ds21ft40 Maxim Integrated Products, Inc., ds21ft40 Datasheet - Page 4

• Manufacturer Part Number: ds21ft40
• Description: Ds21ft40 Four X Three 12 Channel E1 Framer
• Manufacturer: Maxim Integrated Products, Inc.

DS21FT40 Schematic Figure 1-1 (continued)
Changes in DS21FT40 compared to DS21FT44 Table 1-1
1. The SYSCLK pins have been separated into TSYSCLK and RSYSCLK pins.
2. RMSYNC pins have been added.
3. FMS tied to Vdd.
4. The following signals are not available:
RSIG / TSIG / 8MCLK / CLKSI / JTRST* / JTMS / JTCLK / JTDI / JTDO
See Connecting Page
TLINK0/1/2/3
TEST
MUX
BTS
FS0/FS1
WR*
RD*
A0 to A7
D0 to D7
CS*
INT*
DVSS
DVSS
DS21Q44 # 3
Signals Not Connected &
Left Open Circuited Include:
RLOS/LOTC
RLINK
RLCLK
RCHBLK
RCHCLK
RFSYNC
TLCLK
TCHCLK
TCHBLK
RSIG
TSIG
8MCLK
CLKSI
JTRST*
JTMS
JTCLK
JTDI
JTDO
4 of 87
RSYSCLK9/10/11/12
TSYSCLK9/10/11/12
RMSYNC9/10/11/12
TSSYNC9/10/11/12
RSYNC9/10/11/12
TSYNC9/10/11/12
RPOS9/10/11/12
RNEG9/10/11/12
RSER9/10/11/12
TPOS9/10/11/12
TNEG9/10/11/12
RCLK9/10/11/12
TSER9/10/11/12
TCLK9/10/11/12
DVDD
FMS
DS21FT40