Product manual

Table 3.8: OCR Register Bit Definitions
OCR Bit Card Voltage Initial Value
31 Card busy bit
“0”  busy, “1”  ready
30–24 Reserved All “0”s
23 3.6–3.5 1
22 3.5–3.4 1
21 3.4–3.3 1
20 3.3–3.2 1
19 3.2–3.1 1
18 3.1–3.0 1
17 3.0–2.9 1
16 2.9–2.8 1
15 2.8–2.7 1
14 2.7–2.6 0
13 2.6–2.5 0
12 2.5–2.4 0
11 2.4–2.3 0
10 2.3–2.2 0
9 2.2–2.1 0
8 2.1–2.2 0
7 2.0–1.9 0
6 1.9–1.8 0
5 1.8–1.7 0
4 1.7–1.6 0
3–0 Reserved All “0”s
Table 3.9: CID Register Bit Definitions
Field Width Bit Position Description
MID 8 127–120 Manufacturer’s ID
OID 16 119–104 Card OEM
PNM 40 103–64 Product code
PRV 8 63–56 Product revision
PSN 32 55–24 Serial number
— 4 23–20 0
MDT 12 19–8 Manufacturing date
CRC 7 7–1 Checksum
— 1 0 1
124 Chapter 3
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