参数资料
型号: RM48L950PGET
厂商: TEXAS INSTRUMENTS INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, FLASH, 200 MHz, RISC MICROCONTROLLER, PQFP144
封装: GREEN, PLASTIC, LQFP-144
文件页数: 19/154页
文件大小: 2807K
代理商: RM48L950PGET
PRODUCTPREVIEW
HCLK
DMMCLK
DMMSYNC
DMMDATA
DMMnENA
D00
D01
D10
D11
D20
D21
D30
D31
D40
D41
D50
SPNS174
– SEPTEMBER 2011
Table 4-47. DMMDATA Timing
Parameter
MIN
Description
tssu(DMM)
2ns
SYNC active to clk falling edge setup time
tsh(DMM)
3ns
clk falling edge to SYNC deactive hold time
tdsu(DMM)
2ns
DATA to clk falling edge setup time
tdh(DMM)
3ns
clk falling edge to DATA hold time
Figure 4-29. DMMnENA Timing
Figure 4-29 shows a case with 1 DMM packet per 2 DMMCLK cycles (Mode = Direct Data Mode, data
width = 8, portwidth = 4) where none of the packets received by the DMM are sent out, leading to filling up
of the internal buffers. The DMMnENA signal is shown asserted, after the first two packets have been
received and synchronised to the HCLK domain. Here, the DMM has the capacity to accept packets D4x,
D5x, D6x, D7x. Packet D8 would result in an overflow. Once DMMnENA is asserted, the DMM expects to
stop receiving packets after 4 HCLK cycles; once DMMnENA is de-asserted, the DMM can handle
packets immediately (after 0 HCLK cycles).
Copyright
2011, Texas Instruments Incorporated
System Information and Electrical Specifications
115
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