Datasheet

Table Of Contents
TMS320DM6467T
SPRS605C JULY 2009REVISED JUNE 2012
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4.6.2.1 HPICTL Register
The HPI control register (HPICTL) [0x01C4 0030] controls write access to HPI control and address
registers and determines the host time-out value. HPICTL is not reset by a soft reset so that the HPI width
will remain correctly configured. Figure 4-14 and Table 4-18 describe in detail the HPICTL register.
31 18 17 16
RESERVED RESERVED
R-0000 0000 0000 00 R/W-00
15 14 10 9 8 7 0
WIDTH RESERVED CTLMODE ADDMODE TIMOUT
R/W-0 R-000 00 R/W-0 R/W-0 R/W-1000 0000
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Figure 4-14. HPICTL Register [0x01C4 0030]
Table 4-18. HPICTL Register Bit Descriptions
BIT NAME DESCRIPTION
31:18 RESERVED Reserved. Read-only, writes have no effect.
17:16 RESERVED Reserved. For proper device operation, the user should only write "0" to these bits (default).
HPI Data Width.
0 = Half-width (16-bit) data bus
15 WIDTH 1 = Full-width (32-bit) data bus
This bit value must be determined before releasing the UHPI from reset to ensure correct UHPI
operation.
14:10 RESERVED Reserved. Read-only, writes have no effect.
HPIC Register Write Access.
9 CTLMODE 0 = Host
1 = DMSoC (if ADDMODE = 1)
HPIA Register Write Access.
8 ADDMODE 0 = Host
1 = DMSoC
Host Burst Write Timeout Value.
When the HPI time-out counter reaches the value programmed here, the HPI write FIFO content is
7:0 TIMOUT
flushed. For more details on the time-out counter and its use in write bursting, see the
TMS320DM646x DMSoC Host Port Interface (HPI) User's Guide (literature number SPRUES1).
4.6.2.2 USBCTL Register
The USB interface control register (USBCTL) [0x01C4 0034] is described in Figure 4-15 and Table 4-19.
31 19 18 17 16
RESERVED DATAPOL VBUSVAL USBID
R-0000 0000 0000 0 R/W-1 R/W-0 R/W-0
15 9 8 7 5 4 3 1 0
PHY PHY PHY
RESERVED RESERVED RESERVED
CLKGD PLLON PDWN
R-0000 000 R-0 R-000 R/W-0 R-000 R/W-1
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Figure 4-15. USBCTL Register [0x01C4 0034]
106 Device Configurations Copyright © 2009–2012, Texas Instruments Incorporated
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