DS26528G Maxim Integrated Products, DS26528G Datasheet - Page 202
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DS26528G
Manufacturer Part Number
DS26528G
Description
Network Controller & Processor ICs Octal E1-T1-J1 Singl e-Chip Transceiver (
Manufacturer
Maxim Integrated Products
Datasheet
1.DS26528G.pdf
(276 pages)
Specifications of DS26528G
Product
Framer
Number Of Transceivers
8
Supply Voltage (max)
3.465 V
Supply Voltage (min)
3.135 V
Supply Current (max)
875 mA
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Package / Case
TE-CSBGA
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Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Note: Bits 7 and 6 are used for fractional backplane support. See Section 8.8.5.
Bit 7: Transmit Channel Data Format (TDATFMT).
Bit 6: Transmit Gapped-Clock Enable (TGCLKEN).
Bit 4: Transmit Slip Zone Select (TSZS). This bit determines the minimum distance allowed between the elastic
store read and write pointers before forcing a controlled slip. This bit is only applies during T1-to-E1 or E1-to-T1
conversion applications.
Bit 3: Transmit Elastic Store Align (TESALGN). Setting this bit from 0 to 1 will force the transmit elastic store’s
write/read pointers to a minimum separation of half a frame. No action will be taken if the pointer separation is
already greater or equal to half a frame. If pointer separation is less than half a frame, the command will be
executed and the data will be disrupted. Should be toggled after TSYSCLK has been applied and is stable. Must
be cleared and set again for a subsequent align.
Bit 2: Transmit Elastic Store Reset (TESR). Setting this bit from 0 to 1 will force the read pointer into the same
frame that the write pointer is exiting, minimizing the delay through the elastic store. If this command should place
the pointers within the slip zone (see bit 4), then an immediate slip will occur and the pointers will move back to
opposite frames. Should be toggled after TSYSCLK has been applied and is stable. Do not leave this bit set HIGH.
Bit 1: Transmit Elastic Store Minimum-Delay Mode (TESMDM).
Bit 0: Transmit Elastic Store Enable (TESE).
0 = 64kbps (data contained in all 8 bits)
1 = 56kbps (data contained in 7 out of the 8 bits)
0 = TCHCLK functions normally
1 = enable gapped bit clock output on TCHCLK
0 = force a slip at 9 bytes or less of separation (used for clustered blank channels)
1 = force a slip at 2 bytes or less of separation (used for distributed blank channels)
0 = elastic stores operate at full two-frame depth
1 = elastic stores operate at 32-bit depth
0 = elastic store is bypassed
1 = elastic store is enabled
TDATFMT
7
0
TGCLKEN
TESCR
Transmit Elastic Store Control Register
185h + (200h x n): where n = 0 to 7, for Ports 1 to 8
6
0
—
5
0
202 of 276
TSZS
4
0
TESALGN
3
0
DS26528 Octal T1/E1/J1 Transceiver
TESR
2
0
TESMDM
1
0
TESE
0
0
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