User Guide

PAMS
Technical Documentation
NSE–5
System Module
Page 2 – 10
Issue 1 07/99
Table 3. System/IBI connector (continued)
DescriptionUnitMaxTypMinFunctionNameIB-
pin
Pin
13 Yes FBUS
_TX
Serial
data out
(f
0.1 0.8 V Output low voltage @ I
OL

4 mA (ref. GND)
_
da a u
(from
phone to
accesso-
1.7 2.8 V Output high voltage @ I
OH

4 mA (ref. GND)
accesso-
r
y)
47 kW Pull–up resistor in phone
ry)
220 kW Pull–down resistor in acces-
sory
47 100 W Serial (EMI filtering) resistor
in phone
150 pF Cable capacitance
1 ms Rise/Fall time
12 Yes FBUS
RX
Serial
dt i
0 0.8 V Input low voltage (ref. GND)
_RX data in
(from ac
-
2.0 2.8 V Input high voltage (ref. GND)
(from
ac
-
cessory to
h)
220 kW Pull–down resistor in phone
y
phone)
47 kW Pull–up resistor in accessory
2.2 kW Serial (EMI filtering) resistor
in accessory
150 pF Cable capacitance
2 ms Rise/Fall time @ 115kbits/s
1 ms Rise/Fall time @ 230kbits/s
11 Yes MBUS Bidirec-
ti l i
0 0.8 V Input low voltage (ref. GND)
FLAS
tional seri-
al bus
2.0 2.8 V Input high voltage (ref. GND)
FLAS
H_CL
K
al
bus
Flash seri
-
0 0.8 V Output low voltage @ I
OL

4 mA (ref. GND)
K
Flash
seri-
al data
clock
(f
2.1 2.9 V Output high voltage @ I
OH

100 mA (ref. GND)
(from ac-
cessory to
4.7 kW Pull–up resistor in phone
cessory
to
phone)
220 kW Pull–down resistor in acces-
sory
100 W Serial (EMI filtering) resistor
in phone
200 pF Cable capacitance
5 ms Rise/Fall time @ 9600 bits/s