dsp56852 Freescale Semiconductor, Inc, dsp56852 Datasheet - Page 35

• Manufacturer Part Number: dsp56852
• Description: 56800e 16-bit Digital Signal Controllers Digital Signal Controller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
Operating Conditions: V
STCK frequency
STCK period
STCK high time
STCK low time
Output clock rise/fall time
Delay from STCK high to STFS (bl) high - Slave
Delay from STCK high to STFS (wl) high - Slave
Delay from SRCK high to SRFS (bl) high - Slave
Delay from SRCK high to SRFS (wl) high - Slave
Delay from STCK high to STFS (bl) low - Slave
Delay from STCK high to STFS (wl) low - Slave
Delay from SRCK high to SRFS (bl) low - Slave
Delay from SRCK high to SRFS (wl) low - Slave
STCK high to STXD enable from high impedance - Slave
STCK high to STXD valid - Slave
STFS high to STXD enable from high impedance (first bit) -
Slave
STFS high to STXD valid (first bit) - Slave
STCK high to STXD not valid - Slave
STCK high to STXD high impedance - Slave
SRXD Setup time before SRCK low - Slave
3
SS
Table 4-12 SSI Slave Mode
= V
SSIO
Parameter
= V
SSA
= 0V, V
DD
56852 Technical Data, Rev. 8
= 1.62-1.98V, V
5
5
5
5
5
5
5
5
DDIO
1
Switching Characteristics
= V
DDA
= 3.0–3.6V, T
Symbol
t
t
t
t
t
t
t
t
RFSWHS
TFSWHS
RFSWLS
TFSBHS
RFSBHS
TFSWLS
t
t
t
TFSBLS
RFSBLS
t
t
t
t
t
t
TXNVS
FTXES
FTXVS
SCKW
TXHIS
SCKH
SCKL
TXES
TXVS
t
fs
SS
A
= –40° to +120°C, C
33.4
33.4
Min
66.7
-29
-29
-29
-29
Synchronous Serial Interface (SSI) Timing
—
-1
-1
-1
-1
4
4
4
4
4
4
4
4
Typ
4
L
≤ 50pF, f
Max
15
29
29
29
29
29
29
29
29
15
15
15
15
15
15
—
2
op
= 120MHz
Units
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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