參數(shù)資料
型號： TMX320DM648ZUT720
廠商： Texas Instruments, Inc.
英文描述： Digital Media Processor
中文描述： 數(shù)字媒體處理器
文件頁數(shù)： 45/166頁
文件大小： 1341K
代理商： TMX320DM648ZUT720
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P
3.2.7
ESS_LOCK
3.2.8
MAC Address Registers
MAC_ADDR_R0
MAC_ADDR_R1
MAC_ADDR_RW0
MAC_ADDR_RW1
TMS320DM647/TMS320DM648
Digital Media Processor
SPRS372–MAY 2007
Table 3-7. PCI/UHPI/GPIO Block: PCI MUXed With UHPI and GPIO[0:7]
MUXED
(1)
PCI
UHPI/GPIO[0:7]
UHPIEN (pin)
1
0
UHPI/GPIO[0:7]
PCI
(1)
The complete list of pin:AA22, AB22, AC21, AA23, AC22, AB21, AA21, Y21, AB20, AA20, Y20, Y19, AB18, AA19, AC18, AA18, Y16,
AB15, AA15, Y15, W15, V15, AC14, AB14, W14, V14, AC13, AB13, AA13, Y13 , W13, V13, W19, Y18, Y17, W17, W18, AC20, AC17,
W16, Y14, AC15, AA16, AB17, U13, U12, V12, AA12, AA17, AA14.
For information on the Ethernet Subsystem registers, see the
TMS320DM647/DM648 DMP DSP
Subsystem Reference Guide
(literature number
SPRUEU6
).
Figure 3-7. SerDes Macro Configuration (SERDES_CFG_CNTL) Register
31
16
Reserved
15
10
9
8
7
5
4
1
0
Reserved
LB
Reserved
MPY
ENPLL
R-0
R/W-0
R-0
R/W-1001
R/W-1
LEGEND: R/W = Read/Write; R = Read only; -
n
= value after reset
The ESS_LOCK register protects the Ethernet Subsystem MMR space (0x02D0 0000 - 0x02D0 4FFF)
and the Ethernet Subsystem's LPSC (LPSC34) MDCTL register (0x0204 6088). The default value of
ESS_LOCK is 0x0000 0000 and read/write is allowed to Ethernet Subsystem MMR space and MDCTL
[34]. To lock the write access to both Ethernet Subsystem MMR space and MDCTL [34], software must
write a value of 0x AAAA AAAA to the ESS_LOCK register. To make sure that the desired lock has been
achieved, the software must read the ESS_LOCK register till it gets a value of 0x1. The software must
make sure that there are no pending accesses to either the Ethernet Subsystem MMR space or MDCTL
[34]. Read access to both Ethernet Subsystem MMR space and MDCTL [34] should be unaffected while
write accesses are locked. To unlock the write access to Ethernet Subsystem MMR space and MDCTL
[34], the software must write a value of 0xCCCC CCCC to ESS_LOCK. To make sure that the desired
write lock has been removed, the software must read ESS_LOCK till it gets a value of 0x0.
Figure 3-8. ESS_LOCK Register
31
0
ESS_LOCK
R/W-0x00000000
LEGEND: R/W = Read/Write; R = Read only; -
n
= value after reset
In DM647/DM648, two sets of registers provide default MAC addresses for the device. One set -
MAC_ADDR_R0 and MAC_ADDR_R1 - is read only and the other set - MAC_ADDR_RW0 and
MAC_ADDR_RW1 - includes read and write registers.
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Device Configuration
45
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