PM4328-PI PMC-Sierra, Inc., PM4328-PI Datasheet - Page 204
![no-image](/images/no-image-200.jpg)
PM4328-PI
Manufacturer Part Number
PM4328-PI
Description
Framer, T1|E1|T3 Standard Format, 324-BGA
Manufacturer
PMC-Sierra, Inc.
Datasheet
1.PM4328-PI.pdf
(250 pages)
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STANDARD PRODUCT
DATASHEET
PMC-2011596
PROPRIETARY AND CONFIDENTIAL
CECLK
EFP[x]
CEFP
ED[x]
CECLK
EFP[x]
CEFP
The Egress Interface is configured for the Clock Master: Clear Channel mode by
writing to EMODE[2:0] in theT1/E1 Egress Serial Interface Mode Select register.
ED[x] is sampled on the rising edge of the ECLK[x] output. When the the EDE bit
in the T1/E1 Serial Interface Configuration register is set to logic 0, then ED[x] is
sampled on the falling edge of ECLK[x], and the functional timing is described by
Figure 63 with the ECLK[x] signal inverted.
Figure 64: T1 Egress Interface Clock Slave: EFP Enabled mode
Figure 65: E1 Egress Interface Clock Slave : EFP Enabled Mode
ED[x]
The Egress Interface is configured for the Clock Slave: EFP Enabled mode by
writing to EMODE[2:0] in theT1/E1 Egress Serial Interface Mode Select register.
ED[x] is sampled on the active edge of CECLK and EFP[x] is updated on the
falling edge of CECLK.
In T1 mode, Figure 64, the CEMFP bit is written to logic 1 in the Master Egress
Slave Mode Serial Interface Configuration register, so that CEFP must pulse
once every 12 or 24 frames (for SF and ESF, respectively) on the first frame bit
of the multiframe. If parity checking is enabled, a parity bit should be inserted on
ED[x] in the first bit of each frame. The EFP[x] output will pulse high to mark the
F-bit of each frame in order to indicate frame alignment to an upstream device.
EFP[x] may be configured to mark superframe alignment instead by setting the
EMFP bit in the T1/E1 Serial Interface Configuration register.
1 2 3 4 5 6 7 8 F 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
Channel 24
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
Timeslot 31
F-bit or Parity
(if enabled)
Parity bit
ISSUE 1
Channel 1
Timeslot 0
Channel 2
Timeslot 1
191
1
1 2 3 4 5 6 7 8 F 1 2 3 4 5 6 7 8
Channel 24
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
Timeslot 31
F-bit or Parity
(if enabled)
HIGH DENSITY T1/E1 FRAMER
Parity bit
AND M13 MULTIPLEXER
Channel 1
Timeslot 0
PM4328 TECT3
1
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