zl50058 Zarlink Semiconductor, zl50058 Datasheet - Page 68
zl50058
Manufacturer Part Number
zl50058
Description
12 K Channel Digital Switch With High Jitter Tolerance, Per Stream Rate Conversion 2, 4, 8, 16 Or 32 Mbps , 48 Input And 48 Output Streams
Manufacturer
Zarlink Semiconductor
Datasheet
1.ZL50058.pdf
(108 pages)
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14.2
Address 0001
The Block Programming Register stores the bit patterns to be loaded into the connection memories when the
Memory Block Programming feature is enabled. The BPE, LBPD[2:0] and BBPD[2:0] bits in the BPR register must
be defined in the same write operation.
The BPE bit is set HIGH to commence the block programming operation. Programming is completed in one frame
period and may be initiated at any time within a frame. The BPE bit returns to LOW to indicate that the block
programming function has completed.
When BPE is HIGH, no other bits of the BPR register may be changed for at least a single frame period, except to
abort the programming operation. The programming operation may be aborted by setting either BPE to LOW, or the
Control Register bit, MBP, to LOW.
The BPR register is configured as follows.
15:7
6:4
3:1
Bit
0
Block Programming Register (BPR)
BBPD[2:0]
LBPD[2:0]
Reserved
Name
BPE
H
.
Reset
Value
0
0
0
0
Reserved
Must be set to 0 for normal operation
Backplane Block Programming Data
These bits refer to the value loaded into the Backplane Connection Memory
(BCM) when the Memory Block Programming feature is activated.
When the MBP bit in the Control Register (CR) is set HIGH and BPE (in this
register) is set HIGH, the contents of bits BBPD[2:0] are loaded into bits 15-13,
respectively, of the BCM. Bits 12-0 of the BCM are set LOW.
Local Block Programming Data
These bits refer to the value loaded into the Local Connection Memory (LCM),
when the Memory Block Programming feature is activated.
When the MBP bit in the Control Register is set HIGH and BPE (in this register)
is set HIGH, the contents of bits LBPD[2:0] are loaded into bits 15-13,
respectively, of the LCM. Bits 12-0 of the LCM are set LOW.
Block Programming Enable
A LOW to HIGH transition of this bit enables the Memory Block Programming
function. A LOW will be returned after 125 µs, upon completion of programming.
Set LOW to abort the programming operation.
Table 22 - Block Programming Register Bits
Zarlink Semiconductor Inc.
ZL50057/8
68
Description
Data Sheet
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