28478G-18 Mindspeed Technologies, 28478G-18 Datasheet - Page 133

• 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 Interrupt Queue Descriptor are listed in
Table 6-3.
6.3.5
28478-DSH-002-E
Descriptor
Descriptor
Interrupt
GroupStr0.IntQueueDescr[1] = IntQueueLen;
/* either write directly into MUSYCC register - or - use a service request */
/* for this descriptor, 2 dwords need to be written, so 2 write accesses */
*(MUSYCC_FUNC_0_BAR + INT_QUEUE_POINTER_OFFSET)= GroupStr0.IntQueueDescr[0];
*(MUSYCC_FUNC_0_BAR + INT_QUEUE_LENGTH_OFFSET) = GroupStr0.IntQueueDescr[1];
Queue
/* signal unit error threshold = 0, no SS7 support required */
/* sf alignment = 0, use internal flywheel mechanism after initial frame sync */
/* poll throttle = 1, poll every 16th frame */
/* inhibit tx bsd = 0, do not inhibit */
/* inhibit rx bsd = 0, do not inhibit */
/* memory protection violation action = 0, reset group on detection
/* message config bit copy = 1, enable */
/* mask cofa interrupt = 0, do not mask */
/* mask oof interrupt = 0, do not mask */
/* oof message processing = 0, continue processing incoming messages */
/* subchanneling = 0, enabled */
/* transmitter enabled = 1, enabled */
/* receiver enabled = 1, enabled */
GroupStr0.GroupConfigDescr = 0x00000443;
/* either write directly into MUSYCC register - or - use a service request */
*(MUSYCC_FUNC_0_BAR + GROUP_CONFIG_DESCR_OFFSET) = GroupStr0.GroupConfigDescr;
Example—Components of Interrupt Queue Descriptor
Group Configuration Descriptor
Component of Descriptor
Preliminary Information / Mindspeed Proprietary and Confidential
IQPTR
IQLEN
Mindspeed Technologies
pIntQueue, provided by memory allocation functions and adjusted to be dword
bound
IntQueueLen, specified by #define (0-based)
Table
®
6-3.
Value of Components
Basic Operation
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