參數(shù)資料
型號： DSP5685xUM
廠商： 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述： 16-bit Digital Signal Controllers
中文描述： 16位數(shù)字信號控制器
文件頁數(shù)： 47/60頁
文件大?。?/td> 836K
代理商： DSP5685XUM
Enhanced Synchronous Serial Interface (ESSI) Timing
56854 Technical Data, Rev. 6
Freescale Semiconductor
47
Delay from SCK high to SC2 (wl) high - Slave
5
t
TFSWHS
-1
—
29
ns
Delay from SC0 high to SC1 (bl) high - Slave
5
t
RFSBHS
-1
—
29
ns
Delay from SC0 high to SC1 (wl) high - Slave
5
t
RFSWHS
-1
—
29
ns
Delay from SCK high to SC2 (bl) low - Slave
5
t
TFSBLS
-29
—
29
ns
Delay from SCK high to SC2 (wl) low - Slave
5
t
TFSWLS
-29
—
29
ns
Delay from SC0 high to SC1 (bl) low - Slave
5
t
RFSBLS
-29
—
29
ns
Delay from SC0 high to SC1 (wl) low - Slave
5
t
RFSWLS
-29
—
29
ns
SCK high to STD enable from high impedance - Slave
t
TXES
—
—
15
ns
SCK high to STD valid - Slave
t
TXVS
4
—
15
ns
SC2 high to STD enable from high impedance (first bit) - Slave
t
FTXES
4
—
15
ns
SC2 high to STD valid (first bit) - Slave
t
FTXVS
4
—
15
ns
SCK high to STD not valid - Slave
t
TXNVS
4
—
15
ns
SCK high to STD high impedance - Slave
t
TXHIS
4
—
15
ns
SRD Setup time before SC0 low - Slave
t
SS
4
—
—
ns
SRD Hold time after SC0 low - Slave
t
HS
4
—
—
ns
Synchronous Operation (in addition to standard external clock parameters)
SRD Setup time before SCK low - Slave
t
TSS
4
—
—
ns
SRD Hold time after SCK low - Slave
t
THS
4
—
—
ns
1. Slave mode is externally generated clocks and frame syncs
2. Max clock frequency is IP_clk/4 = 60MHz / 4 = 15MHz for a 120MHz part.
3. All the timings for the ESSI are given for a non-inverted serial clock polarity (TSCKP=0 in SCR2 and RSCKP=0 in SCSR)
and a non-inverted frame sync (TFSI=0 in SCR2 and RFSI=0 in SCSR). If the polarity of the clock and/or the frame sync
have been inverted, all the timings remain valid by inverting the clock signal SCK/SC0 and/or the frame sync SC2/SC1 in
the tables and in the figures.
4. 50 percent duty cycle
5. bl = bit length; wl = word length
Table 4-12 ESSI Slave Mode
1
Switching Characteristics (Continued)
Operating Conditions: V
SS
= V
SSIO
= V
SSA
= 0 V, V
DD
= 1.62-1.98V, V
DDIO
= V
DDA
=
3.0–3.6V, T
A
= –40
°
to +120
°
C, C
L
≤
50pF, f
op
= 120MHz
Parameter
Symbol
Min
Typ
Max
Units
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