TCC76x
Specification Rev. 0.07
February 23, 2005
32-bit RISC Microprocessor for Digital Media Player
USB 2.0 & CARD INTERFACE
Preliminary
22-2
22.2 Register Description
Table 22.1
I/O Port Functions and
Selection Addresses
Addresses
Functions
nCS0
nCS1
A2
A1
A0
Read (nIOR)
Write (nIOW)
1
1
X
X
X
Data bus high impedance
Not used
Control block registers
1
0
0
X
X
Data bus high impedance
Not used
1
0
1
0
X
Data bus high impedance
Not used
1
0
1
1
0
Alternate Status
Device Control
1
0
1
1
1
Obsolete
Not used
Command block registers
0
1
0
0
0
Data
Data
0
1
0
0
1
Error
Features
0
1
0
1
0
Sector Count
Sector Count
0
1
0
1
1
Sector Number
Sector Number
0
1
1
0
0
Cylinder Low
Cylinder Low
0
1
1
0
1
Cylinder High
Cylinder High
0
1
1
1
0
Device/Head
Device/Head
0
1
1
1
1
Status
Command
0
0
X
X
X
Invalid address
Invalid address
Table 22.2 The Relationship of MST[2:0] Pins and Feature Register
MST[2:0]
Configuration
Feature register
111
Record in flash memory by AP. In USB Mode, First
slot is NAND Flash memory, Second slot is
MMC/SD and Third slot is MS/MS Pro/New MS card
0x80: direct to Flash Memory Hidden disk
0x00: direct to NAND Flash Memory FAT disk.
0x01: direct to MMC/SD card
0x02: direct to MS/MS Pro card
001
Only support MMC/SD card
0x00: direct to MMC/SD card
010
Only support MS/MS_Pro card
0x00: direct to MS/MS Pro card
011
Support two kinds of card above. And MMC/SD is
the first slot in USB mode.
0x00: direct to MMC/SD card
0x01: direct to MS/MS Pro card
100
Support two kinds of card above. And MS/MS_Pro
card is the first slot in USB mode.
0x00: direct to MS/MS Pro card
0x01: direct to MMC/SD card
Value of Feature register is slot number of each memory.
Fill feature register before access command
After Feature register has been filled, Initial Media Command(0x62) should be issued.
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