参数资料
型号: SM320C6414DGADW60
厂商: TEXAS INSTRUMENTS INC
元件分类: 数字信号处理
英文描述: 64-BIT, 75 MHz, OTHER DSP, CPGA570
封装: 33 X 33 MM, CERAMIC, FCPGA-570
文件页数: 78/134页
文件大小: 1997K
代理商: SM320C6414DGADW60
SMJ320C6414, SMJ320C6415, SMJ320C6416
FIXEDPOINT DIGITAL SIGNAL PROCESSORS
SGUS050A JANUARY 2004 REVISED MARCH 2004
48
POST OFFICE BOX 1443
HOUSTON, TEXAS 772511443
Terminal Functions (Continued)
SIGNAL
TYPE
IPD/
DESCRIPTION
NAME
NO.
TYPE
IPD/
IPU
DESCRIPTION
EMIFB (16-bit) CONTROL SIGNALS COMMON TO ALL TYPES OF MEMORY||k
BCE3
D11
O/Z
IPU
EMIFB memory space enables
BCE2
C9
O/Z
IPU
EMIFB memory space enables
Enabled by bits 26 through 31 of the word address
BCE1
H12
O/Z
IPU
Enabled by bits 26 through 31 of the word address
Only one pin is asserted during any external data access
BCE0
G12
O/Z
IPU
Only one pin is asserted during any external data access
BBE1
D12
O/Z
IPU
EMIFB byte-enable control
Decoded from the low-order address bits. The number of address bits or byte enables
used depends on the width of external memory.
BBE0
E12
O/Z
IPU
used depends on the width of external memory.
Byte-write enables for most types of memory
Can be directly connected to SDRAM read and write mask signal (SDQM)
BPDT
E11
O/Z
IPU
EMIFB peripheral data transfer, allows direct transfer between external peripherals
EMIFB (16-BIT) BUS ARBITRATION||k
BHOLDA
F12
O
IPU
EMIFB hold-request-acknowledge to the host
BHOLD
C19
I
IPU
EMIFB hold request from the host
BBUSREQ
D14
O
IPU
EMIFB bus request output
EMIFB (16-BIT) ASYNCHRONOUS/SYNCHRONOUS MEMORY CONTROL||k
BECLKIN
E10
I
IPD
EMIFB external input clock. The EMIFB input clock (BECLKIN, CPU/4 clock, or CPU/6 clock)
is selected at reset via the pullup/pulldown resistors on the BEA[15:14] pins.
BECLKIN is the default for the EMIFB input clock.
BECLKOUT2
C8
O/Z
IPD
EMIFB output clock 2. Programmable to be EMIFB input clock (BECLKIN, CPU/4 clock, or
CPU/6 clock) frequency divided by 1, 2, or 4.
BECLKOUT1
J12
O/Z
IPD
EMIFB output clock 1 [at EMIFB input clock (BECLKIN, CPU/4 clock, or CPU/6 clock)
frequency].
BARE/
BSDCAS/
BSADS/BSRE
C7
O/Z
IPU
EMIFB asynchronous memory read-enable/SDRAM column-address strobe/programmable
synchronous interface-address strobe or read-enable
For programmable synchronous interface, the RENEN field in the CE Space Secondary
Control Register (CExSEC) selects between BSADS and BSRE:
If RENEN = 0, then the BSADS/BSRE signal functions as the BSADS signal.
If RENEN = 1, then the BSADS/BSRE signal functions as the BSRE signal.
BAOE/
BSDRAS/
BSOE
D10
O/Z
IPU
EMIFB asynchronous memory output-enable/SDRAM row-address strobe/programmable
synchronous interface output-enable
BAWE/BSDWE/
BSWE
F11
O/Z
IPU
EMIFB asynchronous memory write-enable/SDRAM write-enable/programmable synchro-
nous interface write-enable
BSOE3
J13
O/Z
IPU
EMIFB synchronous memory output enable for BCE3 (for glueless FIFO interface)
BARDY
G11
I
IPU
EMIFB asynchronous memory ready input
I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground
IPD = Internal pulldown, IPU = Internal pullup. (These IPD/IPU signal pins feature a 30-k IPD or IPU resistor. To pull up a signal to the opposite
supply rail, a 1-k
resistor should be used.)
|| These C64x devices have two EMIFs (64-bit EMIFA and 16-bit EMIFB). The prefix “A” in front of a signal name indicates it is an EMIFA signal
whereas a prefix “B” in front of a signal name indicates it is an EMIFB signal. Throughout the rest of this document, in generic EMIF areas of
discussion, the prefix “A” or “B” may be omitted from the signal name.
kTo maintain signal integrity for the EMIF signals, serial termination resistors should be inserted into all EMIF output signal lines.
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