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Registers | www.ti.com |
4.68 NAKLimit0 Register (Host mode only) (HOST_NAKLIMIT0)
The NAKLimit0 Register (Host mode only) (HOST_NAKLIMIT0) is shown in Figure 83 and described in Table 84.
Figure 83. NAKLimit0 Register (Host mode only) (HOST_NAKLIMIT0)
7 | 5 | 4 | 0 |
| Reserved |
| EP0NAKLIMIT |
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LEGEND: R/W = Read/Write; R = Read only;
Table 84. NAKLimit0 Register (Host mode only) (HOST_NAKLIMIT0) Field Descriptions
Bit | Field | Value | Description |
Reserved | 0 | Reserved | |
EP0NAKLIMIT | Sets the number of frames/microframes |
out on receiving a stream of NAK responses. The number of frames/microframes selected is
Note: A value of 0 or 1 disables the NAK timeout function.
4.69 Transmit Interval Register (Host mode only) (HOST_TXINTERVAL)
The Transmit Interval Register (Host mode only) (HOST_TXINTERVAL) is shown in Figure 84 and described in Table 85.
Figure 84. Transmit Interval Register (Host mode only) (HOST_TXINTERVAL)
7 | 0 |
POLINTVL_NAKLIMIT
LEGEND: R/W = Read/Write;
Table 85. Transmit Interval Register (Host mode only) (HOST_TXINTERVAL) Field Descriptions
Bit | Field | Value | Description |
POLINTVL_NAKLIMIT | For Interrupt and Isochronous transfers, defines the polling interval for the | ||
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| frames/microframes after which the endpoint should timeout on receiving a stream of NAK |
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| responses There is a transmit Interval register for each configured transmit endpoint |
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| (except Endpoint 0). In each case the value that is set defines a number of |
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| frames/microframes (High Speed transfers), as follows: |
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| Transfer Type Speed Valid values (m) Interpretation |
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| Interrupt Low Speed or Full Speed 1 - 255 Polling interval is m frames |
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| High Speed 1 - 16 Polling interval is |
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| Isochronous Full Speed or High Speed 1 - 16 Polling interval is |
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| Bulk Full Speed or High Speed 2 - 16 NAK Limit is |
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| Note: A value of 0 or 1 disables the NAK timeout function. |
130 | Universal Serial Bus (USB) Controller |