MSC8113 Reference Manual, Rev. 0
25-68
Freescale Semiconductor
Ethernet Controller
FTXSR informs the system of extremely imminent underrun conditions. It represents the
numerical SRAM entry (0–511 for a 2K FIFO) to trigger the starve function. If the Used Entry
Count Register shows that the number of valid entries in the FIFO is less than or equal to that in
the FTXSR, a starve alert is triggered. This triggered condition is used to throttle back the
OCN2CU interface at the Elf Coherency Module (ECM), to change the Tx transaction priority.
This register is read/write by software.
FTXSR
FIFO Transmit Starve Register
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
—
Type
R
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
—
FTXS
Type
R
R/W
Reset
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
Table 25-36. FTXSR Bit Descriptions
Bit
Reset
Description
—
0–22
0
Reserved. Write to zero for future compatibility.
FTXS
23–31
100000000 FIFO Transmit Starve
Indicate the value to trigger the transmit starve function, which triggers when the number of valid
entries in the FIFO is less than or equal to the that in the FTXSR. The starve state turns off when
the number of valid entries in the FIFO becomes greater than or equal to that in the FIFO Tx Starve
Shutoff Register (FTXSSR).
FTXSSR
FIFO Transmit Starve Shutoff Register
Bit
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
—
Type
R
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
—
FTXSS
Type
R
R/W
Reset
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
Summary of Contents for MSC8113
Page 1: ...MSC8113 Reference Manual Tri Core 16 Bit Digital Signal Processor MSC8113RM Rev 0 May 2008 ...
Page 20: ...MSC8113 Reference Manual Rev 0 xx Freescale Semiconductor Contents ...
Page 28: ...MSC8113 Reference Manual Rev 0 xxviii Freescale Semiconductor ...
Page 56: ...MSC8113 Reference Manual Rev 0 1 28 Freescale Semiconductor MSC8113 Overview ...
Page 76: ...MSC8113 Reference Manual Rev 0 2 20 Freescale Semiconductor SC140 Core Overview ...
Page 134: ...MSC8113 Reference Manual Rev 0 4 30 Freescale Semiconductor System Interface Unit SIU ...
Page 168: ...MSC8113 Reference Manual Rev 0 6 18 Freescale Semiconductor Boot Program ...
Page 180: ...MSC8113 Reference Manual Rev 0 7 12 Freescale Semiconductor Clocks ...
Page 260: ...MSC8113 Reference Manual Rev 0 8 80 Freescale Semiconductor Memory Map ...
Page 300: ...MSC8113 Reference Manual Rev 0 9 40 Freescale Semiconductor Extended Core ...
Page 304: ...MSC8113 Reference Manual Rev 0 10 4 Freescale Semiconductor MQBus and M2 Memory ...
Page 308: ...MSC8113 Reference Manual Rev 0 11 4 Freescale Semiconductor SQBus ...
Page 590: ...MSC8113 Reference Manual Rev 0 17 46 Freescale Semiconductor Interrupt Processing ...
Page 614: ...MSC8113 Reference Manual Rev 0 18 24 Freescale Semiconductor Debugging ...
Page 622: ...MSC8113 Reference Manual Rev 0 19 8 Freescale Semiconductor Internal Peripheral Bus IPBus ...
Page 724: ...MSC8113 Reference Manual Rev 0 21 32 Freescale Semiconductor UART ...
Page 920: ...MSC8113 Reference Manual Rev 0 25 150 Freescale Semiconductor Ethernet Controller ...
Page 1171: ...MSC8113 Reference Manual Rev 0 Freescale Semiconductor C 61 EF wait_rts P 01077FFC 9F rts 71 ...
Page 1172: ...MSC8113 Reference Manual Rev 0 C 62 Freescale Semiconductor MSC8113 Boot Code ...
Page 1202: ...MSC8113 Reference Manual Rev 0 Index 30 Freescale Semiconductor Index ...