SPD6729QCE Intel, SPD6729QCE Datasheet - Page 87

• Manufacturer Part Number: SPD6729QCE
• Description: PCI To PC Card (PCMCIA) Controller 208-Pin MQFP
• Manufacturer: Intel

Specifications of SPD6729QCE

• Package: 208MQFP
• Operating Temperature: 0 to 70 °C

11.0
11.1
Datasheet
Register Name: Setup Timing 0-1
Index: 3Ah, 3Dh
Setup Prescalar Select
Bit
7
RW:00
Timing Registers
The following information about the timing registers is important:
Setup Timing 0-1
There are two separate Setup Timing registers, each with identical fields. These registers are
located at the following indexes:
The Setup Timing register for each timer set controls how long a PCMCIA cycle’s command (that
is, -OE, -WE, -IORD, -IOWR; see
of internal clock cycles.
The overall command setup timing length S is programmed by selecting a 2-bit prescaling value
(bits 7-6 of this register) representing weights of 1, 16, 256, or 4096, and then selecting a multiplier
value (bits 5-0) to which that prescalar is multiplied to produce the overall command setup timing
length according to the following formula:
The value of S, representing the number of clock cycles for command setup, is then multiplied by
the clock period of the internal clock driving the PC card socket interface to determine the actual
command setup time (see
discussion).
Bits 5-0: Setup Multiplier Value
This field indicates an integer value N
7-6) to control the length of setup time before a command becomes active.
•
•
Bit
All timing registers take effect immediately and should only be changed when the FIFO is
empty (see
Selection of Timer Set 0 or Timer Set 1 register sets is controlled by I/O Window Control,
bits 3 and 7 (see
6
Index
3Ah
3Dh
“FIFO Control” on page
Bit
(Socket A)Setup Timing
Setup Timing 0
Setup Timing 1
S = (N
5
“Bit 3: Timing Register Select 0” on page
pres
“PCMCIA Bus Timing Calculations” on page 101
N
Bit
val
)
4
Table 2 on page
val
1
71).
from 0 to 63; it is combined with a prescalar value (bits
PCI-to-PC Card (PCMCIA) Controller — PD6729
Setup Multiplier Value
Bit
3
RW:000001
18) setup time will be, in terms of the number
Bit
60).
2
Register Compatibility Type: 365
Bit
for further
1
Register Per: socket
Bit
0
87