ADVANCE
INFORMATION
Parameter
tclk
thigh
tlow
trise
tfall
Description
Clock Period (48 MHz)
Clock HIGH Time
Clock LOW Time
Clock Rise Time
Clock Fall Time
Duty Cycle
鈥?%
Min.
20.0 ns
9 ns
9 ns
Typical
20.8 ns
CS5954AM
Max.
11 ns
11 ns
5.0 ns
5.0 ns
+5%
9.9
CS5954AM SRAM Read Cycle
Address
CS
t
AR
t
CR
RD
t
RPW
t
CDH
t
AC
t
RDH
Din
Data Valid
Parameter
t
CR
t
RDH
t
CDH
t
RPW[46]
t
AR
t
AC[47]
Description
CS LOW to RD LOW
RD HIGH to data hold
CS HIGH to Data Hold
RD LOW Time
RD LOW to Address Valid
RAM Access to Data Valid
Min.
1 ns
5 ns
3 ns
28 ns
1 ns
Typical
Max.
31 ns
3 ns
12 ns
Notes:
46. 0 wait state cycle.
47. t
AC
means at 0 wait states, with PCLK = 2/3 RCLK, the SRAM access time should be 12 ns max. For a 1-wait state cycle, with PCLK = 2/3 RCLK, the SRAM
access time should be at 12 + 31ns = 43 ns max. See register 0xC006 description for PCLK information.
Document #: 38-08025 Rev. **
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