MD4331-d1G-MECH M-Systems Inc., MD4331-d1G-MECH Datasheet - Page 58

• Manufacturer Part Number: MD4331-d1G-MECH
• Description: Mobile Diskonchip G3 Data Sheet
• Manufacturer: M-Systems Inc.

8.9
Description:
Address (hex): 100A
8.10 Configuration Register
Description:
Address (hex): 100E
55
Read/Write
Description
Reset Value
Read/Write
Description
Reset Value
Bit No.
Bit No.
6, 3-1
1-0
7-2
5-4
0
7
Device ID Select Register
ID[1:0] (Identification). The device whose ID input pins/balls match the value of bits ID[0:1]
responds to read and write cycles to register space.
Reserved for future use.
VCCQ_3V: Reflects the level of VCCQ input.
0: VCCQ < 2.0V
1: VCCQ > 2.5V
Reserved for future use.
MAX_ID (Maximum Device ID). This field controls the Programmable Boot Block address
mapping when multiple devices are used in a cascaded configuration, using the ID[1:0]
inputs. It should be programmed to the highest ID value that is found by software in order to
map all available boot blocks into usable address spaces.
IF_CFG (Interface Configuration). Reflects the state of the IF_CFG input pin.
In a cascaded configuration, this register controls which device provides the
register space. The value of bits ID[0:1] is compared to the value of the ID
configuration input pins/balls. The device whose ID input matches the value of
bits ID[0:1] responds to read and write cycles.
This register indicates the current configuration of Mobile DiskOnChip G3.
Unless otherwise noted, the bits are reset only by a hardware reset, and not upon
boot detection or any other entry to Reset mode.
IF_CFG
Bit 7
Bit 7
X
0
R
RFU_0
Bit 6
Bit 6
0
0
Bit 5
Bit 5
Data Sheet, Rev. 1.0
0
0
MAX_ID
RFU_0
R/W
R
Bit 4
Bit 4
0
Description
Description
0
Bit 3
RFU
Bit 3
0
0
Bit 2
Bit 2
0
0
RFU_0
R
Bit 1
Bit 1
0
Mobile DiskOnChip G3
0
ID[1:0]
91-SR-011-05-8L
R/W
VCCQ_3V
Bit 0
Bit 0
X
0