ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 319

• Manufacturer Part Number: ibm3206k0424
• Description: Ibm Processor For Network Resources
• Manufacturer: ETC-unknow

Preliminary
11.16: SEGBF Instruction SRAM Data
This register address can be used to read/write the instruction data that is needed by the segmentation
processors. All instructions must be written before the processors can be brought out of the halt state.
Length
Type
Address
Power On Value
Restrictions
11.17: MPEG-2 PCR Increment Register
Each tick of the time base will add the contents of this register to the MPEG PCR Reference Register. This
register contains a fixed point number with 27 bits of fraction and five bits of units. This means that the exter-
nal reference clock can range in speed from 22.5 Khz to the maximum speed of this entity which is TBD.
Assuming that the entity will run with a 50 Mhz clock, the conversion to 720Khz can be done with an accuracy
of 1.1 parts in two million. (A clock of 19.4 Mhz will give a conversion accuracy of one part in 4.9 million.) If the
input clock is 19.4 Mhz, then the value to put in the increment register is (720,000 / 19,400,000) * 2**27 or
4,981,277. If the input clock is 33 Mhz, then the value to put in the increment register is (720,000 /
16,666,666) * 2**27 or 5,798,206.
Length
Type
Address
Power On Value
Restrictions
pnr25.chapt05.01
August 14, 2000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31-27
Bit(s)
26-0
Units
These bits contain the whole part of the increment value.
These bits contain the fractional part of the increment value.
16
Read/Write
XXXX 14CC
Undefined
This array can only be accessed when the processors are in the halt state. Reads
attempted when the processor is in run mode will return invalid data. Writes
attempted when the processor is in run mode will be ignored.
32
Read/Write
XXXX 1468
X’002C3C9F’ (33 Mhz)
None
Description
Fraction
IBM Processor for Network Resources
ATM Transmit Buffer Segmentation (SEGBF)
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