TMS320DM647 datasheet(27/167 Pages) TI

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TMS320DM647/TMS320DM648

Digital Media Processor

SPRS372A – MAY 2007 – REVISED JUNE 2007

Table 2-4. TERMINAL FUNCTIONS (continued)

TERMINAL NAME

TYPE

INTERNAL

OPER

DESCRIPTION

PULLUP/

VOLT

PULLDOWN

VP4CTL0/ABA0

I/O/Z

IPD

3.3 V

Video Port 4 Control 0 or EMIFA bank address control (ABA[1:0])

(O/Z). Active-low bank selects for the 16-bit EMIFA. When

interfacing to 16-bit asynchronous devices, ABA1 carries bit 1 of

the byte address. For an 8-bit asynchronous interface, ABA[1:0]

are used to carry bits 1 and 0 of the byte address.

VP4CTL1/ABA1

I/O/Z

IPD

3.3 V

Video Port 4 Control 1 or EMIFA bank address control (ABA[1:0])

(O/Z). Active-low bank selects for the 16-bit EMIFA. WHEN

interfacing to 16-bit asynchronous devices, ABA1 carries bit 1 of

the byte address. For an 8-bit asynchronous interface, ABA[1:0]

are used to carry bits 1 and 0 of the byte address.

VP4CTL2/AADS

I/O/Z

IPD

3.3 V

Video Port 4 Control 2 or Programmable synchronous address

strobe or read-enable. For programmable synchronous interface,

the r_enable field in the ChipSelect x Configuration Register

selects between ASADS and ASRE:

– If r_enable = 0, then the ASADS/ASRE signal functions as the

ASADS signal.

– If r_enable = 1, then the ASADS/ASRE signal functions as the

ASRE signal.

VP4D02/ABE00

I/O/Z

IPU

3.3 V

Video Port 4 Data 2 or EMIFA byte-enable control 0. Decoded

from the low-order address bits. The number of address bits or

byte enables used depends on the width of external memory.

Byte-write enables for most types of memory.

VP4D03/ABE01

I/O/Z

IPU

3.3 V

Video Port 4 Data 3 or EMIFA byte-enable control 1. Number of

address bits or byte enables used depends on the width of

external memory. Byte-write enables for most types of memory.

VP4D04/AEA10

I/O/Z

IPU

3.3 V

Video Port 4 Data 4 or EMIFA External Address 10 (word address)

(O/Z)

VP4D05

I/O/Z

IPU

3.3 V

Video Port 4 Data 5

VP4D06/ACE2

I/O/Z

IPU

3.3 V

Video Port 4 Data 6 or EMIFA memory space enable 2

VP4D07/ACE3

I/O/Z

IPU

3.3 V

Video Port 4 Data 7 or EMIFA memory space enable 3

VP4D08/AEA00

I/O/Z

IPD

3.3 V

Video Port 4 Data 8 or EMIFA External Address 0 (word address)

(O/Z)

VP4D09/AEA01

I/O/Z

IPD

3.3 V

Video Port 4 Data 9 or EMIFA External Address 1 (word address)

(O/Z)

VP4D12/AEA02

I/O/Z

IPD

3.3 V

Video Port 4 Data 12 or EMIFA External Address 2 (word address)

(O/Z)

VP4D13/AEA03

I/O/Z

IPD

3.3 V

Video Port 4 Data 13 or EMIFA External Address 3 (word address)

(O/Z)

VP4D14/AEA04

I/O/Z

IPD

3.3 V

Video Port 4 Data 14 or EMIFA External Address 4 (word address)

(O/Z)

VP4D15/AEA05

I/O/Z

IPD

3.3 V

Video Port 4 Data 15 or EMIFA External Address 5 (word address)

(O/Z)

VP4D16/AEA06

I/O/Z

IPD

3.3 V

Video Port 4 Data 16 or EMIFA External Address 6 (word address)

(O/Z)

VP4D17/AEA07

I/O/Z

IPD

3.3 V

Video Port 4 Data 17 or EMIFA External Address 7 (word address)

(O/Z)

VP4D18/AEA08

I/O/Z

IPD

3.3 V

Video Port 4 Data 18 or EMIFA External Address 8 (word address)

(O/Z)

VP4D19/AEA09

I/O/Z

IPD

3.3 V

Video Port 4 Data 19 or EMIFA External Address 9 (word address)

(O/Z)

EMIFA

AEA23

IPD

3.3 V

EMIFA External Address 23 (word address) (O/Z)

AEA19

O/Z

IPU

3.3 V

EMIFA External Address 19 (word address) (O/Z)

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