DS26514G Maxim Integrated, DS26514G Datasheet - Page 45

• Manufacturer Part Number: DS26514G
• Description: Network Controller & Processor ICs
• Manufacturer: Maxim Integrated

Specifications of DS26514G

• Part # Aliases: 90-26514-G00

9.8.3 H.100 (CT Bus) Compatibility
The H.100 (or CT bus) is a synchronous, bit-serial, TDM transport bus operating at 8.192MHz. The H.100 standard
also allows compatibility modes to operate at 2.048MHz, 4.096MHz, or 8.192MHz. The control bit H100EN
(RIOCR.5), when combined with RSYNCINV and TSSYNCINV, allows the DS26514 to accept a CT-bus-
compatible frame-sync signal (CT_FRAME) at the RSYNCn and TSSYNCIOn (input mode) inputs. See
and
The following rules apply to the H100EN control bit:
19-5856; Rev 4; 5/11
Table 9-10. RSYNC Input Pin Definitions (GTCR1.GIBO = 0)
RSYNC1
RSYNC2
RSYNC3
RSYNC4
NAME
Figure
PIN
1) The H100EN bit controls the sampling point for the RSYNCn (input mode) and TSSYNCIOn (input
2) The H100EN bit would always be used in conjunction with the receive and transmit elastic store
3) The H100EN bit would typically be used with 8.192MHz IBO mode, but could also be used with
4) The H100EN bit in RIOCR controls both RSYNCn and TSSYNCIOn (i.e., there is no separate control
5) The H100EN bit does not invert the expected signal; RSYNCINV (RIOCR) and TSSYNCINV (TIOCR)
9-15.
mode) only. The RSYNCn output and other sync signals are not affected.
buffers.
4.096MHz IBO mode or 2.048MHz backplane operation.
bit for the TSSYNCIOn).
must be set high to invert the inbound sync signals.
Rx Frame Pulse for
Rx Frame Pulse for
Rx Frame Pulse for
Rx Frame Pulse for
NORMAL USE
port # 1
port # 2
port # 3
port # 4
Rx Frame Pulse for
Rx Frame Pulse for
4.096MHz IBO
Ports 1 & 2
Ports 3 & 4
Unused
Unused
Rx Frame Pulse for
8.192MHz IBO
Ports 1, 2, 3, & 4
Unused
Unused
Unused
DS26514 4-Port T1/E1/J1 Transceiver
Rx Frame Pulse for
16.384MHz IBO
Ports 1, 2, 3, & 4
Unused
Unused
Unused
Figure 9-14
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