Memory Stick Host Controller Operation
MOTOROLA
Memory Stick Host Controller (MSHC) Module
21-9
21.5.5.1 Register Access During Power Save Mode
Note that the following registers cannot be written while the MSHC module is in Power Save Mode (PWS
bit = 1).
•
MSCMD, MSTDATA, MSC2 (except MSCEN bit), MSACD, MSFAECS, and MSDRQC register
21.5.5.2 Register Access When MSHC Module is Disabled
The following register must only be written in MSHC module disable mode (MSCEN bit = 0).
•
SRC bit and DIV [1:0] bits of MSCLKD register
Setting the MSCEN bit from 1 to 0 causes all of MSHC module’s registers to initialize except the MSCEN
bit of MSC2 register and the MSCLKD register.
The following procedure is used to initialize the MSHC module registers for operation:
1. Set the MSCEN bit of MSC2 to
1.
2. Write the value to other registers or other bits of MSC2
3. ...... etc.
21.5.6 Auto Command Function
The MSHC module supports an Auto Command function. Auto Command automatically executes
GET_INT or READ_REG on the host interface for checking status after SET_CMD ends.
With this function, the INT signal from the Memory Stick is detected and the command set in the Memory
Stick Auto Command Register is executed.
The result of an automatically executed command (the value of the read register) is put in the receive data
buffer.
The time required and ARM920T processor load is lower with this function than when the ARM920T
processor executes SET_CMD and then GET_INT (or READ_REG).
NOTE:
Be sure that READ_SIZE is set to 4 half-words or less when executing
READ_REG using the ACD.
Figure 21-5 on page 21-10 indicates the ARM920T core processing and host interface operations when the
ACD is used. This figure illustrates BLOCK_READ in SET_CMD execution.
Summary of Contents for DragonBall MC9328MX1
Page 68: ...1 12 MC9328MX1 Reference Manual MOTOROLA Introduction ...
Page 86: ...2 18 MC9328MX1 Reference Manual MOTOROLA Signal Descriptions and Pin Assignments ...
Page 116: ...3 30 MC9328MX1 Reference Manual MOTOROLA Memory Map ...
Page 126: ...4 10 MC9328MX1 Reference Manual MOTOROLA ARM920T Processor ...
Page 160: ...8 8 MC9328MX1 Reference Manual MOTOROLA System Control ...
Page 272: ...13 32 MC9328MX1 Reference Manual MOTOROLA DMA Controller ...
Page 281: ...Programming Model MOTOROLA Watchdog Timer Module 14 9 ...
Page 282: ...14 10 MC9328MX1 Reference Manual MOTOROLA Watchdog Timer Module ...
Page 300: ...15 18 MC9328MX1 Reference Manual MOTOROLA Analog Signal Processor ASP ...
Page 438: ...18 16 MC9328MX1 Reference Manual MOTOROLA Serial Peripheral Interface Modules SPI 1 and SPI 2 ...
Page 478: ...19 40 MC9328MX1 Reference Manual MOTOROLA LCD Controller ...
Page 574: ...21 32 MC9328MX1 Reference Manual MOTOROLA Memory Stick Host Controller MSHC Module ...
Page 598: ...23 16 MC9328MX1 Reference Manual MOTOROLA Real Time Clock RTC ...
Page 670: ...24 72 MC9328MX1 Reference Manual MOTOROLA SDRAM Memory Controller ...
Page 726: ...25 56 MC9328MX1 Reference Manual MOTOROLA SmartCard Interface Module SIM ...
Page 736: ...26 10 MC9328MX1 Reference Manual MOTOROLA General Purpose Timers ...
Page 854: ...29 18 MC9328MX1 Reference Manual MOTOROLA I2C Module ...
Page 900: ...30 46 MC9328MX1 Reference Manual MOTOROLA Synchronous Serial Interface SSI ...
Page 942: ...32 26 MC9328MX1 Reference Manual MOTOROLA GPIO Module and I O Multiplexer IOMUX ...