CS61884-IQZ Cirrus Logic Inc, CS61884-IQZ Datasheet - Page 15

• Manufacturer Part Number: CS61884-IQZ
• Description: IC,PCM TRANSCEIVER,OCTAL,CEPT PCM-30/E-1,QFP,144PIN,PLASTIC
• Manufacturer: Cirrus Logic Inc

Specifications of CS61884-IQZ

• Rohs Compliant: YES

3.4 Cable Select
3.5
DS485F1
Status
SYMBOL
SYMBOL
CBLSEL
LOS0
LOS1
LOS2
LOS3
LOS4
LOS5
LOS6
LOS7
LQFP
LQFP
106
140
113
93
42
35
75
68
3
FBGA
FBGA
G13
K12
E12
K11
E11
K4
K3
E3
E4
TYPE
TYPE
O
O
O
O
O
O
O
O
I
Cable Impedance Select
Host Mode - The input voltage to this pin does not effect
normal operation.
Hardware Mode - This pin is used in combination with the
LEN control pins (Refer to
Length Configuration Selection,” on page
impedance for all eight receivers and transmitters. This pin
also selects whether or not all eight receivers use an inter-
nal or external line matching network (Refer to the Table
below for proper settings).
NOTE: Refer to
Loss of Signal Output
The LOS output pins can be configured to indicate a loss of
signal (LOS) state that is compliant to either T1.231, ITU
G.775 or ETSI 300 233. These pins are asserted “High” to
indicate LOS. The LOS output returns low when an input
signal is present for the time period dictated by the associ-
ated specification (Refer to
Section 10.5 on page 27)).
E1/T1/J1
T1/J1
T1/J1
T1/J1
E1
E1
E1
page 52
ponents. All transmitters use internal matching net-
works.
Table 3. Cable Impedance Selection
No Connect
No Connect
CBLSEL
HIGH
HIGH
LOW
LOW
for appropriate external line matching com-
Figure 17 on page 51
DESCRIPTION
DESCRIPTION
Table 5, “Hardware Mode Line
100 Ω Internal
100 Ω Internal
100 Ω Internal
120 Ω Internal
Transmitters
75 Ω Internal
75 Ω Internal
Loss-of-Signal (LOS)
25) to set the line
and
Inter or Ext
Receivers
CS61884
Figure 18 on
External
External
Internal
Internal
Internal
(See
15