T8207-BAL-DT Agere Systems, Inc., T8207-BAL-DT Datasheet - Page 25

• Manufacturer Part Number: T8207-BAL-DT
• Description: CelXpres ATM interconnect. Dry-bagget, tape & reel .
• Manufacturer: Agere Systems, Inc.

Advance Data Sheet
September 2001
Agere Systems Inc.
6
6.3.2
The times represented in the following table reflect access times for various microprocessor interface reads and
writes. For direct access registers, the values represent the time until the rdy_dtack signal transitions indicating the
data transfer portion of the access is complete. For accesses to extended memory, the values represent the time
from the completion of a write to register 34h until the ext_strt_acc bit is cleared.
The actual times are dependent on the frequency of the pclk and mclk clocks (see Section 5, PLL Configuration).
The terms pclkp and mclkp in the table represent the period of pclk and mclk, respectively, in ns.
Table 10. Access Times
Read/Write to 28h—3Dh
Reads to:
Writes to:
Reads to Extended Memory
Writes to Extended Memory
Read from LUT SRAM
Write to LUT SRAM
Internal Structures
Internal Structures
(direct internal memory)
(direct internal memory)
60h—93h,
A0h—D7h,
E0h—FFh
60h—93h,
A0h—D7h,
E0h—FFh
Microprocessor Interface
CelXpres T8207 Access Performance
Description
4 x pclkp + 11 x mclkp
6 x pclkp + 3 x mclkp
6 x pclkp + 6 x mclkp
4 x pclkp
4 x pclkp
6 x pclkp
6 x pclkp
Min
(continued)
8 x pclkp + 12 x mclkp
8 x pclkp + 9 x mclkp
8 x pclkp + 4 x mclkp
8 x pclkp + 7 x mclkp
5 x pclkp
Typ
—
—
12 x pclkp + 15 x mclkp
12 x pclkp + 18 x mclkp
10 x pclkp + 12 x mclkp
10 x pclkp + 50 x mclkp
10 x pclkp + 50 x mclkp
10 x pclkp + 9 x mclkp
5 x pclkp + 30
Max
ATM Interconnect
CelXpres T8207
Unit
ns
ns
ns
ns
ns
ns
ns
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