参数资料
型号: XRM48L950ZWTT
厂商: Texas Instruments
文件页数: 19/176页
文件大小: 0K
描述: MCU 16/32Bit FLASH 3MB 337NFBGA
标准包装: 1
系列: Hercules™ ARM® RM4x
应用: 工业安全,医疗
核心处理器: ARM? Cortex? - R4F
程序存储器类型: 闪存(3MB)
控制器系列: RM4
RAM 容量: 256K x 8
接口: CAN,以太网,I²C,LIN,MibSPI,SCI,SPI,USB
输入/输出数: 120
电源电压: 1.14 V ~ 3.6 V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 337-LFBGA
包装: 托盘
供应商设备封装: 337-NFBGA(16x16)
其它名称: 296-29390
t
r(ETM)
t
h(ETM)
t
l(ETM)
t
f(ETM)
t
cyc(ETM)
SPNS174A – APRIL 2012 – REVISED SEPTEMBER 2013
4.21.7 Embedded Trace Macrocell (ETM-R4)
The device contains a ETM-R4 module with a 32-bit internal data port. The ETM-R4 module is connected
to a TPIU with a 32-bit data bus; the TPIU provides a 35-bit (32-bit data, 3-bit control) external interface
for trace. The ETM-R4 is CoreSight compliant and follows the ETM v3 specification; for more details see
ARM CoreSight ETM-R4 TRM specification.
4.21.7.1 ETM TRACECLKIN Selection
The ETM clock source can be selected as either VCLK or the external ETMTRACECLKIN pin. The
selection is done by the EXTCTRLOUT[1:0] control bits of the TPIU; the default is '00'. The address of this
register is TPIU base address + 0x404.
Before you begin accessing TPIU registers, TPIU should be unlocked via coresight key and 1 or 2 should
be written to this register.
Table 4-41. TPIU / TRACECLKIN Selection
EXTCTRLOUT[1:0]
TPIU/TRACECLKIN
00
tied-zero
01
VCLK
10
ETMTRACECLKIN
11
tied-zero
4.21.7.2 Timing Specifications
Figure 4-22. ETMTRACECLKOUT Timing
Table 4-42. ETMTRACECLK Timing
Parameter
MIN
MAX
Description
tcyc(ETM)
t(HCLK) * 4
Clock period
tl(ETM)
20ns
Low pulse width
th(ETM)
20ns
High pulse width
tr(ETM)
3ns
Clock and data rise time
tf(ETM)
3ns
Clock and data fall time
Copyright 2012–2013, Texas Instruments Incorporated
System Information and Electrical Specifications
115
Product Folder Links: RM48L950 RM48L750 RM48L550
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