Z0220112VSGR3470 Zilog, Z0220112VSGR3470 Datasheet - Page 48

• Manufacturer Part Number: Z0220112VSGR3470
• Description: IC MODEM 2400BPS DSP AFE 44-PLCC
• Manufacturer: Zilog

Specifications of Z0220112VSGR3470

• Data Format: V.21, V.22, V.23, Bell 103, Bell 212A
• Baud Rates: 2.4k
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 44-LCC (J-Lead)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 20. Modem Data Pump Word Definitions (Continued)
PS000904-0107
Register & Address
(hex)
Default
Value
Function and Explanation
This register represents the upper and lower thresholds of the
received telephone line energy. If Reg5, bit 1 (CDET) to 1, and the
telephone line energy falls below RLSDOffThresh, the data pump
sets Reg5, bit 1 (CDET) to 0. If Reg5, bit 1 (CDET) is 1 and the
telephone line energy rises above RLSDOnThresh the data pump
sets Reg5, bit 1 (CDET) to 1. These thresholds stabilize Reg5, bit 1
(CDET) by hysteresis when RLSDOffThresh is set to a lower value
than RLSDOnThresh. Use the following formula when thresh is
specified in dBm and is less or equal to 0:
The data pump sets this location to its default value at any reset.
Changes in value take effect after the next baud period.
RLSDval
V.22BIS Data Pump with Integrated AFE
=
10
(
power
) 20
⁄
30 32767
(
)
44