ADSP-214xx SHARC Processor Hardware Reference A-97
Registers Reference
System Data Configuration Register (MLB_SDCR)
This register, described in Table A-59, allows system software to receive
control information from the MLB controller. The MLB_SDCR register is
updated once per frame by the hardware during the MLB system channel.
This register is loaded with the data from the
MLBDAT_IN signal during the
system channel quadlet. System software must read the
MLB_SDCR register
before the start of the next MLB frame to prevent the current data from
being lost.
Table A-58. MLB_SSCR Register Bit Descriptions (RW1C)
Bit Name Description
0SDRSystem Detects Reset Command. When set, indicates MLB device
has received MLBReset system command.
1SDNLSystem Detects Network Lock. When set, indicates the MLB device
has received Most lock system command.
2SDNUSystem Detects Network Unlock. When set, indicates the MLB
device has received MOST unlock system command.
3SDCSSystem Detects Channel Scan. When set, indicates the MLB device
has received the MLBScan system command. The device address is
stored in the SDCR register.
4SDSCSystem Detects Subcommand. When set, indicates the MLB device
has received the MLBSubCmd system command. The device com-
mand is stored in the SDCR register and decoding is performed by
software.
5SDMLSystem Detects MLB Lock. When set, indicates the MLB device has
locked onto the MLB frame.
6SDMUSystem Detects MLB Unlock.When set, indicates the MLB device
has unlocked from the MLB frame.
7 (RW) SSRE System Service Request Enable. When set, indicates that the MLB
device needs service. Write 1 to set.
31–8 Reserved
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