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TMS320DM6437
Digital Media Processor
SPRS345B–NOVEMBER 2006–REVISED MARCH 2007
Table 2-5. BOOT Terminal Functions
SIGNAL
TYPE
(1)
OTHER
(2)(3)
DESCRIPTION
ZWT
NO.
ZDU
NO.
NAME
BOOT
YOUT3/GP[25]/
(BOOTMODE3)
G16
H21
Bootmode configuration bits. These bootmode functions along with
the FASTBOOT function determine what device bootmode
configuration is selected.
The DM6437 device supports several types of bootmodes along with
a FASTBOOT option; for more details on the types/options, see
Section 3.4.1
,
Boot Modes
.
YOUT2/GP[24]/
(BOOTMODE2)
G15
L20
IPD
DV
DD33
I/O/Z
YOUT1/GP[23]/
(BOOTMODE1)
F15
K20
F18
J20
YOUT0/GP[22]/
(BOOTMODE0)
Fast Boot
0 = Not Fast Boot
1 = Fast Boot
EMIFA Address Bus Width (AEAW) and Fast Boot PLL Multiplier
Select (PLLMS).
These configuration pins serve two purposes which are based on
AEM[2:0] settings.
For AEM[2:0] = 001 [8-bit EMIFA (Async) Pinout Mode 1], the
AEAW/PLLMS pins serve as the AEAW function to select EMIFA
Address Bus Width.
For all other AEM modes, the AEAW/PLLMS pins select the PLL
multiplier for fast boot.
For more details, see
Section 3.5.1.2
,
EMIFA Address Width Select
(AEAW) and Fast Boot PLL Multipler Select (PLLMS)
.
Selects EMIFA Pinout Mode
YOUT4/GP26]/
(FASTBOOT)
IPD
DV
DD33
G17
K19
I/O/Z
R0/EM_A[4]/
GP[10]/
(AEAW2/PLLMS2)
G1/EM_A[1]/
(ALE)/GP[9]/
(AEAW1/PLLMS1)
IPD
DV
DD33
A17
B21
I/O/Z
IPD
DV
DD33
A16
B20
I/O/Z
B1/EM_A[2]/
(CLE)/GP[8]/
(AEAW0/PLLMS0)
IPD
DV
DD33
B16
A20
I/O/Z
R1/EM_A[0]/
GP[7]/(AEM2)
R2/EM_BA[0]/
GP[6]/(AEM1)
IPD
DV
DD33
IPD
DV
DD33
B17
C21
I/O/Z
The DM6437 supports the following EMIFA Pinout Modes:
C17
E20
I/O/Z
AEM[2:0] = 000, No EMIFA
AEM[2:0] = 001, 8-bit EMIFA (Async) Pinout Mode 1
AEM[2:0] = 011, 8-bit EMIFA (Async) Pinout Mode 3
AEM[2:0] = 100, 8-bit EMIFA (NAND) Pinout Mode 4
AEM[2:0] = 101, 8-bit EMIFA (NAND) Pinout Mode 5
B2/EM_BA[1]/
GP[5]/(AEM0)
IPD
DV
DD33
C16
C20
I/O/Z
This signal doesn't actually affect the EMIFA module. It only affects
how the EMIFA is pinned out.
For proper DM6437 device operation, if this pin is
both
routed
and
3-stated (not driven) during device reset, it
must
be pulled down via
an external resistor. For more detailed information on
pullup/pulldown resistors, see
Section 3.9.1
,
Pullup/Pulldown
Resistors
.
PCI Enable
0 = PCI pin function is disabled [default]
1 = PCI pin function is enabled
For proper DM6437 device operation, if this pin is
both
routed
and
3-stated (not driven) during device reset, it
must
be pulled up via an
external resistor. For more detailed information on pullup/pulldown
resistors, see
Section 3.9.1
,
Pullup/Pulldown Resistors
.
YOUT6/
GP[28]
IPD
DV
DD33
H16
J21
I/O/Z
IPD
DV
DD33
PCIEN
T3
W3
I
IPU
DV
DD33
YOUT5/GP[27]
H17
L19
I/O/Z
(1)
(2)
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal
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 3.9.1
,
Pullup/Pulldown Resistors
.
Specifies the operating I/O supply voltage for each signal
(3)
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