参数资料
型号: TMX320R2812ZHHQ
厂商: Texas Instruments, Inc.
元件分类: 数字信号处理
英文描述: TMS320R2811, TMS320R2812 Digital Signal Processors
中文描述: TMS320R2811,TMS320R2812数字信号处理器
文件页数: 19/147页
文件大小: 2021K
代理商: TMX320R2812ZHHQ
Introduction
19
June 2004
SPRS257
Table 2
2. Signal Descriptions
(Continued)
NAME
DESCRIPTION
PU/PD
§
I/O/Z
PIN NO.
128-PIN
PBK
176-PIN
PGF
179-PIN
GHH
AND
ZHH
XINTF SIGNALS (2812 ONLY) (CONTINUED)
XMP/MC
F1
17
I
PD
Microprocessor/Microcomputer Mode Select. Switches
between microprocessor and microcomputer mode. When
high, Zone 7 is enabled on the external interface. When low,
Zone 7 is disabled from the external interface, and on-chip
boot ROM may be accessed instead. This signal is latched
into the XINTCNF2 register on a reset and the user can modify
this bit in software. The state of the XMP/MC pin is ignored
after reset.
XHOLD
E7
159
I
PU
External Hold Request. XHOLD, when active (low), requests
the XINTF to release the external bus and place all buses and
strobes into a high-impedance state. The XINTF will release
the bus when any current access is complete and there are no
pending accesses on the XINTF.
XHOLDA
K10
82
O/Z
External Hold Acknowledge. XHOLDA is driven active (low)
when the XINTF has granted a XHOLD request. All XINTF
buses and strobe signals will be in a high-impedance state.
XHOLDA is released when the XHOLD signal is released.
External devices should only drive the external bus when
XHOLDA is active (low).
XINTF Zone 0 and Zone 1 Chip Select. XZCS0AND1 is active
(low) when an access to the XINTF Zone 0 or Zone 1 is
performed.
XZCS0AND1
P1
44
O/Z
XZCS2
P13
88
O/Z
XINTF Zone 2 Chip Select. XZCS2 is active (low) when an
access to the XINTF Zone 2 is performed.
XZCS6AND7
B13
133
O/Z
XINTF Zone 6 and Zone 7 Chip Select. XZCS6AND7 is active
(low) when an access to the XINTF Zone 6 or Zone 7 is
performed.
XWE
N11
84
O/Z
Write Enable. Active-low write strobe. The write strobe
waveform is specified, per zone basis, by the Lead, Active,
and Trail periods in the XTIMINGx registers.
XRD
M3
42
O/Z
Read Enable. Active-low read strobe. The read strobe
waveform is specified, per zone basis, by the Lead, Active,
and Trail periods in the XTIMINGx registers. NOTE: The XRD
and XWE signals are mutually exclusive.
Read Not Write Strobe. Normally held high. When low, XR/W
indicates write cycle is active; when high, XR/W indicates read
cycle is active.
XR/W
N4
51
O/Z
Typical drive strength of the output buffer for all pins is 4 mA except for TDO, XCLKOUT, XF, XINTF, EMU0, and EMU1 pins, which are 8 mA.
I = Input, O = Output, Z = High impedance
§
PU = pin has internal pullup; PD = pin has internal pulldown
A
相关PDF资料
PDF描述
TMX320R2812ZHHS TMS320R2811, TMS320R2812 Digital Signal Processors
TMP320R2811ZHHA TMS320R2811, TMS320R2812 Digital Signal Processors
TMP320R2811ZHHQ TMS320R2811, TMS320R2812 Digital Signal Processors
TMP320R2811ZHHS TMS320R2811, TMS320R2812 Digital Signal Processors
TMP320R2812GHHA TMS320R2811, TMS320R2812 Digital Signal Processors
相关代理商/技术参数
参数描述
TMX320R2812ZHHS 制造商:TI 制造商全称:Texas Instruments 功能描述:TMS320R2811, TMS320R2812 Digital Signal Processors
TMX320TCI100BGLZ7 制造商:Texas Instruments 功能描述:
TMX320TCI100GLZ 制造商:Texas Instruments 功能描述:
TMX320TCI100ZLZ6 制造商:Texas Instruments 功能描述:
TMX320TCI100ZLZ6N 制造商:Texas Instruments 功能描述: