Telit Wireless Solutions GS2101M Series, Command Reference Manual

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GS2101M IP2WiFi Adapter Command Reference Guide
1VV0301499
Rev. 2.0 55 2019-08-05
– Set the 4bit/1 bit mode depends on the above capability
4. Write the CCR register 0x02 to enable the SDIO card.
5. Write the CCR register 0x04 to enable the card interrupt for a function
6. Write CCR register 0x110 and 0x111 to set the card block size
– Here, initialization at function 0x00 is done.
– Function 1 is used for read/write data from the card.
– Only two function 1 registers are accessible from the host
- One is the interrupt which indicates pending data at 0x05
- Other is the read count bytes at 0x1c -0x1d.
The following table describes the values of SDIO CCR registers before and after
initialization for reference.
Table 23 DIO CCR registers before and after initialization
S. No. Address Name Value
(Before)
Value
(After)
1
0x00 CCCR/SDIO Version 0x32 0x32
2
0x01
SD Specification
Revision
0x02 0x02
3
0x02 I/O Enable 0x00 0x02
4
0x03 I/O Ready 0x00 0x02
5
0x04 Int Enable 0x00 0x03
6
0x05 Int Pending 0x00 0x02
7
0x06 I/O Abort 0x00 0x00
8
0x07 Bus Interface Control 0x02 0x02
9
0x08 Card Capability 0x1f 0x1f
10
0c09 Common CIS Pointer 0x00 0x00
11
0x0a Common CIS Pointer 0x10 0x10
12
0x0b Common CIS Pointer 0x00 0x00
13
0x0c Bus Suspend 0x00 0x00
14
0x0d Function Select 0x00 0x00
15
0x0e Exec Flags 0x00 0x00
16
0x0f Ready Flags 0x00 0x00
17
0x10 FN0 Block Size 0x00 0x00
18
0x11 FN0 Block Size 0x00 0x00
19
0x12 Power Control 0x01 0x01
20
0x13 High Speed 0x03 0x03