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3.4.2
Peripheral Configuration Register 0 Description
SM320C6455-EP
FIXED-POINT DIGITAL SIGNAL PROCESSOR
SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008
The Peripheral Configuration Register (PERCFG0) is used to change the state of the peripherals. One
write is allowed to this register within 16 SYSCLK3 cycles after the correct key is written to the PERLOCK
register.
NOTE
The instructions that write to the PERLOCK and PERCFG0 registers must be in the same
fetch packet if code is being executed from external memory. If the instructions are in
different fetch packets, fetching the second instruction from external memory may stall the
instruction long enough such that PERCFG0 register will be locked before the instruction
is executed.
31
30
29
24
SRIOCTL
Reserved
R/W-0
R/W-0
23
22
21
20
19
18
17
16
Reserved
UTOPIACTL
Reserved
PCICTL
Reserved
HPICTL
Reserved
McBSP1CTL
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
15
14
13
12
11
10
9
8
Reserved
McBSP0CTL
Reserved
I2CCTL
Reserved
GPIOCTL
Reserved
TIMER1CTL
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
7
6
5
4
3
2
1
0
Reserved
TIMER0CTL
Reserved
EMACCTL
Reserved
VCPCTL
Reserved
TCPCTL
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
R/W-0
LEGEND:
R/W = Read/Write only; -
n
= value after reset
Figure 3-4. Peripheral Configuration Register 0 (PERCFG0) - 0x02AC 0008
Table 3-7. Peripheral Configuration Register 0 (PERCFG0) Field Descriptions
Bit
Field
Value
Description
31-30
SRIOCTL
Mode control for SRIO. SRIO does not have a corresponding status bit in the Peripheral Status
Registers. Once SRIOCTL is set to 11b, the SRIO peripheral can be used within 16 SYSCLK3
cycles.
00b
Set SRIO to disabled mode
11b
Set SRIO to enabled mode
29:23
Reserved
Reserved.
22
UTOPIACTL
Mode control for UTOPIA
0
Set UTOPIA to disabled mode
1
Set UTOPIA to enabled mode
21
Reserved
Reserved.
20
PCICTL
Mode control for PCI. This bit defaults to 1 when Host boot is used (BOOTMODE[3:0] = 0111b).
0
Set PCI to disabled mode
1
Set PCI to enabled mode
19
Reserved
Reserved.
18
HPICTL
Mode control for HPI. This bit defaults to 1 when Host boot is used (BOOTMODE[3:0] = 0001b).
0
Set HPI to disabled mode
1
Set HPI to enabled mode
17
Reserved
1
Reserved.
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