 1.8 V
Read 0 The maximum current capability for this voltage is not available. Feature not implemented.
Maximum current for 3.0 V
Read 0 The maximum current capability for this voltage is not available. Feature not implemented.
Maximum current for 3.3 V
Read 0 The maximum current capability for this voltage is not available. Feature not implemented.
© 2011, Texas Instruments Incorporated
Preliminary
and described in Table
16 15
CUR_3V0
R/W-0
www.ti.com
9-37.
8 7
CUR_3V3
R/W-0
SPRUGX9 – 15 April 2011
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