AK4170 Datasheet, PDF (2/10 Pages) Asahi Kasei Microsystems – USB TRANSCEIVER

[ASAHI KASEI]
[AK4170]
Pin/Function
No. Signal Name
1 NC
2 OEN
3 RDIFF
4 RSHP
5 RSHN
6 SUS
7 VSS
8 NC
9 NC
10 NC
11 FAST
12 DN
13 DP
14 INP
15 INN
16 VDD
I/O
Description
- Not Connected
I Output Enable Pin (CMOS level digital input)
Low input enables transmit data, it is that both INP and INN output onto DP and
DN pins. High input enable receive mode, which disables the outputs of DP and
DN, and the buffer goes into high-z state.
O Differential Receiver Output (CMOS level digital output)
When DP > DN, the output is “H”. When DP < DN, the output is “L”.
When both DP and DN are “L”, the output is not guaranteed.
this pin also outputs correctly regardless of the OEN input.
O Schmitt Hysteresis Receiver Output for DP (D+) input (CMOS level digital output)
When DP is high level, RSHP is high.
When DP is low level, RSHP is low
this pin also outputs correctly regardless of the OEN input.
O Schmitt Hysteresis Receiver Output for DN (D-) input (CMOS level digital output)
When DN is high level, RSHN is high.
When DN is low level, RSHN is low
this pin also outputs correctly regardless of the OEN input.
I Suspend Mode Control Pin (CMOS level)
High input forces the RDIFF output to low level, and the AK4170 goes into low
power consumption mode regardless of OEN pin.
P Ground Pin
- Not Connected
- Not Connected
- Not Connected
I Full Speed/Low Speed Control Input (CMOS digital input)
Low input activates the AK4170 to Low Speed (1.5Mbps) mode.
High input activates the AK4170 to Full Speed (12Mbps) mode.
I/O Transmitter/Receiver Negative Data Output/Input Pin
DN outputs the data of INN logic level when OEN is low
DN disable the output, and goes to high-z state when OEN is high.
I/O Transmitter/Receiver Positive Data Output/Input Pin
DP outputs the data of INP logic level when OEN is low
DP disable the output, and goes to high-z state when OEN is high.
I Transmitter Positive Data Input Pin (CMOS digital input)
When OEN is low, DP outputs INP logic level.
When OEN is high, INP does not influence output pins.
I Transmitter Negative Data Input Pin (CMOS digital input)
When OEN is low, DN outputs INN logic level.
When OEN is high, INN does not influence output pins.
- Power Supply Pin
Connected to VSS with a 0.1uF capacitor.
<M0066-E-01>
-2-
<1999/09>