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| 型号： | TMDXEVM5515 |
| 厂商： | Texas Instruments |
| 文件页数： | 21/159页 |
| 文件大小： | 0K |
| 描述： | EVAL MODULE DSP FOR C55XX |
| 标准包装： | 1 |
| 类型： | DSP |
| 适用于相关产品： | TMS320C55x 系列 |
| 所含物品： | 板，线缆，CD，电源 |
| 产品目录页面： | 718 (CN2011-ZH PDF) |
| 其它名称： | 296-25753 |
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SPRS645F – AUGUST 2010 – REVISED OCTOBER 2013
2.5.4
EMIF Terminal Functions
Table 2-8. External Memory Interface (EMIF) Terminal Functions
SIGNAL
NAME
NO.
TYPE (1)
(2)
OTHER (3)
(4)
DESCRIPTION
EMIF FUNCTIONAL PINS: ASYNC (NOR, SRAM, and NAND)
Note: When accessing 8-bit Asynchronous memory:
?
?
Connect EM_A[20:0] to memory address pins [22:2]
Connect EM_BA[1:0] to memory address pins [1:0]
For 16-bit Asynchronous memory:
?
?
Connect EM_A[20:0] to memory address pins [21:1]
Connect EM_BA[1] to memory address pin [0]
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF
IPD
external address pin 20.
EM_A[20]/GP[26]
J3
I/O/Z
DV DDEMIF
BH
Mux control via the A20_MODE bit in the EBSR (see Figure 3-3 ).
The IPD resistor on this pin can be enabled or disabled via the PDINHIBR2 register.
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF
IPD
external address pin 19.
EM_A[19]/GP[25]
G4
I/O/Z
DV DDEMIF
BH
Mux control via the A19_MODE bit in the EBSR (see Figure 3-3 ).
The IPD resistor on this pin can be enabled or disabled via the PDINHIBR2 register.
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF
IPD
external address pin 18.
EM_A[18]/GP[24]
G2
I/O/Z
DV DDEMIF
BH
Mux control via the A18_MODE bit in the EBSR (see Figure 3-3 ).
The IPD resistor on this pin can be enabled or disabled via the PDINHIBR2 register.
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF
IPD
external address pin 17.
EM_A[17]/GP[23]
F2
I/O/Z
DV DDEMIF
BH
Mux control via the A17_MODE bit in the EBSR (see Figure 3-3 ).
The IPD resistor on this pin can be enabled or disabled via the PDINHIBR2 register.
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF
IPD
external address pin 16.
EM_A[16]/GP[22]
E2
I/O/Z
DV DDEMIF
BH
Mux control via the A16_MODE bit in the EBSR (see Figure 3-3 ).
The IPD resistor on this pin can be enabled or disabled via the PDINHIBR2 register.
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF
IPD
external address pin 15.
EM_A[15]/GP[21]
N1
I/O/Z
DV DDEMIF
BH
Mux control via the A15_MODE bit in the EBSR (see Figure 3-3 ).
The IPD resistor on this pin can be enabled or disabled via the PDINHIBR2 register.
EM_A[14]
EM_A[13]
EM_A[12]/(CLE)
EM_A[11]/(ALE)
EM_A[10]
M1
L1
K1
K2
L2
I/O/Z
I/O/Z
I/O/Z
I/O/Z
I/O/Z
DV DDEMIF
BH
DV DDEMIF
BH
DV DDEMIF
BH
DV DDEMIF
BH
DV DDEMIF
BH
This pin is the EMIF external address pin 14.
This pin is the EMIF external address pin 13.
This pin is the EMIF external address pin 12. When interfacing with NAND Flash,
this pin also acts as Command Latch Enable (CLE).
This pin is the EMIF external address pin 11. When interfacing with NAND Flash,
this pin also acts as Address Latch Enable (ALE).
This pin is the EMIF external address pin 10.
(1)
(2)
(3)
(4)
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to
float. When they are configured as input or high-impedance state, and not driven to a known state, they may cause an excessive IO-
supply current. Prevent this current by externally terminating it or enabling IPD/IPU, if applicable.
IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup/pulldown resistors and situations where external
pullup/pulldown resistors are required, see Section 3.8.1 , Pullup/Pulldown Resistors .
Specifies the operating I/O supply voltage for each signal
Copyright ? 2010–2013, Texas Instruments Incorporated
Product Folder Links: TMS320C5515
Device Overview
21
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