参数资料
型号: TMP320C6202BPYP167
厂商: Texas Instruments, Inc.
元件分类: 数字信号处理
英文描述: FIXED-POINT DIGITAL SIGNAL PROCESSORS
中文描述: 定点数字信号处理器
文件页数: 67/83页
文件大小: 1176K
代理商: TMP320C6202BPYP167
TMS320C6211, TMS320C6211B
FIXED-POINT DIGITAL SIGNAL PROCESSORS
SPRS073K
AUGUST 1998
REVISED MARCH 2004
67
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251
1443
MULTICHANNEL BUFFERED SERIAL PORT TIMING
timing requirements for McBSP
(see Figure 37)
NO.
150
167
UNIT
MIN
2P
§
MAX
2
3
t
c(CKRX)
t
w(CKRX)
Cycle time, CLKR/X
Pulse duration, CLKR/X high or CLKR/X low
CLKR/X ext
CLKR/X ext
CLKR int
CLKR ext
CLKR int
CLKR ext
CLKR int
CLKR ext
CLKR int
CLKR ext
CLKX int
CLKX ext
CLKX int
CLKX ext
ns
ns
0.5t
c(CKRX)
1
5
t
su(FRH-CKRL)
Setup time external FSR high before CLKR low
Setup time, external FSR high before CLKR low
20
1
6
3
22
3
3
4
23
1
6
3
ns
6
t
h(CKRL-FRH)
Hold time external FSR high after CLKR low
Hold time, external FSR high after CLKR low
ns
7
t
su(DRV-CKRL)
Setup time DR valid before CLKR low
Setup time, DR valid before CLKR low
ns
8
t
h(CKRL-DRV)
Hold time DR valid after CLKR low
Hold time, DR valid after CLKR low
ns
10
t
su(FXH-CKXL)
Setup time external FSX high before CLKX low
Setup time, external FSX high before CLKX low
ns
11
t
h(CKXL-FXH)
Hold time external FSX high after CLKX low
Hold time, external FSX high after CLKX low
ns
CLKRP = CLKXP = FSRP = FSXP = 0. If polarity of any of the signals is inverted, then the timing references of that signal are also inverted.
P = 1/CPU clock frequency in ns. For example, when running parts at 167 MHz, use P = 6 ns.
§
The minimum CLKR/X period is twice the CPU cycle time (2P). This means that the maximum bit rate for communications between the McBSP
and other device is 83 Mbps for 167 MHz CPU clock or 75 Mbps for 150 MHz CPU clock; where the McBSP is either the master or the slave.
Care must be taken to ensure that the AC timings specified in this data sheet are met. The maximum bit rate for McBSP-to-McBSP
communications is 33 Mbps; therefore, the minimum CLKR/X clock cycle is either twice the CPU cycle time (2P), or 30 ns (33 MHz), whichever
value is larger. For example, when running parts at 167 MHz (P = 6 ns), use 30 ns as the minimum CLKR/X clock cycle (by setting the appropriate
CLKGDV ratio or external clock source). When running parts at 60 MHz (P = 16.67 ns), use 2P = 33 ns (30 MHz) as the minimum CLKR/X clock
cycle. The maximum bit rate for McBSP-to-McBSP communications applies when the serial port is a master of the clock and frame syncs (with
CLKR connected to CLKX, FSR connected to FSX, CLKXM = FSXM = 1, and CLKRM = FSRM = 0) in data delay 1 or 2 mode (R/XDATDLY =
01b or 10b) and the other device the McBSP communicates to is a slave.
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