28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 134

• Manufacturer Part Number: 28478G-18
• Description: Multichannel Synchronous Communications Controller 208-Pin BGA
• Manufacturer: Mindspeed Technologies

Specifications of 28478G-18

• Package: 208BGA
• Maximum Data Rate: 32768 Kbps
• Transmission Media Type: Wire
• Power Supply Type: Analog
• Typical Supply Current: 250 mA
• Typical Operating Supply Voltage: 3.3 V
• Minimum Operating Supply Voltage: 3 V
• Maximum Operating Supply Voltage: 3.6 V

The components of the Group Configuration Descriptor are listed in
Table 6-4.
6.3.6
The components of the Memory Protection Descriptor are listed in
Table 6-5.
6.3.7
28478-DSH-002-E
Memory Protection Descriptor
Configuration
Descriptor
Descriptor
/* memory protection disabled = 0 */
GroupStr0.MemoryProtectDescr = 0x00000000;
/* either write directly into MUSYCC register - or - use a service request */
*(MUSYCC_FUNC_0_BAR + GROUP_CONFIG_DESCR_OFFSET) = GroupStr0.MemoryProtectDescr;
/* three-state transmitter output = 0 */
/* rx out of frame signal active edge = 0, falling edge */
/* rx synchronization signal active edge = 0, falling edge */
/* rx data signal active edge = 0, falling edge */
/* tx synchronization signal active edge = 0, falling edge */
/* tx data signal active edge = 0, falling edge */
/* port mode = 1, E1 32 time slot */
GroupStr0.PortConfigDescr = 0x00000001;
/* either write directly into MUSYCC register - or - use a service request */
*(MUSYCC_FUNC_0_BAR + PORT_CONFIG_DESCR_OFFSET) = GroupStr0.PortConfigDescr;
Group
Descriptor
Example—Components of Group Configuration Descriptor
Example—Components of Memory Protection Descriptor
Memory Protection Descriptor
Port Configuration Descriptor
SUET
SFALIGN
POLLTH
INHTBSD
INHRBSD
MEMPVA
MCENBL
MSKCOFA
MSKOOF
OOFABT
SUBDSBL
TXENBL
RXENBL
Component of Descriptor
Preliminary Information / Mindspeed Proprietary and Confidential
PROTENBL
Mindspeed Technologies
Component of Descriptor
0 = SS7 not being used
0 = Use internal flywheel mechanism
1 = Poll buffer ownership every 16th frame per channel
0 = Allow tx buffer status descriptor writes
0 = Allow rx buffer status descriptor writes
0 = On memory protection violation, reset group
1 = Message configuration bits copy enabled
0 = Do not mask COFA interrupt
0 = Do not mask OOF interrupt
0 = On OOF detection, continue processing channel
0 = Subchanneling enabled
1 = Transmitter enabled
1 = Receiver enabled
Table
®
Table
0 = Memory protection disabled
6-5.
Value of Components
6-4.
Value of Components
Basic Operation
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