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SP507 Datasheet, PDF (17/28 Pages) Sipex Corporation – +5V, Single Chip WAN Multi-Mode Serial Transceiver | |||
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Pin 45 â RL(b) â Remote Loopback; analog
output, non-inverted; sourced from RL.
Pin 47 â RL(a) â Remote Loopback;
analog output inverted; sourced from RL.
Pin 49â LL(b) â Local Loopback; analog
output, non-inverted; sourced from LL.
Pin 51 â LL(a) â Local Loopback; analog
output, inverted; sourced from LL.
Pin 52 â RS(b) â Ready To Send; analog
output, non-inverted; sourced from RTS.
Pin 54 â RS(a) â Ready To Send; analog
output, inverted; sourced from RTS.
Pin 56 â TR(b) â Terminal Ready; analog
output, non-inverted; sourced from DTR.
Pin 58 â TR(a) â Terminal Ready; analog
output, inverted; sourced from DTR.
Pin 66 â CS(a)â Clear To Send; analog
input, inverted; source for CTS.
Pin 67 â CS(b)â Clear To Send; analog
input, non-inverted; source for CTS.
Pin 68 â DM(a)â Data Mode; analog input,
inverted; source for DSR.
Pin 69 â DM(b)â Data Mode; analog input,
non-inverted; source for DSR
Pin 78 â DSRâ Data Set Ready; TTL
output; sourced from DM(a) and DM(b) in-
puts.
Pin 80 â CTSâ Clear To Send; TTL output;
sourced from CS(a) and CS(b) inputs.
CONTROL REGISTERS
Pin 2 â RTEN â Enables RxC receiver,
active low; TTL input.
Pin 3 â RREN â Enables DCD receiver,
active low; TTL input.
Pin 4 â TMEN â Enables TM receiver,
active high; TTL input.
Pin 5 â LLEN â Enables LL driver, active
low; TTL input.
Pin 6 â TTEN â Enables TxCE driver,
active high; TTL input.
Pin 7 â SCTEN â Enables DTE_ST re-
ceiver; active low; TTL input.
Pin 8 â LATCH â Latch control for decoder
bits (pins 10-12), active low. Logic high input
will make decoder transparent.
Pin 9 â TERM_OFF â Disables receiver
termination networks for RxD, RxC, and
DTE_ST; TTL input.
Pins 10,11, 12 â M2, M1, M0 â Transmitter
and receiver decode register; configures
transmitter and receiver modes; TTL inputs.
Pin 18 â RLEN â Enables RL driver; active
high; TTL input.
Pin 23 â STEN â Enables DTE_ST driver;
active high; TTL input.
POWER SUPPLIES
Pins 25, 33, 41, 48, 55, 62, 73, 74 â VCC â
+5V input.
Pins 29, 34, 43, 46, 50, 53, 57, 60, 64, 72,
75 â GND â Ground.
Pin 27 â VDD +10V Charge Pump Capacitor
â Connects from VDD to VCC. Suggested
capacitor size is 22µF, 16V.
Pin 32 â VSS â10V Charge Pump Capacitor
â Connects from ground to VSS. Suggested
capacitor size is 22µF, 16V.
Pins 26 and 30
Pump Capacitor
â
â
CCo1+nnaencdtsCf1roâ mâC1C+htoaCrg1eâ
.
Suggested capacitor size is 22µF, 16V.
Pins 28 and 31
Pump Capacitor
â
â
CCo2+nnaencdtsCf2roâ mâC2C+htoaCrg2eâ
.
Suggested capacitor size is 22µF, 16V.
SP507_100_081208
SP507 MultiâMode Serial Transceiver
17
© Copyright 2008 Exar Corporation
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