USB Registers
16.5.7.3 FDBSC0 Register (offset = 20h) [reset = 0h]
FDBSC0 is shown in
and described in
.
Figure 16-279. FDBSC0 Register
31
30
29
28
27
26
25
24
FDBQ3_STARVE_CNT
R-0
23
22
21
20
19
18
17
16
FDBQ2_STARVE_CNT
R-0
15
14
13
12
11
10
9
8
FDBQ1_STARVE_CNT
R-0
7
6
5
4
3
2
1
0
FDBQ0_STARVE_CNT
R-0
LEGEND: R/W = Read/Write; R = Read only; W1toCl = Write 1 to clear bit; -n = value after reset
Table 16-293. FDBSC0 Register Field Descriptions
Bit
Field
Type
Reset
Description
31-24
FDBQ3_STARVE_CNT
R-0
0
This field increments each time the Free Descriptor/Buffer Queue 3
is read while it is empty via the CPPI DMA.
This field is cleared when read via the cpu.
23-16
FDBQ2_STARVE_CNT
R-0
0
This field increments each time the Free Descriptor/Buffer Queue 2
is read while it is empty via the CPPI DMA.
This field is cleared when read via the cpu.
15-8
FDBQ1_STARVE_CNT
R-0
0
This field increments each time the Free Descriptor/Buffer Queue 1
is read while it is empty via the CPPI DMA.
This field is cleared when read via the cpu.
7-0
FDBQ0_STARVE_CNT
R-0
0
This field increments each time the Free Descriptor/Buffer Queue 0
is read while it is empty via the CPPI DMA.
This field is cleared when read via the cpu.
Queue_Manager_Free_Descriptor_Buffer_Starvation_Count
Register 0
2111
SPRUH73H – October 2011 – Revised April 2013
Universal Serial Bus (USB)
Copyright © 2011–2013, Texas Instruments Incorporated