cl-ps6700 Cirrus Logic, Inc., cl-ps6700 Datasheet - Page 29

• Manufacturer Part Number: cl-ps6700
• Description: Low-power Pc Card Controller For The Cl-ps7111
• Manufacturer: Cirrus Logic, Inc.

CL-PS6700
Low-Power PC Card Controller
4.5.2 Card Interface Timing Register 0A
4.5.3 Card Interface Timing Register 0B
November 1997
Bit(s)
Bit(s)
15:14
15:14
13:8
13:8
7:6
5:0
7:6
5:0
Description
Prescaler Field for Watchdog Timer.
00 – Divide by 1
01 – Divide by 16
10 – Divide by 256
11 – Divide by 8192
Count Field for Watchdog Timer. Settings of 00 to 3Fh correspond to values between 1 and
64 times the prescale value. The period starts at the end of the command width period and
continues as long as PCM_WAIT_L is low. If terminal count is reached, an interrupt can be
generated.
Prescaler Field for Command Strobe Width.
00 – Divide by 1
01 – Divide by 16
10 – Divide by 256
11 – Divide by 8192
Count Field for Command Strobe Width. This field has values between 1 and 64. The com-
mand width equals:
t
Description
Prescaler Field for Address and Data Hold Time.
00 – Divide by 1
01 – Divide by 16
10 – Divide by 256
11 – Divide by 8192
Count Field for Hold Period. Settings of 00 to 3Fh correspond to 1 to 64 times the prescale
value. The period starts at the end of the command strobe. The hold time equals:
t
Prescaler Field for Address and Data Setup Time.
00 – Divide by 1
01 – Divide by 16
10 – Divide by 256
11 – Divide by 8192
Count Field for Address and Data Setup Time. Settings of 00 to 3Fh correspond to 1 to 64
times the prescale value. The period starts at valid address and ends when the command
strobe is active. The setup time equals:
t
CMD
Hold
setup
= t
= t
= t
PCLK
PCLK
PCLK
PRELIMINARY DATA BOOK v1.0
C
([Prescale
([Prescale
([Prescale
I R R U S
L
O G I C
Count] + 1) + constant
Count] + 1)
Count] + 2)
C
O N F I D E N T I A L
(0X0C003000
(0X0C003400
constant
, N D A R
)
)
E Q U I R E D
REGISTERS
Default R/W
Default R/W
1Fh
00h
00h
00
00
00
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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