ds26518 Maxim Integrated Products, Inc., ds26518 Datasheet - Page 45

• Manufacturer Part Number: ds26518
• Description: 8-port T1/e1/j1 Transceiver
• Manufacturer: Maxim Integrated Products, Inc.

Table 9-10. RSYNCn Input Pin Definitions (GTCR1.GIBO = 0)
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 DS26518 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:
RSYNC1
RSYNC2
RSYNC3
RSYNC4
RSYNC5
RSYNC6
RSYNC7
RSYNC8
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.
Receive Frame Pulse
Receive Frame Pulse
Receive Frame Pulse
Receive Frame Pulse
Receive Frame Pulse
Receive Frame Pulse
Receive Frame Pulse
Receive Frame Pulse
NORMAL USE
for Port 1
for Port 2
for Port 3
for Port 4
for Port 5
for Port 6
for Port 7
for Port 8
Receive Frame Pulse
Receive Frame Pulse
Receive Frame Pulse
Receive Frame Pulse
for Ports 1 and 2
for Ports 3 and 4
for Ports 5 and 6
for Ports 7 and 8
4.096MHz IBO
Unused
Unused
Unused
Unused
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Receive Frame Pulse
Receive Frame Pulse
8.192MHz IBO
for Ports 1–4
for Ports 5–8
Unused
Unused
Unused
Unused
Unused
Unused
DS26518 8-Port T1/E1/J1 Transceiver
Receive Frame Pulse
16.384MHz IBO
for Ports 1–8
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Figure 9-14